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.