Since 1976 these unmistakable characteristics have been grouped together in the BMW line-up under the model designation "6". The first-generation BMW 6-Series shone not only with its outstanding driving dynamics, but also its state-of-the-art comfort and safety technology. Its successor, unveiled in 2003, radiated a thoroughly progressive air, its dynamic appearance complemented by a wealth of innovations. The new variants added to the 6-Series line-up also broke new ground - and fundamentally enriched the driving experience on offer in the luxury class. The debut of the BMW 6-Series Convertible in 2004 saw driving pleasure in an exclusive sports car and the joy of advanced technology married with open-top enjoyment for the first time. And the world's sportiest six-cylinder diesel engine, introduced in the BMW 635d Coupe and BMW 635d Convertible in 2007, added another alluring facet to the driving pleasure offered by cars in this segment: impressive pulling power and exceptional efficiency were its hallmark qualities.
The new BMW 6-Series Convertible is all about exclusive open-top driving enjoyment, comprising majestic ride comfort and richly engaging performance attributes in equal measure. A major element of the four-seater's extrovert charisma is the transition between the body and the interior, which has been designed to evoke the character of a boat deck - as is typical of BMW Convertibles - when the roof is down. The sophisticated fabric soft-top of the 6-Series Convertible stands out with its unique "fin" architecture, complete with a glass rear window that opens separately, and offers unrestricted all-season usability and unrivalled acoustic comfort.
Supreme power development, impressive refinement and exemplary efficiency are attributes shared by all the engines available for the new BMW 6-Series Convertible, new BMW 6-Series Coupe and new BMW 6-Series Gran Coupe. The range consists of a petrol V8 producing 330 kW/450 hp, a 235 kW/320 hp six-cylinder in-line petrol unit and a straight-six diesel with 230 kW/313 hp. All enjoy the benefits of the BMW TwinPower Turbo technology developed under the BMW EfficientDynamics banner, all meet the EU6 exhaust emissions standard and all link up as standard with an eight-speed Steptronic sport transmission.
BMW TwinPower Turbo technology helps the engines to develop their power instantaneously, gives them a vivacious appetite for revs and imbues them with impressive efficiency. The extensive array of BMW EfficientDynamics technology fitted as standard and the cars' optimised aerodynamic properties also contribute to a further reduction in fuel consumption and emissions. For example, the BMW 640i Convertible, BMW 640i Coupe and BMW 640i Gran Coupe - all powered by a six-cylinder in-line petrol engine - each burn 0.2 litres less fuel per 100 kilometres than their direct predecessors. The diesel models achieve a similar reduction in their fuel consumption and emissions. With average economy of 5.5 - 5.2 litres per 100 kilometres (54.3 - 51.4 mpg imp) and CO2 emissions of 147 - 139 grams per kilometre (figures as per the EU test cycle, depending on the tyre format), the new BMW 640d Coupe sets the efficiency benchmark.