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Opel Senator
A first generation Opel Senator
Overview
ManufacturerOpel (General Motors)
Production1978–1993
Body and chassis
ClassExecutive car (E-segment)
Chronology
PredecessorOpel Kapitän/Admiral/Diplomat
Vauxhall Ventora
SuccessorOpel Omega B

The Opel Senator is a full-size executive car (E-segment) produced by the German automaker Opel, two generations of which were sold in Europe from 1978 until 1993. A saloon, its first incarnation was also available with a fastback coupé body as the Opel Monza and Vauxhall Royale Coupé.[1] The Senator was, for its entire existence, the flagship saloon model for both Opel and Vauxhall.

Through the international divisions of General Motors, it was also known in various markets as the Chevrolet Senator, Daewoo Imperial (in South Korea),[2] Vauxhall Royale (until 1983) and Vauxhall Senator (which took the place of the Royale on Vauxhall models when the Opel brand was phased out from 1983).[3] It was also sold as the Opel Kikinda in Yugoslavia, where it was produced under licence by IDA-Opel in Kikinda, Serbia, after which it was named.[4]

The original Senator was a de facto replacement for Opel's KAD cars (the Opel Kapitän, Admiral and Diplomat), which competed in the F-segment (full-size luxury) in which the KAD cars had sold poorly. Sister company Vauxhall had already abandoned the segment with the demise of its Cresta/Viscount models some years earlier, leaving the Ventora model (a luxury derivative of the FE Victor/VX4) as its flagship offering but this was axed in 1976 with no direct replacement.

The Senator shared its platform with the smaller Opel Rekord, the latter being lengthened to make the Senator. The second generation of that car, from 1987, shared its base with the Rekord's Opel Omega successor, which was again lengthened to produce the Senator.

Senator A (1978–1986)

[edit]
Senator A
Overview
Also called
  • Chevrolet Senator (South Africa)
  • Opel Kikinda (Yugoslavia)
  • Vauxhall Royale (UK, until 1983)
  • Vauxhall Senator (UK, from 1984)
Production1978–1986
Assembly
Body and chassis
ClassExecutive car (E-segment)
Body style4-door saloon/sedan
LayoutFR layout
PlatformV platform (RWD)
Related
Powertrain
Engine
Dimensions
Wheelbase2,685 mm (105.7 in)
Length4,810 mm (189.4 in)
Width1,722 mm (67.8 in)
Height1,415 mm (55.7 in)
Curb weight1,335–1,450 kg (2,943–3,197 lb)

The Senator A was last part of a joint model programme executed by GM in the 1970s to develop a common series of vehicle platforms for both its European brands (and also for the Holden brand in Australia). The first two product families of this strategy – the T-Car (Kadett C/Chevette) and the U-Car (Ascona B/Manta B/Cavalier) had already been released. The V-Car (or V78) platform would simultaneously provide the next-generation Opel Rekord, a replacement for the Vauxhall FE Victor, and a 'stretch' version to replace the unsuccessful 'KAD' cars, and act as a flagship for both Opel and Vauxhall.

The Senator therefore emerged as a long wheelbase version of the Opel Rekord E, complemented by a three-door fastback coupé version on the same platform called the Opel Monza, which was intended as a successor for the Opel Commodore coupé.

Names and markets

[edit]

The Senator A and Monza were initially sold in the United Kingdom as the Vauxhall Royale (and Vauxhall Royale Coupé). Unlike other members of the joint Opel/Vauxhall model programme of the period, the Royale was simply a badge engineered version of the Senator with only detail differences from its Opel sister.

Following the merger of the UK Opel and Vauxhall dealer networks in 1982, the Opel marque was repositioned as a performance-luxury brand, and the Vauxhall Royale models were dropped in favour of the Opel Senator/Monza, coinciding with the "A2" mid-cycle facelift. This policy was reversed in late 1984, with the Senator reverting to Vauxhall branding for the 1985 model year, but the Monza remained on sale as an Opel until its discontinuation at the end of 1987.

The vehicle was also available in South Africa as the Chevrolet Senator until 1982, when it was rebadged as an Opel. It filled the gap left by the Holden based Chevrolet Caprice Classic, which was sold there from 1975 to 1978.[5] The Chevrolet Senator was fitted with a locally built version of Chevrolet's 250 inline-six (4,093 cc), with 132 PS (97 kW).[6] The post-1982 South African Opel Senator received Australian-built, six-cylinder engines. In Serbia, the locally assembled Senator received the 2.5-litre six and was badged the "Opel Kikinda".[4]

The Senator and Rekord E were used as the base vehicle from which the Holden Commodore was developed for the Australian and New Zealand markets. The later VK Commodore was a hybrid between the two Opel cars, featuring the Senator's six-light glasshouse grafted onto the Rekord E derived shell. The Daewoo Royale did the reverse, utilizing the Opel Rekord E2 glasshouse combined with the Senator front, except for the Daewoo Royale Salon Super, which used the Senator bodyshell in its entirety (albeit with different taillights). Later models were heavily facelifted, modernizing their appearance and masking their Senator origins.

  • Opel Senator A1 rear (1978–1982)
    Opel Senator A1 rear
    (1978–1982)
  • Vauxhall Royale saloon
    Vauxhall Royale saloon

Engines

[edit]

The engine range for the first phase of the model's life included the 2.8S and the newly developed 3.0E, which had 180 PS (132 kW; 178 hp) and 248 N⋅m (183 lb⋅ft) with fuel injection. The three-speed automatic transmission was Opel's own design introduced in 1969, and was manufactured in Opel's transmission plant in Strasbourg, it was modified to cope with the new and improved power outputs.

Opel's own four speed manual transmission was not up to the job and they turned to transmission producer Getrag, who installed their 264 four speed manual gearbox in the early four cylinder Monzas. This was replaced by the five speed 240 for the 2.5 and 2.8 engines, and the 265 gearbox for the 3.0E.

The straight-six engines were all of the Opel cam-in-head engine design, as used in the earlier Commodore models and originating from the 1.7 and 1.9-litre straight four engines first used in the 1966 Kadett and Rekord. Opel would stick with the CIH engine design up until the 2.4 Frontera in 1993.

With the 3.0 litre engine, the Monza was the fastest car Opel had built, capable of 215 km/h (134 mph), and 0–100 km/h (0–62 mph) in 8.5 seconds. In June 1981, the fuel injected 2.5E engine also used in the smaller Commodore was added to the Senator/Monza lineup.[7] With 136 PS (100 kW) it was very close to the now irrelevant 2.8 and its 140 PS (100 kW), and the 2.8S was discontinued in 1982.

Facelift (A2)

[edit]

The original Senator and Monza were facelifted in November 1982, although the Senator "A2" (as it is usually called) only went on sale in March 1983. In the United Kingdom, it was initially sold only as an Opel, before being rebadged as a Vauxhall in 1984. The A2 Monza was only sold as an Opel.

The facelifted car looked similar to its predecessor, with relatively minor changes: smoothed-off headlights increased in size, and chrome parts were changed to a matt black or colour coded finish. The car was much more slippery, with drag resistance down (from 0.45 to 0.36 ).[8] The top of the range 3.0E received upgraded Bosch LE-Jetronic fuel injection.

Interiors were improved with an altered dashboard and the new instrument pack with larger dials used in the Rekord E2, and engines changed. Now, the fuel-injected straight-four 110 PS (81 kW) two-liter cam-in-head unit from the Rekord E2 was available, although with little fanfare; this and the 2.5 essentially replaced the Commodore which was itself quietly retired in 1982. Power of the 2.0 was soon increased to 115 PS (85 kW). In March 1983 a 2.3-litre turbodiesel (shared with the Rekord) became available, and a few months later ABS-brakes (hitherto only available for the Senator CD) became an available option across the entire Senator/Monza range.[8] At the Paris Show in September 1984 the 2.5E was given a new LE-Jetronic Bosch fuel injection system; power inched up to 140 PS (100 kW). The 2.0E was replaced by the torquier 2.2E, still with the same max power. Only the 3.0E engine remained untouched, although its name was changed to 3.0i.[8] On the transmission side, the Strasbourg-built THM180 three-speed automatic was replaced by a four-speed unit. For the 1985 model year, the digital instrument display introduced in the Kadett E was available on the top models, although buyers could opt for the conventional analogue dials as a delete option. The trim surrounding the windows was more blacked out than before as well, although ample chrome remained.[9] the four-cylinder models were never sold in Vauxhall form in the United Kingdom.

  • Opel Senator A2 (1982–1986)
    Opel Senator A2 (1982–1986)
  • Opel Senator A2 (rear)
    Opel Senator A2 (rear)
  • Vauxhall Senator (A2)
    Vauxhall Senator (A2)

Shortly thereafter, in November 1984 a supercharged version (Comprex) was shown – at the time, the only production car in the world to use this technique. Going on sale in 1985, this very rare experimental version (1,000 units planned) were officially built by Irmscher rather than Opel.[10] The Comprex offered 95 PS (70 kW) and a 172 km/h (107 mph) top speed, and acceleration figures showed a twelve percent improvement over the turbodiesel.[11] Like the other Rekord and Senator diesels it had a pronounced bulge in the bonnet. The Comprex offered marginally higher power than the turbodiesel, but more importantly, 90 percent of the maximum torque was available from 1300 rpm.[11] From September 1985 until the end of production in the end of summer 1986, a catalyzed version of the 3.0E was available, with power down to 156 PS (115 kW).

Variants

[edit]

A four-wheel drive conversion was also available, engineered by Ferguson, who had previously provided similar modifications for the Jensen FF. Rather expensive, this could also be retrofitted to an existing car.[12] The system uses a viscous coupling to distribute power with a 60/40 rearward bias, to improve traction while maintaining the Senator's handling characteristics.[13] These were used by British Forces Germany under the BRIXMIS (British Commanders' in Chief Mission to the Soviet Forces in Germany) operations for the collection of technical intelligence. The same kit was also used by Bitter Cars for a four-wheel-drive version of their SC coupé, beginning in the end of 1981.[12]

A limited edition convertible edition was also available in Germany, where the company "Keinath" reinforced the car heavily, and this added to the all round weight to the car.

Senator B (1987–1993)

[edit]
Senator B
Overview
Also calledVauxhall Senator
Production1987–1993
AssemblyGermany: Rüsselsheim
Body and chassis
ClassExecutive car (E-segment)
Body style4-door saloon/sedan
LayoutFR layout
PlatformV platform (RWD)
RelatedHolden Commodore (VN)
Powertrain
Engine
Transmission4-speed automatic
5-speed manual
Dimensions
Wheelbase2,730 mm (107.5 in)
Length4,845 mm (190.7 in)
Width1,785 mm (70.3 in)
Height1,455 mm (57.3 in)
Curb weight1,450–1,650 kg (3,197–3,638 lb)

A new model, the Senator B (marketed without the "B" suffix), arrived in the spring of 1987, a longer-bodied version of the Opel Omega. There was no Monza equivalent.

Opel Senator B rear
Vauxhall Senator B
A Thames Valley Police Vauxhall Senator B

There were various versions of the Senator B: twelve valve 2.5 L and 3.0 L sized engines were released in 1987 along with a luxury "CD" model with the 3.0 L engine. The CD version boasted Electronic adjustable suspension, "ERC", for the first time in a mass-produced European car, air conditioning, heated seats also in the back, genuine walnut panels, leather covered centre console, trip computer and cruise control.

The cars were available with either five speed manual or four speed automatic gearboxes. A digitally controlled 4-speed automatic from Aisin-Warner equipped with three different switching programs Sport, Economy and Winter. It was also equipped with torque delay at each shift, called "torque retard", for not notable gear changes. In winter mode the car starts on the third gear and switches immediately to fourth as soon as possible to prevent spinning wheels and instability. This mode remains to the speed of 80 km/h and then automatically switches off. The gearbox also had built-in diagnostic system and emergency program. Later Lexus and Volvo used similar versions of this transmission. As a luxury car, there were many options, but much was also standard. Options included leather seats, heated seats both front and rear, and electronic air conditioning including refrigerator in the glove box.

LCD instrumentation was also an option. Digital electronic power steering ZF-Servotronic, the same as in the BMW 7 Series, was standard, as was a new front axle design which allowed the axle to slide under the car in a crash and thus increasing the length of the deformation zone and prevent deformation of the footwell. The 3.0 24V was equipped with BBS styled multispoke alloy wheels made by Ronal.

A 24-valve version of the 3.0-litre six was introduced in 1989, generating 204 PS (150 kW; 201 hp) – compared with 177 PS (130 kW; 175 hp) for the older twelve valve version. This model was very popular with police forces in the United Kingdom, with several cars being supplied to multiple forces with upgraded police specification for traffic policing service, with the notable exception of the Metropolitan Police.[14] The main feature of the new engine was a "Dual Ram" system, increasing torque at low engine speeds by means of a redirected air flow system which engages at 4,000 rpm. The engine in police service was capable of a speed of up to 140 miles per hour (230 km/h), although the bonnet was prone to rippling at such high speeds.[14]

Opel tuners Irmscher introduced a 4-litre version of the Senator and it went on sale in Germany only in late 1990. Power increased to 272 PS (200 kW), it was equipped with a body kit and alloy wheels, while the car's interior benefitted from buffalo hide, added wood panels, and lots of power equipment.[15] For 1990 the 2.5 L was replaced by a 2.6 L Dual Ram. The twelve-valve, 3-litre version was deleted from the range in 1992. CD versions of the 2.6 L (UK market only), and a 24 valve 3.0 L were available up to the model's withdrawal in 1993.

With the second generation Omega presented at the end of 1993 and available for sale from March 1994,[16] Opel considered themselves sufficiently represented in the upper end of the market by the top specification Omega B. Production of the Opel Senator B ended in the autumn of 1993 with only 69,943 cars produced since the car's launch six and a half years earlier. Annual production had slumped from 14,007 in 1990 to 5,952 in 1992, with only 2,688 cars produced in 1993.[16] Following the announcement of the discontinuation of the Senator, the government of the United Kingdom would order a final batch of around 200 Vauxhall Senators in 1993 for diplomatic and policing use prior to moving over to the Vauxhall Omega, and on some police forces they entered service a year or more later with M plate registrations.[14]

Technical data of Opel Senator B (1987–1993)
Opel Senator 2.5 i 25NE 2.6 i C26NE 3.0 i C30NE 3.0 i C30SE Irmscher
4.0 i C40SE
Engine: Inline-six, SOHC, 12V Inline-six, DOHC, 24V
Displacement: 2490 cc 2594 cc 2969 cc 3983 cc
bore x Stroke:  87 x 69.8 mm 88.8 x 69.8 mm 95 x 69.8 mm 98 x 88 mm
Max power/rpm: 140 PS (103 kW) at 5200 150 PS (110 kW) at 5600 156 PS (115 kW) at 5400
177 PS (130 kW) at 5800		 204 PS (150 kW) at 6000 272 PS (200 kW) at 5800
Max torque/rpm:   201 N⋅m (148 lb⋅ft) at 4000 216 N⋅m (159 lb⋅ft) at 3600 200 N⋅m (148 lb⋅ft) at 3900
235 N⋅m (173 lb⋅ft) at 4400		 265 N⋅m (195 lb⋅ft) at 3600 387 N⋅m (285 lb⋅ft) at 3300
Fuel System:  Electronic multipoint injection
(Bosch LE-Jetronic) 		Digitally controlled multipoint injection (Bosch Motronic)
Cooling:  water
Transmission:  4-speed automatic,
5-speed manual		 5-speed manual
Brakes:  Front: ventilated disc brakes Ø 280 mm, rear: ventilated disc brakes Ø 270 mm Front: ventilated disc brakes Ø 296 mm, rear: disc brakes Ø 270 mm
Body structure:  Sheet steel, unibody construction
Track front/rear:  1,462 mm (57.6 in)/1,484 mm (58.4 in)
Wheelbase:  2,730 mm (107.5 in)
Length:  4,845 mm (190.7 in)
Dry weight:  1,450–1,650 kg (3,195–3,640 lb)
Top speed:  210 km/h (130 mph) 215 km/h (134 mph) 225 km/h (140 mph) 240 km/h (149 mph) 255 km/h (158 mph)
0–100 km/h
(0–62 mph):  		10.5 s 9.8 s 9.0 s 7.8 s 6.5 s

References

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Opel Senator

View on Grokipedia
from Grokipedia
The Opel Senator is a full-size executive sedan produced by the German automaker from 1978 to 1993 across two generations, positioned as the brand's flagship luxury vehicle and replacing earlier models such as the Kapitän, , and . Designed for superior performance, safety, and comfort, it featured advanced engineering like and , targeting the premium market in . The first-generation Senator A, launched in mid-1978 as an upscale variant of the Rekord E platform, offered a 3.0-liter inline-six with Bosch L-Jetronic delivering 180 DIN horsepower at 5,800 rpm, enabling a top speed of 130 mph (210 km/h) and 0-60 mph acceleration in 10.5 seconds. Measuring 190.1 inches in length, 68.0 inches in width, and 55.7 inches in height, it incorporated front suspension and a semi-trailing arm rear setup with coil springs for refined handling, while weighing approximately 350 pounds less than comparable models despite enhanced sound deadening. It competed directly with rivals like the , , , and , often praised in period tests for outperforming lower-powered versions of the Mercedes S-Class and in acceleration and efficiency. The second-generation Senator B, introduced in early 1987 on the new , expanded the lineup with updated styling, improved , and a range of inline-six engines from 2.6 liters (148 hp) to 3.0 liters (up to 204 hp standard, or 268 hp in the tuned variant), achieving top speeds of 132–159 mph and 0-62 mph times as quick as 6.2 seconds. Weighing 3,120–3,510 pounds with and options for , it emphasized practicality with 18.7 cubic feet of space and a towing capacity up to 3,748 pounds when braked, while maintaining fuel economy around 20–23 . Beyond its commercial role, the Senator gained notoriety for applications, including customized all-wheel-drive versions used by British teams in Cold War-era surveillance missions behind the , valued for their durability and ability to evade pursuers. Production ceased in 1993, with the model influencing subsequent designs like the and badge-engineered variants such as the in the UK.

Overview

History and development

The Opel Senator was conceived in the mid-1970s as a successor to the , aiming to bridge the gap between the mid-size Rekord and full-size luxury sedans in Opel's lineup. This positioning reflected ' strategy to revitalize Opel's segment under its European , with engineering primarily led by Opel's Rüsselsheim team while adhering to GM's global platform directives. The first-generation Senator A was developed on a lengthened version of the Rekord E platform, incorporating shared components to streamline production and reduce costs across the mid- to upper-market range. The Senator A debuted as a concept at the 1977 International Motor Show (IAA) in , showcasing Opel's ambitions for a modern executive saloon with improved aerodynamics and interior refinement. Following extensive prototype testing and validation phases at Opel's facilities, full-scale production commenced in spring 1978 at the Rüsselsheim plant in , marking the start of a model run that emphasized durability and comfort for European business users. Production of the Senator A continued until the end of summer 1986, after which it was phased out to make way for the next iteration. In the mid-1980s, Opel initiated development of the second-generation Senator B to modernize its flagship offerings amid evolving market demands for and . This model was engineered in parallel with the A, utilizing an extended variant of the same platform to leverage shared engineering resources and accelerate time-to-market. Initial prototypes underwent rigorous testing for ride quality and handling, incorporating data from the Omega project to refine the Senator's larger body. The Senator B launched in spring , succeeding the A and representing Opel's final dedicated executive sedan before the Omega's expansion into that role.

Role and market positioning

The Opel Senator was positioned as the flagship executive sedan in Opel's lineup, targeting the market primarily for business professionals and fleet buyers who prioritized spacious comfort and refined ride quality over outright sportiness. It served as an upscale alternative to the more mainstream , offering enhanced luxury features at a designed to undercut established premium competitors such as the , (predecessor W123), and , while appealing to buyers seeking value without sacrificing executive credentials. The name "Senator" was chosen to evoke prestige and authority, drawing on connotations of high social standing and in German culture, aligning with the car's aspirational role for upwardly mobile professionals. Sales were concentrated in , where the Senator became a staple for corporate and government fleets, but it also saw targeted exports to select markets. In the , right-hand-drive versions were marketed under the badge as the Royale for the first generation and Senator for the second, capitalizing on national preferences for British-badged vehicles while sharing Opel's engineering. Limited availability extended to through , where the Senator's platform influenced local models like the Commodore but direct imports remained minimal due to strong domestic production preferences. No versions were imported to the , reflecting ' strategy to avoid direct competition with its own and luxury lines in that market. The first-generation Senator (A), launched in 1978, established Opel in the executive segment as a cost-effective luxury option, providing Mercedes-like refinement at Ford Granada-level pricing to attract budget-conscious fleet operators. The second generation (B), introduced in 1987, refined this positioning further, elevating build quality and features to better challenge emerging Japanese rivals like the , while maintaining 's emphasis on accessible European sophistication for international business users.

First generation (1978–1986)

Design and chassis

The first-generation Opel Senator, known as the Senator A, was introduced in mid-1978 as an upscale executive sedan based on a lengthened version of the E platform. It measured 4,810 mm in length, 1,730 mm in width, 1,415 mm in height, and had a of 2,685 mm, providing a spacious interior for five passengers while maintaining a curb weight of approximately 1,420–1,500 kg depending on equipment. The unibody construction used high-strength sheet steel for rigidity, contributing to a of around 0.45 in its initial form, with layout emphasizing balanced handling and comfort. Designed under Opel's styling team, the exterior featured a traditional three-box sedan shape with prominent chrome accents, rectangular headlights, and a formal grille that conveyed luxury and presence, aligned with late-1970s European trends. The body included extensive brightwork on bumpers, side trim, and window surrounds, with options for alloy wheels to enhance its premium appeal. were moderate for the era, prioritizing visual elegance over extreme efficiency. The interior offered a refined environment with or optional , power-adjustable front seats in higher trims, and standard features like a tilt-adjustable and ample sound deadening for quiet operation. The featured analog gauges and optional automatic climate control in the CD variant, while the trunk provided 510 liters of capacity. Rear legroom was generous, suitable for executive transport. The employed independent front suspension with coil springs for precise and a semi-trailing arm rear setup with coil springs and a for stability, differing from the Rekord's live rear . This configuration delivered a compliant ride for long-distance travel, with providing moderate feedback. Braking used front disc and rear setup standard, with power assistance. Safety included a reinforced passenger compartment, though ABS was not available until .

Engines and transmission

The first-generation Opel Senator A was primarily powered by inline-six petrol engines, with from launch to meet performance expectations in the executive segment. Diesel options were introduced later in the facelift for efficiency-focused markets. All engines were paired with . Initial powertrain was a 3.0-liter inline-six (2968 cc) with Bosch L-Jetronic electronic , producing 180 PS (132 kW; 178 hp) at 5,800 rpm and 248 N⋅m (183 lb⋅ft) of torque at 4,200 rpm. From 1982, a 2.5-liter inline-six (2490 cc) with similar injection offered 150 PS (110 kW; 148 hp) at 5,400 rpm and 215 N⋅m (158 lb⋅ft) at 4,200 rpm. In 1983, a 2.3-liter Isuzu-sourced (2258 cc) provided 86 PS (63 kW; 85 hp) at 4,300 rpm and 196 N⋅m (145 lb⋅ft) at 2,200 rpm, or 95 PS (70 kW; 94 hp) with optional Comprex pressure-wave . The 3.0-liter was updated to 177 PS (130 kW; 175 hp) in later models with catalytic converters. An optional Ferguson four-wheel-drive was available on select petrol variants for improved traction. Transmission choices included a four-speed manual for engaging driving or a three-speed automatic (ZF) for relaxed cruising, with the automatic popular in luxury trims. Fuel economy varied: the 3.0-liter achieved around 11–13 L/100 km combined, while the diesel improved to 8–9 L/100 km. Performance focused on smooth acceleration and highway stability, with the 3.0-liter reaching 0–100 km/h in 9.5 seconds and a top speed of 215 km/h. models from 1984 complied with early emissions standards.
EngineDisplacementPowerTorque0-100 km/hTop Speed
3.0 L I6 (L-Jetronic)2,968 cc180 PS @ 5,800 rpm248 N⋅m @ 4,200 rpm9.5 s215 km/h
2.5 L I6 (LE-Jetronic)2,490 cc150 PS @ 5,400 rpm215 N⋅m @ 4,200 rpm10.5 s205 km/h
2.3 L TD I4 ()2,258 cc86 PS @ 4,300 rpm196 N⋅m @ 2,200 rpm15 s170 km/h
2.3 L TD Comprex I42,258 cc95 PS @ 4,300 rpm205 N⋅m @ 2,200 rpm14 s175 km/h

1982 facelift

The 1982 facelift, often referred to as the Senator A2, represented a mid-cycle refresh for the first-generation Opel Senator, introduced in late 1982 and going on sale in March 1983. This update aimed to modernize the model's appearance and improve while retaining the core platform from the original 1978 design. The changes were relatively conservative, focusing on styling revisions and minor enhancements to address evolving market expectations for executive cars without necessitating a full redesign. Exterior modifications were centered on the front and rear fascias to achieve a sleeker profile. The headlights were enlarged and repositioned slightly outward, paired with a revised grille that aligned more closely with them for a cohesive look. At the rear, new taillights were integrated across the panel using light strips, and the license plate recess was lowered into the bumper. Additional refinements included the removal of chrome trim in favor of matt black accents, integrated bumpers, and flush-fitting door handles, which contributed to an improved from 0.45 to 0.36. New wheel designs were also introduced, enhancing the overall aesthetic without altering the body's fundamental proportions. Interior updates emphasized comfort and functionality through subtle refinements. The was redesigned with an integrated center stack and instrument cluster, maintaining a squared-off shape consistent with contemporary styling. Sound insulation was improved for a quieter cabin, and options such as electrically adjustable side mirrors became available. While no major structural changes occurred, these tweaks elevated the perceived luxury, aligning with the Senator's positioning as a refined executive sedan. Mechanically, the facelift introduced enhancements to broaden the options and refine handling. A fuel-injected 2.5-liter inline-six became available, offering 140 horsepower, alongside the existing 3.0-liter variant. Notably, a 2.3-liter sourced from was added in 1983, providing 86 horsepower in standard form or 95 horsepower with Comprex supercharging, marking Opel's first diesel offering for the Senator and appealing to fuel-conscious buyers. Suspension tuning was adjusted for better ride comfort, and the was revised for more responsive feel. Transmissions remained a standard four-speed manual or optional three-speed automatic for models. The A2 facelift was produced from 1982 to 1986, extending the first-generation Senator's lifecycle until the all-new B-series arrived. These updates helped mitigate some early criticisms of the A1 model's styling and efficiency, contributing to sustained interest in the executive segment by offering a more contemporary package.

Body styles and variants

The first-generation Opel Senator A was offered exclusively as a four-door sedan, serving as Opel's flagship executive model without additional body configurations like (the related coupe was marketed separately as the ). It came in two main trim levels: the base Senator E with standard features including and basic upholstery, and the luxury-oriented CD variant, which included seats, trim accents, enhanced , and optional for select markets. The CD trim emphasized comfort with features like central locking and improved instrumentation. Special variants included diesel models post-1982 for better fuel economy, and limited four-wheel-drive versions using Ferguson for adverse weather conditions. In export markets, such as the , it was sold as the Senator, sharing the sedan body and powertrains adapted for local needs. The Senator A also served as the base for the Bitter SC coupe, a low-volume luxury variant produced by Bitter. No high-performance Irmscher tuning was offered for this generation. Production focused on the sedan form, with approximately 47,000 units built for the Senator A, highlighting its niche role before the Omega-based successor.

Second generation (1987–1993)

Design and chassis

The second-generation Opel Senator, known as the Senator B, featured a more streamlined and aerodynamic body design compared to its predecessor, with an overall length of 4,845 mm, a wheelbase of 2,730 mm, and a curb weight ranging from approximately 1,435 to 1,550 kg depending on the engine and trim. This configuration provided a spacious executive sedan footprint while improving fuel efficiency through enhanced aerodynamics, achieving a drag coefficient (Cd) of 0.31. The unibody construction utilized sheet steel for rigidity and weight savings, contributing to better handling and ride quality on the rear-wheel-drive layout. Under the direction of Opel's design chief , the exterior adopted sleeker, rounded lines that reflected late-1980s trends toward modernity and reduced drag, including a higher beltline for a more upright and premium appearance, integrated rear spoilers for stability, and flush-mounted glass to minimize turbulence. The front incorporated aerodynamic bumpers and rectangular fixed headlights, while the overall form emphasized smooth contours over the boxier styling of earlier models, enhancing visual elegance without compromising the car's imposing presence. Inside, the Senator B offered a refined cabin with options for or , power-adjustable front seats in higher trims for enhanced comfort on long journeys, and standard automatic climate control in the top CD variant to maintain a quiet, controlled environment. isolation was improved through additional materials in the body and doors, creating a serene experience, while the trunk provided 530 liters of capacity for luggage, expandable to 930 liters with folded rear seats in some configurations. The chassis was based on the Omega A platform, retaining for balanced dynamics and superior traction in varied conditions, with a multi-link independent front suspension using MacPherson struts for precise response and a semi-independent rear setup featuring trailing arms and a to ensure stability and reduce axle movement during cornering. This mechanical structure prioritized a compliant ride suitable for executive use, with reinforced mounting points for durability. Safety features advanced with the inclusion of (ABS) as standard from 1988, helping to prevent wheel lockup during emergency stops, alongside a reinforced body structure and early integration of side impact beams in the doors to absorb energy in collisions, marking Opel's commitment to occupant protection in the executive segment.

Engines and transmission

The second-generation Opel Senator B was powered exclusively by petrol engines, reflecting its positioning in the segment where refinement and smooth performance were prioritized over diesel efficiency. No diesel options were offered, as the focus remained on gasoline powertrains suited for high-speed touring and comfort. The lineup included inline-six (I6) engines across various displacements, with systems for improved drivability. Key engine variants comprised a 2.5-liter I6 producing 140 PS (103 kW; 138 hp) at 5,400 rpm and 205 N⋅m (151 lb⋅ft) of at 4,200 rpm, a 2.6-liter I6 delivering 150 PS (110 kW; 148 hp) at 5,600 rpm with 215 N⋅m (159 lb⋅ft) at 4,000 rpm, and a base 3.0-liter I6 (12-valve) generating 177 PS (130 kW; 175 hp) at 5,800 rpm alongside 240 N⋅m (177 lb⋅ft) at 4,200 rpm. A more advanced 3.0-liter I6 with 24 valves, introduced in 1989, offered 204 PS (150 kW; 201 hp) at 6,000 rpm and 270 N⋅m (199 lb⋅ft) at 3,600 rpm for enhanced high-rev performance. Tuned versions by included a 3.6-liter I6 (12-valve) producing 197 PS (145 kW; 194 hp) with 280 N⋅m (207 lb⋅ft) at 3,000 rpm, and a 4.0-liter 24-valve I6 producing 272 PS (200 kW; 268 hp), emphasizing power upgrades for discerning buyers. Transmission options included a five-speed manual gearbox for sportier or a four-speed ZF automatic for effortless cruising, with the latter being popular in executive configurations. Fuel economy typically ranged from 9 to 11 L/100 km in combined , depending on the engine and transmission; for instance, the 3.0-liter 24-valve model with achieved about 10.4 L/100 km. Later models incorporated for smoother response and better integration with the chassis's rear-wheel-drive setup. Performance emphasized refined, high-speed stability over outright acceleration, with 0-100 km/h times spanning 7.5 to 12 seconds and top speeds of 200 to 240 km/h across the range—the 2.5-liter variant reaching 210 km/h in 11 seconds, while the 3.0-liter 24-valve hit 235 km/h in 7.8 seconds. This setup provided effortless cruising, aided by the engines' broad bands. Catalytic converters became standard from the late 1980s, with models from 1993 complying with Euro 1 emissions standards through optimized fuel mapping and exhaust systems.
EngineDisplacementPowerTorque0-100 km/hTop Speed
2.5 L I62,490 140 PS @ 5,400 rpm205 N⋅m @ 4,200 rpm11 s210 km/h
2.6 L I62,594 150 PS @ 5,600 rpm215 N⋅m @ 4,000 rpm10 s220 km/h
3.0 L I6 (12V)2,969 177 PS @ 5,800 rpm240 N⋅m @ 4,200 rpm9.5 s225 km/h
3.0 L I6 (24V)2,969 204 PS @ 6,000 rpm270 N⋅m @ 3,600 rpm7.8 s235 km/h
3.6 L I6 ( tune)3,590 197 PS @ 5,200 rpm280 N⋅m @ 3,000 rpm~8 s~230 km/h

Mid-cycle updates

The second-generation Opel Senator B underwent several incremental revisions during its production run to enhance refinement, safety, and market appeal, with changes introduced progressively from 1989 onward. In 1989, the exterior received a revised grille design for improved aesthetics and , paired with body-colored bumpers that replaced earlier black plastic units, contributing to a more premium appearance and slightly better fuel efficiency through reduced drag. The interior was upgraded with real wood trim on the dashboard and door panels in higher trims, along with an enhanced audio system featuring a more powerful and optional compatibility, addressing customer feedback on luxury features. By 1990-1991, mechanical and safety enhancements became standard or optional across the lineup. was made standard on all models, improving ease of handling for urban driving without compromising feedback on the highway. Optional traction control was introduced, utilizing electronic intervention to limit wheel spin on slippery surfaces, while the suspension was retuned with revised shock absorbers and spring rates for sharper handling and reduced body roll. These adjustments responded to reviews highlighting the car's competent but not class-leading dynamics. Electronic features were expanded to boost convenience and reliability, including an on-board computer displaying fuel economy, range, and service intervals, as well as remote central locking via key fob for all doors and the . Early production models had occasional electronic glitches, such as intermittent warnings, which were addressed through software updates and improved wiring harnesses in 1990 revisions. Production processes were optimized at Opel's Rüsselsheim plant with more efficient assembly lines and the use of lighter aluminum components in non-structural areas, resulting in minor weight reductions of around 20-30 kg for better performance and economy. Market-specific adaptations included enhanced rust protection through additional galvanizing on underbody panels and cavity wax injections, implemented in response to owner reports of in humid climates; this improved long-term durability without altering the base design. These updates maintained the Senator B's position as a refined executive sedan while keeping production costs in check ahead of the model's phase-out in 1993.

Body styles and variants

The second-generation Opel Senator B was offered exclusively as a four-door sedan, emphasizing its role as a premium executive vehicle without or other body configurations. It was available in two primary trim levels: the base Senator E, which provided essential features including anti-lock braking and , and the top-tier CD variant, which added luxury appointments such as armchair-style front seats, walnut wood trim, an electronic option, and enhanced sound insulation for a refined cabin experience. Performance-oriented variants included the 3.0-liter 24-valve inline-six producing 204 PS (201 hp), available in select models including police specifications, paired with a self-leveling rear suspension derived from the Senator's for improved dynamics and high-speed stability. Irmscher offered a tuned variant known as the Senator Rocket, featuring a 4.0-liter inline-six upgraded to 272 horsepower, along with lowered suspension and a discreet for enhanced handling and presence. In the , the model was marketed as the Senator B, sharing the same sedan body and trim structure while adapting to local preferences. The Senator B succeeded the first-generation in Opel's armored vehicle lineup, with protected variants produced for diplomatic and security applications, maintaining the model's exclusivity in high-end sedan form. The 24-valve models had relatively low production, underscoring their rarity. Export plans considered rebadging the Senator B for in select markets, though only concepts materialized without full production.

Production and legacy

Sales and production figures

The first-generation Opel Senator (A), produced from 1978 to 1986, achieved total production of 129,644 units at the Rüsselsheim plant in . The related Monza coupe variant recorded 47,008 units over the same timeframe, with all assembly occurring exclusively at Rüsselsheim and no outsourcing to other facilities. The second-generation Senator (B), manufactured from 1987 to 1993, saw lower overall output totaling approximately 70,000 units, reflecting the impact of economic recessions in the late and early on demand. Annual figures declined markedly toward the end of production, from 14,007 units in 1990 to 5,952 in 1992 and just 2,688 in 1993. Sales distribution emphasized core European markets, with roughly 70% allocated to and , about 20% to the under the Vauxhall Senator badge (fewer than 20,000 units total), and minor volumes exported to and . Production challenges for the Senator lineup were exacerbated by intensifying competition within the executive segment and broader economic downturns affecting premium vehicle sales.

Successors and cultural impact

Production of the Opel Senator B ceased in after six years on the market, primarily due to declining sales outside the , where the model had performed relatively well as the Senator. With only around 70,000 units produced for , the Senator struggled to compete in the increasingly crowded segment, leading to consolidate its lineup. The Omega B, launched in the same year, directly replaced the Senator as Opel's unified executive offering, absorbing its luxury positioning while sharing a platform evolution from the Omega A that had underpinned the second-generation Senator. Subsequent models like the Omega A and B continued the Senator's mantle in the , emphasizing refined performance and spacious interiors for business users. Later, the revived Opel's presence in the upper executive market from 2008 onward, incorporating advanced features that echoed the Senator's original aspirations for premium appeal under ' oversight. The Senator gained notable cultural significance during the as a vehicle for British . Modified Opel Senators were used by the British Commanders'-in-Chief Mission to the Soviet Forces in Germany () for surveillance tours in , featuring reinforced suspensions, hidden cameras, and four-wheel-drive conversions to navigate rough terrain and evade Soviet patrols. These unassuming luxury sedans enabled discreet intelligence gathering from the 1980s until the missions' end in 1990, symbolizing understated espionage tools in a era of high-stakes East-West tensions. In popular media, the Senator appeared in various films and TV series, including high-speed pursuits in the installment Tomorrow Never Dies (1997), where it underscored the car's robust engineering in action sequences, and episodes of German crime dramas like Tatort and Der Alte. The Senator's legacy endures among enthusiasts through its potential for aftermarket tuning, particularly the rare 3.0-liter 24-valve V6 variants, which attract modifications for enhanced performance via upgraded exhausts, suspensions, and kits. These models hold growing collector status for their blend of luxury and modifiable platforms, often prized in European circles. The Senator also influenced badge-engineered luxury lines at GM subsidiaries, such as the Vauxhall Senator in the UK and elements of Holden's Commodore series in , which drew from shared platforms to offer executive variants with local adaptations. Historically, the model's discontinuation marked the end of Opel's era of standalone flagship sedans, as GM shifted toward more integrated, platform-shared executive vehicles to streamline global production.

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