Holden Commodore (ZB)

The Holden Commodore (ZB) is a full-size car manufactured by Opel for General Motors' Holden division from 2018 to 2020. It is the fifth and final generation of the Holden Commodore range. It was a re-engineered and overhauled version of the Insignia, co-developed between 2012 and 2017.

The ZB Commodore was Holden's first and only imported model to be sold under the Commodore nameplate. The range included the five-door liftback and five-door station wagon bodystyles.

Holden previously sold the first generation Insignia under the Opel brand (Opel Insignia) in 2012 and 2013, as well as under the Holden brand (Holden Insignia) from 2015 to 2017. It was the first Holden Commodore model to be manufactured outside of Australia, following the closure of Holden's Australian car manufacturing facilities at Elizabeth and Fishermans Bend on Friday, 20 October 2017.

It was the first Commodore in thirty years to come with a four-cylinder engine as standard, and controversially, the first in its forty year production not to have a V8 powertrain option. GM made the decision to discontinue Australian manufacturing of the Holden Commodore due to falling sales and losses.

The ZB Commodore proved to be unpopular in Australia resulting in cuts to the production schedule and the lowest unit sales per month on record since the original VB Commodore was released in 1978. November 2019 was the lowest month recorded with only 309 Commodores sold.

The ZB Commodore, and the Commodore nameplate, were discontinued at the end of 2020 due to low sales. Two months later, The Holden brand would be retired altogether by 2021.

The Development for the ZB Commodore started in 2012, with both Holden and Opel working alongside each other, designing and developing the next generation Insignia, with Holden catering it to Australian conditions.

The ZB Commodore is different from the Z18 Insignia that it is based on in its more direct and responsive Australian-specific steering, suspension and exhaust tuning, its driving dynamics and how the car feels to drive. The 3.6-litre LGX V6 engine was also not available in either the Opel or Vauxhall Insignia. The chassis was re-worked and the VXR variant's sound symposer was also completely changed by Bose engineers.