The BMW 6 Series Gran Coupe has been unveiled, ahead of its public debut at the Geneva motor show in March 2012.
The Gran Coupe is based on the 6 Series coupe, but is 113mm longer: all of the increase is accounted for by the Gran Coupe's longer wheelbase.
The front and rear of the Gran Coupe are virtually identical to those of the 6 Series; minor changes to the bumpers are the only real difference. Despite the two extra doors, the sleek roofline and frameless side windows maintain a coupe-like look.
BMW describes the Gran Coupe as a 4+1: there are four full-size seats and a smaller central rear seat. The centre console stretches into the rear of the cabin, but BMW says there is enough space in the central seat for a smaller passenger.
The rear seatbacks can be folded down to expand the 460-litre boot to 1265 litres, while an optional loading hatch allows two pairs of skis to be transported, even when the two outer rear seats are occupied.
Much of the interior is shared with the 6 Series coupe, with the same dash design that's angled towards the driver.
Three turbocharged engines will be available: the 640i has a 316bhp 3.0-litre six-cylinder petrol unit, while the 650i has a 444bhp 4.4-litre V8. The diesel option is the 640d, which has a 309bhp 3.0-litre six-cylinder unit. Power is sent to the rear wheels via an eight-speed automatic gearbox.
All three models have a range of BMW Efficient Dynamics features, including engine stop-start and brake-energy regeneration. Average fuel consumption and CO2 emissions are:
• 640i: 36.2mpg, 181g/km
• 650i: 32.1mpg, 206g/km
• 640d: 50.4mpg, 148g/km
BMWs Variable Damper Control (VDC) and Active Steering systems are available as options.
Two trims will be available: SE and M Sport. Standard equipment for all versions includes leather upholstery, sat-nav, front and rear parking sensors, electronic steering wheel adjustment and heated front seats.
M Sport models have a range of visual upgrades, including bespoke bumpers, alloy wheels and interior trim, black brake calipers and sports seats.
Prices start at 61,380 for the 640i SE (1815 more than the equivalent coupe model) and rise to 75,130 for the 650i M Sport.