The 2011 Mercedes-Benz M-Class is a midsize luxury SUV. It's available in four trims: ML350, ML350 BlueTec, ML550, and high-performance ML63 AMG. The ML350 is fitted with a 268-hp 3.5-liter V6 engine, while the BlueTec variant houses a turbodiesel V6 that delivers 210-hp. The ML550 ups the ante with a 382-hp 5.5-liter V8, and the ML63 AMG boasts a tremendous 503-hp 6.2-liter V8. All models are equipped with a seven-speed automatic transmission and AWD. Notable 2011 upgrades include newly standard features like a sunroof, a power liftgate, and Mercedes’ remarkable PreSafe system for enhanced safety. Infotainment highlights feature an 8-inch screen, a back-up camera, and an optional Harman Kardon® sound system.