Major changes included: The second generation Z4 features revised styling and improved performance over the previous model. Now offered with a retractable hardtop roof, the new Z4 replaces both the coupe and convertible models of the previous generation. Two trim levels are available, the sDrive30i and sDrive35i, each with different engines. A 255-hp 3.0-liter inline-six can be found in the sDrive30i, while a twin-turbocharged 300-hp 3.5-liter inline-six comes in the sDrive35i. A 6-speed manual is standard on both models, while a 6-speed tiptronic automatic is also offered and a 7-speed twin-clutch automated manual transmission is available on the sDrive35i. Addaptive M Sport suspension is also an option, and gives the Z4 a sportier feel.
