Basically a hatchback version of the X3 crossover, the BMW X4 is a four-door “coupe,” of sorts, with a low roof and a considerably more intimate cabin, especially in the back seat. The front-end fascia has a bit more aggression to match the sporting purpose, but under the skin, the X4 is basically an X3. Engine choices are a 240-hp turbo four and a 300-hp turbo inline-six, both mated to an eight-speed automatic transmission and torque-vectoring all-wheel drive. Look for the X4 in late 2014.