The BMW 6 SERIES (2004-07) 645I 2DR COUPE 4.4 SMG AUTO is a two-door luxury coupe in the UK market. Its elegant shape and V8 character make it a stylish grand tourer, rather than a practical hatchback. It suits couples wanting comfortable long-distance travel, with occasional rear seats for adults. mycarcheck.com records 49 look-ups covering 22 different VINs, a useful snapshot rather than a huge sample. Checks show an average private-sale value of £2,800 and average recorded mileage of 107,000 miles. The average annual mileage is just 2,000, while cars have had around six previous keepers, suggesting varied ownership histories. Compared with a Mercedes-Benz CLK or Jaguar XK, the 645i stands out for its smooth, powerful engine and poised, refined feel. It is best for enthusiasts who value presence and cruising over fuel economy or low-cost upkeep. Before buying, check service records, condition and history, as upkeep can be costly.