The BMW X4 is based on the current X3. It gains new safety technology and an inch of legroom over its predecessor. But its coupelike profile sacrifices some utility and visibility for a more athletic appearance. The base version is now called the xDrive30i and features a 248-hp turbocharged four-cylinder engine; the M40i is powered by a 382-hp turbo six-cylinder engine. Both have all-wheel drive and a smooth-shifting eight-speed automatic transmission as standard equipment. We found the X3 to be thoroughly engaging to drive and expect similar performance from the X4. Forward collision warning and automatic emergency braking with pedestrian detection are standard, as is a 10.25-inch touch screen with navigation.