The automatic gearbox is standard on both engines: the 2.0-liter turbo I4 in the Z4 sDrive30i and the 3.0-liter turbo I6 in the Z4 M40i. The former produces 255 horsepower and 295 pound-feet of torque, while the latter produces 382 hp and 369 lb-ft of torque. Both versions are equipped with 18-inch wheels as standard, although new 19-inch alternatives are also available.
