The BMW Z4 sDrive35is is the top trim-level of the BMW E89, which is the chassis code for a two-door roadster with a retractable hardtop. It was produced from 2010 to 2016. It is the first Z series BMW to use a 7-speed double-clutch gearbox. The car is powered by a 3.0L twin-turbo I6 (N54B30) producing 335bhp and comes standard with the M Sports Package. The N54B30 engine is also utilised in the BMW 1 Series M Coupé.