The 2008 BMW 5 Series is a midsize luxury sedan that is available in 8 different trims: 528i, 528xi, 535i, 535xi, 550i, M5, 528xi Sports Wagon and 535xi Sports Wagon. It is known for its superior balance of luxurious comfort and dynamic driving performance. Engine options range from a refined 230-hp 3.0-liter inline-six in the 528i version to a powerful 360-hp 4.8-liter V8 in the 550i while a mighty 500-hp 5.0-liter V10 engine is exclusive to the high-performance M5. All engines are mated to a six-speed manual transmission, while a six-speed automatic is optional. Standard safety features include antilock disc brakes, stability control, front-seat side airbags and front-and-rear side-curtain airbags. The iDrive infotainment system, complete with navigation, controlled by a rotary knob is a prominent feature although it has faced criticism for its complexity.