The BMW X4 is based on the X3, and has more safety technology and an additional inch of legroom compared with its predecessor. But its coupelike profile sacrifices some utility and visibility compared with the X3. The base version is 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 would expect similar performance from the X4. FCW, AEB with pedestrian detection, BSW, and RCTW are standard, as is a 10.25-inch touch screen with navigation.