This coupelike sporty SUV is a derivative on the capable X5, which is a good place to start. Unlike its sibling, the X6's styling severely hampers rear visibility, cabin access, and cargo room. More than just a new body, though, the X6 is sportier than the X5, with tauter handling and a stiffer ride. Most versions are powered by a 3.0-liter turbocharged six-cylinder, which returned 21 mpg overall in our tested X5. A 4.4-liter turbocharged V8 is also offered. The interior is luxurious and well-crafted, and the seats are supportive for long trips. The infotainment system takes time to master but ultimately proves logical. A rear-wheel-drive version is available, as is a high-performance M version that commands a six-figure price.