The BMW 6 SERIES (2004-07) 630I 2DR CONVERTIBLE 3.0 SPORT SMG AUTO is a large, two-door premium convertible, offering open-air motoring with more presence than a typical everyday cabriolet. In the UK used-car market, it sits in the comfortable grand-touring class, rather than the practical family hatchback or affordable city-car category. mycarcheck.com records show 527 look-ups across 111 VINs, a solid sample for this model. The average private-sale valuation is £3,800; checked cars averaged 125,000 miles, nearly six previous keepers and 2,000 miles annually. These are database averages, not a price or condition guarantee, so check each car’s history carefully before buying. With its six-cylinder engine, distinctive styling and roof-down drive, it suits couples or enthusiasts seeking a cruiser, not families needing space or low costs. Compared with the Mercedes-Benz CLK and Jaguar XK, the 630i is known for a sportier BMW feel, while its SMG automatic gives shifts an involved character.