Introduced at the 2004 Detroit Motor Show.
Country of origin: Germany

The 645Ci Convertible is first and foremost a BMW, so dynamic performance comes standard. It shares its 4.4-liter V8 with the 645Ci Coupe. Infinite adjustment of virtually all relevant parameters such as valve timing (double-VANOS), valve lift (VALVETRONIC) and intake manifold runner length enables the engine to adjust instantly to any demand and requirement.

Of course, you expect the new 6 Series Convertible to offer handling to match its straight-line performance. Active Roll Stabilization (ARS) is standard to keep things on-the-level even when one's driving gets enthusiastic by reducing body lean in corners. For those who care for an even finer edge, a Sport Package is available. In addition to sport seats and a sport steering wheel the package includes firmer shocks and springs and mixed-width 19-inch wheels with performance tires.

The 645Ci Convertible offers all passengers comfort, luxurious features, and an ambience full of style and elegance. Power driver's and front passenger's seats are standard, including a triple memory function on the driver's seat, which adds the final touch of convenience to the ergonomic Dakota leather seats.

Within the luxurious interior the driving experience is enhanced by the standard DVD-based On-board Navigation System. This system is controlled, along with the sound system and other features, by BMW's innovative iDrive. The choice of sound systems includes the standard 8-speaker system or the optional Logic 7 system, which includes a 6-disc CD changer.

BMW's highly innovative optional Head-Up Display is available as an option. It projects important driving information directly into the driver's line of vision. This includes the current road speed, navigation instructions, speed limits and feedback from the Check/Control. The virtual image provided by the Head-Up Display is presented in front of the driver seemingly on the road ahead, and allows the driver to view the information without taking their eyes off the road.

Opening with full power operation, the soft top disappears completely within a matter of seconds beneath the firm cover on the roof compartment. The driver is able to open or close the fully-automated top from the cockpit simply by pressing a button or turning the key in the door lock. You can even do this when setting off or in stop-and-go traffic up to a speed of 20 mph. All windows close in the process and the soft top locks and unlocks.