The Mini Electric (marketed as the Mini Cooper SE in all markets outside the United Kingdom) is a battery electric version of the third generation Mini Hatch that was launched in 2020 by German automaker BMW under the Mini marque. The drivetrain utilises technology developed for the earlier BMW i3.

The traction motor has an output of 135 kW (181 hp) and 270 N⋅m (199 lb⋅ft) of torque, drawing from a 32.6 kWh battery, of which 28.9 kWh are usable. The battery uses twelve packs of lithium-ion cells arranged in a T-shape between the front seats and below the rear seats. It has an EPA rated range of 110 mi (180 km) on a single charge, with a 36-minute fast charging time to 80% capacity using a 50 kW DC fast charger. According to the WLTP test cycle, the car has a range of 225 to 234 km (140 to 145 mi).

Compared to the Mini E, a limited production battery-electric vehicle leased by Mini to a few hundred customers in the United States in 2008, the acceleration, power, and range were nearly the same, but the battery in the newer Mini Electric takes up less passenger volume; the battery of the Mini E occupied the entire rear seat and cargo area.

The chassis position of the battery shifts the weight balance from 63/37 (front/rear) for a Cooper S with an internal combustion engine to 58/42 or 54/46 (F/R) for a Cooper SE; in addition, the center of gravity is 30 mm (1.2 in) lower for the SE, despite an increase in ride height by 18 mm (0.71 in). The chassis was fitted with unique dampers; springs were borrowed from the Countryman and Clubman models to accommodate the extra weight of the battery, which increased weight by 129 to 159 kg (284 to 350 lb) compared to a base Cooper.

The top speed of the Mini Electric is limited to 150 km/h (93 mph). The Mini Electric has a luggage capacity ranging between 211 and 731 litres, depending on how many seats are used.

Because the car does not require a radiator, the grille is closed; additional tweaks to the undercarriage and rear apron were made to reduce aerodynamic drag. Certain badges and trim of the Mini Electric are finished in a bright "Energetic Yellow" colour, which may be specified in grey instead. Inside the car, the digital instrument display, shifter, and starter button are highlighted with the same yellow colour. The charging inlet is located behind the fuel filler door and is regionalised: Type 2/CCS Combo 2 in Europe and Type 1/CCS Combo 1 in North America.

One of the model-specific wheel options, initially branded "Corona Spoke", has a three-hole asymmetric design reminiscent of three-pin BS 1363 household mains sockets in the United Kingdom; the name was updated to "Power Spoke" shortly after the COVID-19 pandemic began. The Mini Electric continues to use the round stylised "E"/plug logo first developed for the Mini E and continued on the Countryman Cooper S E Hybrid.

A facelifted version of the Mini Cooper was unveiled in 2021, reducing the use of bright yellow trim and badges.