The Z4 is a small rear-wheel-drive convertible with seating for two. While its predecessor featured classic roadster styling, the Z4 strikes off in a more avant-garde direction that is sure to polarize. The styling is so bold that the side profile even features a large Z amongst the creases. Like the 3-Series sedan, the Z4 features two versions of the 3.0L inline six tuned to 215-bhp (3.0i) and 255hp (3.0si). The ultimate Z4 is the factory-tuned M Roadster performance model. The M Roadster features the 330-bhp, 3.2L six-cylinder of M3 fame. A tuned suspension, 18-inch wheels and different front fascia further differentiate the M Roadster. The Z4 and M Roadster are manufactured in the U.S. in South Carolina.

A new leather trim color is available. Tire pressure monitoring is standard. The audio system now includes an auxiliary input for MP3 players.