The 330e plug-in hybrid electric vehicle (PHEV) builds upon the already impressive 3 Series, blending athletic handling, an energetic powertrain, and the ability to drive under electric power for an EPA-estimated 20 miles. It’s one of the best-driving PHEVs we’ve tested, due in large part because the 330e’s electric drive was added to BMW’s fantastic turbocharged four-cylinder powertrain. As such, the 330e is an improvement in several ways over the regular 330i: It’s quicker, slightly quieter, and delivers a smoother ride.