The 2010 BMW Z4 sees no major changes following its redesign for the 2009 model year. Z4 seats two and only comes as a convertible with a power-retractable hardtop. Z4 comes in two trim levels, each with a 3.0-liter 6-cylinder engine. The sDrive30i has 255 hp, while the sDrive35i is turbocharged and has 300 hp. Both have a standard 6-speed manual transmission. A 6-speed automatic is optional on the sDrive30i, while a 7-speed automatic is optional on the sDrive35i. Available safety features include ABS, traction control, antiskid system, and side airbags that provide head and torso protection. BMW's Dynamic Drive Control, which allows drivers to alter throttle, traction control, and steering response is included as part of the optional Sport Package. The Sport Package also includes adjustable shock-absorber control and 18-inch run-flat tires. Leather upholstery and automatic climate control are optional on the sDrive30i and standard on the sDrive35i. A navigation system is optional. The optional "through-loading" system includes a luggage pass-through for skis or golf bags to the passenger compartment.
