Engine Options: sDrive40i / xDrive40i: 3.0-liter turbocharged inline-6, producing 335 horsepower and 330 lb-ft of torque xDrive50i: 4.4-liter twin-turbo V8, producing 456 horsepower and 479 lb-ft of torque M50i: 4.4-liter twin-turbo V8, producing 523 horsepower and 553 lb-ft of torque Transmission: 8-speed automatic Drive Type: Rear-wheel drive (sDrive) or all-wheel drive (xDrive) Fuel Efficiency: sDrive40i: 21 mpg city / 26 mpg highway xDrive40i: 20 mpg city / 26 mpg highway xDrive50i: 16 mpg city / 22 mpg highway M50i: 15 mpg city / 21 mpg highway12 Dimensions: Length: 194.3 inches Width: 78.9 inches (without mirrors) Height: 68.7 inches Wheelbase: 117.1 inches Ground Clearance: 8.7 inches Weight: Curb weight ranges from 4,813 lbs to 5,260 lbs depending on the model Cargo Capacity: 33.9 cubic feet with all seats in place, expandable to 72.3 cubic feet with rear seats folded Towing Capacity: Up to 7,200 lbs12 Seating Capacity: 5 (optional third row for 7 seats)