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Overall CarGurus rating:* 4.1 out of 5
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Average Price: Around £14,500

BMW 6 Series Gran Turismo (2018-2020) Pros and Cons

Pros	Cons
An interesting alternative to a conventional executive car	The xDrive 4x4 versions cost more to fuel than two-wheel-drive models
The hatchback layout is practical and there's plenty of luggage space	Not as compelling to drive as a BMW 5 Series
Four-wheel drive is available with some engines	Divisive looks may put you off

Quick Summary

The BMW 6 Series Gran Turismo (2018-2020) is a large and practical executive car that blends tried-and-tested BMW underpinnings with a spacious hatchback layout. Launched in 2017 as the successor to the 5 Series Gran Turismo, it offers improved space, practicality, and efficiency. The car features a generous 610-litre boot (expanding to 1,800 litres with rear seats folded), premium interior finishes, and a powered tailgate for easy access. Whilst its styling is somewhat ungainly compared to rivals like the Mercedes-Benz CLS, it delivers comfort and accommodation in abundance.

The engine line-up includes the 2.0-litre 630i, 3.0-litre 640i xDrive, and efficient diesel options in 630d or 630d xDrive form. The 630d achieves around 50mpg in real-world conditions, whilst the 640i xDrive manages close to 30mpg. However, the car is big, heavy, and uncommunicative to drive, lacking the handling finesse of the 5 Series or 7 Series. Running costs are reasonable for a premium executive car, though VED premiums apply due to its original list price exceeding £40,000. As a depreciated used purchase, it appeals to those prioritising comfort and space over driving engagement.

Best for: Buyers seeking a spacious, comfortable, and luxurious executive car with practical hatchback versatility, and those wanting an alternative to conventional saloons.

Not ideal for: Drivers prioritising engaging handling, those seeking sleek styling comparable to the Mercedes-Benz CLS, or buyers concerned about fuel costs with four-wheel-drive models.


Comparison vs Key Rivals



The Verdict

You should buy the 6 Series Gran Turismo if: You prioritise comfort, space, and practicality in a premium executive package, and seek an interesting alternative to conventional saloons.

Consider alternatives if: You value engaging handling, sleek styling, or wish to avoid higher fuel costs associated with four-wheel-drive models.

Competitive Position: The BMW 6 Series Gran Turismo is a capable and spacious executive car that offers genuine practicality through its hatchback layout and generous boot space. Whilst it falls short of the Mercedes-Benz CLS for styling elegance and the Porsche Panamera for driving engagement, it remains a compelling choice for those prioritising comfort and accommodation. The Tesla Model S offers a more forward-looking alternative with superior technology, whilst the BMW 5 Series provides sharper handling if driving dynamics are paramount. For buyers seeking a relaxing, luxurious cruiser with exceptional space, the 6 Series Gran Turismo delivers excellent value as a used purchase.

Read our full BMW 6 Series Gran Turismo Review

*The Overall CarGurus rating: that informs these recommendations is based on CarGurus' proprietary market data from July 2026, CarGurus expert reviews, and CarGurus user reviews.