BMW unveils M6 Gran Coupe

BMW has revealed the M6 Gran Coupe -  an interesting addition to the ranks of the super-saloon-coupes. The four-door variant of the 560PS 4.4-litre twin-turbo V8-powered M6 coupe goes on sale in May 2013 and will be an alternative to the likes of the Mercedes-Benz CLS63 AMG. It's priced at £97,490 on the road.

BMW claims that the M6 Gran Coupe is 5kg heavier than the M5 - however it's still heavy, weighing in at 1950kg. But with all that power, it manages to crack the 0-62mph sprint in 4.2secs. It does have an electronically limited maximum speed of 155mph, but like its German rivals, BMW offers an optional performance package, which raises limiter to 189mph - it also comes with uprated tyres.

The M6 Gran Coupe has received a package of visual upgrades, including an aerodynamically enhanced front bumper with improved cooling. The rear bumper features a diffuser, which four exhaust tailpipes are fed through. In true M-Sport fashion, the roof is made from carbonfibre reinforced plastic and looks great in contrasting gunmetal grey. The most obvious change though, are the Audi-style wide arches. They give the M6 Gran Coupe a widened track.

Lightweight 20-inch alloys house new high-performance steel brakes, although carbon-ceramic discs are available as an option.