Used BMW 6 Series for sale near Isleworth

CarGurus expert rating: 3 out of 5
CarGurus user rating: 4.8 out of 5
Percentage of good/great deals available on CarGurus: 32.9%
Overall CarGurus rating: 4.1 out of 5
Available Listings: Around 160
Average Price: Around £19,000

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 niche executive car that succeeded the 5 Series GT, combining BMW underpinnings with a coupe-like body and a practical hatchback. While its styling might be divisive, it offers exceptional accommodation with generous space for occupants and a substantial 610-litre boot, expanding to 1800 litres with the seats folded. The interior is finished to BMW’s high standards, providing a truly premium feel.

Powered by efficient four- and six-cylinder engines, including the 630d which can achieve close to 50mpg, running costs are reasonable for its class. Two well-equipped trim levels, SE and M Sport, offered standard features like adaptive LED headlights and satnav. However, despite its excellent engines, the car's large size and weight mean it prioritises comfort and pace over the sharp driving dynamics found in some rivals or even BMW's own 5 Series.

Best for: Buyers needing a large, practical, and comfortable luxury car with impressive space and premium features, especially those who appreciate a hatchback layout in an executive package.

Not ideal for: Those prioritising elegant, sleek styling, sharp driving dynamics, or a more conventional executive saloon or touring car.


Comparison vs Key Rivals



The Verdict

You should buy the BMW 6 Series GT if: You need a large, practical, and comfortable luxury car with impressive space and premium features, especially if you appreciate a hatchback layout in an executive package.

Consider alternatives if: You prioritise elegant, sleek styling, sharp driving dynamics, or a more conventional executive saloon or touring car.

Competitive Position: The BMW 6 Series Gran Turismo (2018-2020) offers a unique proposition in the executive car market, blending BMW luxury and comfort with the practicality of a large hatchback. While its divisive styling and less engaging driving dynamics might not appeal to all, its spacious interior, high-quality finish, and reasonable running costs for its class make it a compelling choice for those prioritising comfort, space, and premium features over outright sportiness or conventional aesthetics. It stands as an interesting alternative to traditional saloons and estates, providing a distinct blend of attributes.

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 January 2026, CarGurus expert reviews, and CarGurus user reviews.