The briefest of brief spins in the sexy 2017 BMW X4 M40i! How does this all-new turbo six feel versus the previous X4 xDrive35i M Sport? Far more focused, to be honest. The new motor series is not just up 20HP/30-pound-feet of torque. It also gains a biting new exhaust bark in all forms. That back-bellow and M-style popping on the overrun is cranked to the max in the X4 M40i. And we adore it. The exterior is also quite sexy with its dark-tinted badges, chrome-free appearance and overall sinister-ness. The grey mirror caps and blocky alloys reinforce this impression ... Keep reading