The BMW 4 Series Gran Coupe is a five-door hatchback with coupe-inspired styling, a sleeker alternative to a conventional family saloon. The 2017–21 420i xDrive M Sport pairs petrol power with four-wheel drive, appealing to buyers wanting a polished car with extra reassurance in wet or wintry conditions. In mycarcheck.com data, 24 checks covered 12 distinct VINs, useful context rather than a full market picture. Checked cars averaged 44,000 miles and 7,000 miles a year; the average previous-keeper figure was 0.67, a notably low average for these examples. With comfortable seating, a useful rear hatch and M Sport’s purposeful look, it especially suits commuting, couples and small families seeking more style than an ordinary hatchback. The cabin and composed road manners feel more premium and distinctive than rivals such as the Audi A5 Sportback, while xDrive grip is a bonus; check condition, service history and running costs before buying.