The G05 BMW X5 is an excellent luxury SUV that boasts a well-appointed interior and a sporty driving character. This particular X5 M50i touts over 500 horsepower from its twin-turbo V8 and some great factory equipment – including the Executive Package, an M Sport exhaust, and a Sky Lounge panoramic sunroof. Power comes from a 4.4-liter twin-turbocharged V8, rated at 523 horsepower and 553 lb-ft of torque. Output is sent to all four wheels via an 8-speed automatic transmission and BMW's xDrive permanent all-wheel drive system.