The 2012 BMW Z4 is a RWD roadster available with three different engines; a standard 2.0-liter twin-turbocharged 4-cylinder engine (240 hp), an optional 3.0-liter twin-turbocharged V6 (300 hp), and a performance-oriented 3.0-liter twin-turbocharged V6 (335 hp). Transmission options consist of a 6-speed manual transmission, 8-speed automatic transmission, and a 7-speed double clutch automatic transmission. Fuel mileage falls within an EPA estimated range of 17 mpg city to 34 mpg highway. Features include electronic throttle control, xenon adaptive headlights, iPod integration, HD radio, hands-free phone capabilities, rain-sensing windshield wipers, automatic climate control, 10-way power seats, and heated external mirrors. Safety is comprised of advanced airbags, cornering brake control, driving dynamics control, anti-lock braking, dynamic stability control, brake drying, dynamic traction control, vehicle-speed-sensitive electric power steering, and tire pressure monitoring. The Z4 is backed by a 4-year/50,000-mile warranty.