The BMW 6 SERIES (2004-07) 645I 2DR COUPE 4.4 AUTO is a large, premium two-door coupe, not a family hatchback or city car. In the UK, it sits among luxury grand tourers, combining stylish looks with comfortable long-distance travel and space for two adults to travel in real comfort together. Mycarcheck.com records 2,013 look-ups across 632 VINs, a substantial sample for this older BMW overall. The average private-sale valuation is £2,700, with average recorded mileage of 118,000 and around seven previous keepers. Annual mileage averages only 4,000, suggesting some are occasional-use cars; condition and service history deserve close attention. The 645i’s design, comfortable cabin and smooth V8 power suit touring and special outings. It is best for couples or enthusiasts, not families needing rear-seat access or commuters watching fuel bills. Against rivals such as the Mercedes-Benz CL-Class, it brings a BMW feel, but upkeep and fuel costs can be significant.