You have to admit that BMW has succeeded on its difficult mission to merge the Z4 coupe and cabriolet into a single car. Featuring a new retractable hardtop, the BMW Z4 offers the best of both worlds, in addition to top-of-the-line performances. Under the hood are three engine possibilities ranging from 255 to 335 hp. Sportier and with more flair than its predecessor, the Z4 has a lot of attractive qualities.