In-depth Reviews

BMW 6 Series GT hatchback - Engines, drive & performance

Big, powerful engines give the BMW 6 Series GT great performance, but handling doesn’t quite match up

Carbuyer Rating

3.6 out of 5

Used car deals
Engines, drive & performance Rating

4.3 out of 5

BMW is renowned for its excellent engines and while it lacks the breadth of choice enjoyed by other models, the 6 Series Gran Turismo benefits from a decent selection of petrol and diesel options. All 6 Series GTs come with an eight-speed automatic gearbox and can be had with four-wheel drive – the latter is standard on the top-of-the-range 640i xDrive.

BMW 6 Series GT petrol engines

The entry-level engine is the 2.0-litre, turbocharged four-cylinder petrol in the the 630i. This is the only four-cylinder in the range, but isn’t particularly lacking in performance. It produces 254bhp, which translates to 0-62mph in 6.3 seconds and a limited top speed of 155mph (as with all models).

If you want a more powerful petrol engine, you’ll have to jump to the very top of the range and the 640i xDrive. It’s powered by a turbocharged 3.0-litre straight-six that produces 335bhp, which makes for a 0-62mph time of 5.3 seconds and a bit more low-down power.

It's an impressively smooth and refined performer, but things do get a little rough at high revs. It’s best to play to the the engine’s strengths, making the most of the impressive low-down power for easy, unfussed progress. The six-cylinder engine works well with the eight-speed gearbox, which changes gear quickly and smoothly.

Diesel engines

The 630d diesel produces the best combination of low-down punch and economy on paper, however. It’s only slightly more powerful than the four-cylinder petrol (261 versus 254bhp in the 630i), but that power is produced lower in the rev range. Economy of 55.3mpg is possible if you stick with rear-wheel drive, while four-wheel drive drops that figure to 49.5mpg. It’s likely this engine will best suit UK buyers’ tastes, but with prices starting at a shade under £51,000 for the 630d in SE trim, it’s not exactly cheap.

The large, heavy 6 Series GT simply can’t match the 5 Series for sheer driving pleasure, however; its steering and body control are nowhere near as accomplished. Outright grip and security is great, though, thanks especially to BMW’s xDrive four-wheel-drive system, which can move power to the wheel or wheels that need it most. This adds a level of security in bad weather compared to the standard rear-drive setup. Fit winter tyres and it's likely the 640i xDrive would make short work of icy and snowy conditions, too.

Most Popular

2020 scrappage schemes: the complete guide
Tips and advice
12 Oct 2020

2020 scrappage schemes: the complete guide

Best new car deals 2020
Deals
16 Oct 2020

Best new car deals 2020

2022 Volvo XC100 SUV to rival BMW X7
Volvo XC100 SUV preview
Volvo
20 Oct 2020

2022 Volvo XC100 SUV to rival BMW X7