Engine

• 2.2 Liter Inline 6
• 2.5 Liter Inline 6 - 141 kW (184 bhp) at 6000 rpm. BMW claims a 7.0 s time to 100 km/h (62 mph) with a manual transmission. It weighs 1,335 kg (2,932 lb) with a manual transmission—30 kg (66 lb) lighter than the 3.0 L version, but still heavier than the 2.5 L Z3’s weight of 1315 kg (2899 lb).
• 3.0 Liter Inline 6 - The 3.0 L, 170 kW (231 bhp) (at 5900 rpm) straight six has a claimed time to 100 km/h (62 mph) of 5.9 s.
• 3.2 Liter Inline 6 - The 3.2 L, 246 kW (330 bhp) at 7900 rpm and (262 lb-ft) of torque at (4900 rpm).

Transmission

• Five-speed manual gearboxes are standard on all models except the 3.0 L and the M Roadster, which has a 6-speed Getrag. 5-speed automatic are available on all cars. The M Roadster shares its 6-speed Getrag 217 manual gearbox with the M3.