The BMW is a highly specialized alternative to the X5. BMW stylists replaced the wagon-like backend and third row seat with a sharply raked fastback profile. The result defies categorization. The X6 has the all-wheel-drive and tall stance of an SUV, but little of the utility. Inside there is seating for up to five and a shallow storage area in the hatch. The X6 comes with a variety of powertrains ranging from the six-cylinder XDrive35i to the X6 M which is powered by a 555-bhp V8. Like other BMW vehicles, the X6 has a long list of technological features. Prices range from about $60,000 to over $90,000.