The Z4 is a small rear-wheel-drive convertible with seating for two. Now in its third generation, the Z4 wears more refined styling and offers a slick hardtop convertible to broaden its appeal. The Z4 sDrive28i features an inline four cylinder engines rated at 240-bhp mated to six-speed manual and eight speed automatic transmissions. The higher performance sDrive35i model features a turbocharged 3.0L six rated at 300-bhp and offers a 7-speed sequential manual in lieu of standard automatic transmission. The Z4 Roadster is manufactured in the U.S. in South Carolina.

The six speed manual is no longer available on the Z4 sDrive35i.