The BMW 6 SERIES GRAN TURISMO (2017-21) 640I XDRIVE 5DR GRAN TURISMO 3.0 340 GPF SS EU6 SE AUTO8 is a premium five-door hatchback, combining saloon comfort with SUV-like space. In the UK market, it is a distinctive alternative to executive saloons and large family SUVs. mycarcheck.com records five checks across two VINs, a small sample that cannot establish reliability trends. The cars averaged £30,600 in private-sale value, 27,000 miles and one previous keeper; recorded annual mileage averaged 10,000. Treat these as useful context, and verify each car’s condition and history. Smooth six-cylinder petrol power, all-wheel drive and an automatic gearbox make the 640i suited for long journeys, family use and drivers who enjoy refined performance. Its roomy cabin and useful tailgate stand out against executive saloons, while its sleek shape is less bulky than an SUV. Expect fuel costs than in smaller family cars, and check servicing records before purchase.