With a design inspired by past models such as the BMW 507, the Z4 is a rear-drive, four-season roadster, thanks to its power retractable hard top that can be raised or lowered while driving at up to 40 km/h. It's powered by turbocharged four- and six-cylinder engines teamed with a seven-speed dual-clutch transmission, with power ranging from 241 to 335 hp, and can also be equipped with an optional Adaptive M Suspension for enhanced handling characteristics.