The 6-series is BMW’s largest convertible offering, embodying the spirit of elegant, open-top grand touring in a most modern fashion. The 6-series is available with either a 315-hp 3.0-liter inline-six (640i) or 445-hp 4.4-liter V-8 (650i); both engines mate to an eight-speed automatic transmission.
When BMW launched the i8 in 2013 as a production model derived from a 2009 concept car, some feared that it might age poorly. The shape was a bit too outrageous to be considered timeless, and there was the risk that advances in battery technology might render its powertrain obsolete sooner rather than later.
The Z4 is among the few roadsters that look as good with the top up as they do with it down. Its hardtop can open or close in 19 seconds, even at speeds up to 25 mph, and seams perfectly with its long hood to create a unified, flowing exterior that screams muscle, yet manages to stay lean.