BMW is wasting no time in enhancing the range of its recently launched 6-Series Coupé and Convertible models. To sum up the changes, from this autumn (and depending on the market, of course) both body styles will be available with an M Sport package, a new diesel engine and for the first time in the 6-Series model’s history, the Bavarian firm’s xDrive all-wheel-drive system.

Starting with the M Sport option, the package includes an M aerodynamics kit with bespoke front and rear bumpers, LED foglamps, 19-inch M light-alloy wheels in double-spoke design, sports seats with Alcantara/leather upholstery and an M leather steering wheel.

In addition, buyers can further customize their cars through the BMW Individual range, which comprises, bespoke paint finishes, light-alloy wheels and numerous other options.

This fall will see BMW adding the 640d Coupe and Convertible models to the lineup. Both are powered by a 3.0-liter straight-six delivering 313-horses at just 4,400 rpm and a monstrous peak torque of 630Nm (464 lb-ft) between 1,500 and 2,500.

BMW says the diesel engine enables acceleration of 0 to 100 km/h (62 mph) in 5.5 seconds for the Coupé and 5.6 seconds for the Convertible. The fuel consumption and CO2 values of the two diesel models are: 5.4 – 5.5 l/100 km (51.4 – 52.3mpg UK or 42.8 -43.6mpg US) for the Coupe, and 5.6 – 5.7 l/100 km (49.6 – 50.4 mpg UK) with 147 – 149 g/km for the Convertible.

The 650i Coupe and Convertible models powered by the 407HP turbocharged V8 will be optionally available with BMW’s xDrive all-wheel drive system. According to the Bavarian automaker, the 650i xDrive Coupé powers from rest to 100 km/h (62 mph) in 4.8 seconds, while the 650i xDrive Convertible requires 0.1 seconds longer to complete the same acceleration.

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