The X5 has powerful competition like the Audi SQ8, and the Porsche Cayenne, however, the X5 dominates in giving the driver that race/fun factor while looking sporty. The powerful powerplants available satisfy multiple tastes, from a well-powered 3.0L 6-cylinder making 375-horsepower, to the meaner Twin-turbo V8 that powers the M60i and makes 523-horsepower. The X5 M is on a class of its own, generating an astounding 617-horsepower and 553 pound-foot of torque out of its twin-turbo V8 engine mated with an electric motor, appealing to the drivers who want to race around the track and push the limits.