Price from: £46,810 On sale: November
There will be three engine options at first: 630i and 640i petrols and a 630d diesel. Two trim levels will be available: SE and M Sport; the latter comes with chunkier bumpers, more prominent sills and larger wheels and tyres.
Prices will start at £46,810 for the 630i GT SE and rising to £57,570 for the 640i xDrive GT M Sport.
Although the GT will initially be part of a four strong 6 Series line up, alongside the Coupe, Cabriolet and Gran Coupe, those models will be phased out in the next two years, leaving the GT as the sole 6 Series model.
What’s new on the BMW 6 Series GT?
The 6 Series GT has bolder front end styling and a more shapely rear than the 5 Series GT, which was criticised for looking bulbous at the back. In comparison to that car, it is longer and not as tall.
It is 150kg lighter than the 5 Series saloon due to its new platform and greater use of aluminium and hot-formed high-strength steel in its body structure.
Rear air suspension with automatic self levelling is standard, but there will be the option to upgrade to all-round air suspension. Like other BMW models, rear wheel drive will be standard but higher end 6 Series GT models will be available with optional four-wheel drive and active rear steering.
What engines will the BMW 6 Series GT come with?
It will use some of the petrol and diesel engines already offered in the 5 Series line up; they will only be offered with an eight-speed automatic gearbox.
The smallest petrol engine, the 630i, is a turbocharged four-cylinder unit that is claimed to do 0-62mph in 6.3sec yet achieve official fuel economy of 45.6mpg. Its CO2 emissions are quoted as 142g/km.
Next in the line-up is the 640i, the latest version of BMW’s turbocharged 3.0-litre in-line six-cylinder petrol engine. In the four-wheel-drive XDrive GT it completes the 0-62mph dash in 5.3sec, sips fuel at a rate of 36.7mpg and has CO2 emissions of 177g/km.
The only diesel available at launch will be the 3.0 six-cylinder 630d, which does 0-62mph in 6.1sec and has official fuel economy of 57.7mpg and emissions of 129g/km.
More engines will be added in 2018, including an entry-level four-cylinder 620d.
It’s also possible that BMW will offer a pair of scorchingly fast M models: a M550i with a twin-turbocharged 4.4-litre V8 engine and a M550d which will have a quad-turbocharged 3.0-litre diesel.
The last model to join the line up will be a plug-in petrol-electric hybrid called the 640e. It will combine a 2.0-litre petrol engine with an electric motor.
What’s the BMW 6 Series GT like inside?
Inside, the 6 Series GT is very similar to a 5 Series saloon, but with front seats that are positioned higher up and rear seats that can be ordered with optional electrical adjustment.
A 10.3-in touchscreen infotainment system with voice and gesture controls is offered as an option.
How much will the BMW 6 Series GT cost?
Prices for petrol models will start at £46,810 for the 630i SE and £53,970 for the 640i xDrive, with a premium of just under £4000 for M Sport versions. Diesel prices range from £50,665 for the 630d SE to £56,605 for the 630d xDrive in M Sport trim.
The best luxury cars to buy right now
If you want sleek, coupe-like looks from your luxury car, then Audi's A7 Sportback is a very appealing option. The interior is stunning, it has a hatchback-style tailgate that boosts practicality and even entry-level versions come very well equipped. Go for the Ultra model and you'll also get a smooth and fairly frugal 3.0-litre diesel engine.
Our pick: 3.0 TDI Ultra SE Executive S tronic
The Rolls-Royce Ghost is obviously a very expensive choice, with prices starting from around £225,000, but that still makes it something of a bargain compared with the larger Phantom. As you'd expect from Rolls-Royce, the Ghost's interior is covered in the finest materials available and it's comfortable for both driver and passengers. There's a powerful 6.6-litre V12 engine under the bonnet, too, providing you with a heady 563bhp.
Our pick: EWB
8. Mercedes CLS
Like the Audi A7 (above), the Mercedes CLS is designed to appeal to those who want a swoopy luxury coupé but who also need space for the family. However, the CLS is slightly more enjoyable to drive, thanks to its more precise steering. The interior is appealing, too, because it's comfortable, classy and loaded with kit. Only the slightly dated and distracting infotainment system stops the CLS finishing higher.
Our pick: 350d AMG Line
Read on to see more of our favourite luxury cars, and the ones to avoid
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