The 2010 BMW X5 is a mid-size luxury SUV that seats five passengers in standard form, and up to seven with an optional 3rd row of seating installed. Three trims are available: the xDrive30i, xDrive 35d, and the xDrive48i. The xDrive30i is powered by a 260 hp 3.0L six-cylinder engine. The xDrive35d features a 3.0L twin-turbocharged diesel engine, which generates 425 lb-ft of torque and is rated at 26 mpg on the highway. The largest engine is found in the 48i, and is a 4.8L V8, which produces 350 hp. A six-speed automatic transmission is found in all three trims.