BMW has finally unveiled the new BMW 6-Series in solid-roofed Coupe form, with an internal codename of F13. The F12 Cabriolet with a soft top roof was unveiled earlier. Like the F12, the new F13 Coupe debuts with two engine variants at launch time – the 3.0 litre turbocharged 640i Coupe and the 4.4 litre twin-turbocharged V8 650i Coupe.

The biggest difference between the 6-er Cabrio and the 6-er Coupe is of course the roof – the Cabrio uses a soft folding top while the Coupe has a traditional fixed roof. The Coupe also has a slightly shorter tail as it does not have to store a folding roof inside its rear.

One of the biggest changes you notice at the front end though are the headlamps – as you can see from the image above the 6-er Coupe’s headlamps seem to have been significantly updated from the one launched with the Cabrio. It’s much more high tech and similar to the original headlamps on the BMW Gran Coupe Concept.

These are the optional LED headlights, which use LEDs exclusively as its light source for the driving lamps, the low beams and high beams.

The 640i pulls to 100km/h in 5.4 seconds and goes on to a top speed of 250km/h. The 6 cylinder turbocharged engine is of the latest N55 family, with a single turbo, high precision fuel injection and VALVETRONIC valve and throttle management. The 640i comes with an Auto Start-Stop function as well as an “ECO PRO” mode which tweaks the ECU, throttle behavior and the shifting pattern of the 8-speed automatic to favor a relaxed and frugal driving style while keeping the RPMs low.

The 6-Series Coupe can also be specified with a top of the line Bang & Olufsen High-End Surround Sound System. It consists of 16 speakers distributed around the cabin – 2 bass speakers, 7 mid-range speakers and 7 tweeters, all with individual amplifiers. This system also adds additional design features in the interior – the B&O system’s speakers use all-aluminium speaker grilles, in case the superior audio quality doesn’t remind you that you’ve shelled out extra for the high-end system.

There is even one tweeter positioned on top of the iDrive display which is motorized to rise up from the dashboard when in use. Adds for some cool factor like the motorized air cond vents in the Jaguar XF.

Look after the jump for a full photo gallery as well as a video of the 6-Series Coupe in action – you can check out the motorized tweeter I mentioned earlier in action too.

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