The BMW 3 SERIES CONVERTIBLE (2007-14) 330D 231 2DR CONVERTIBLE 3.0 231 SE is a premium, four-seat, open-top sports car, rather than a practical family hatchback. In the UK used market, it offers BMW saloon refinement with roof-down appeal, and sits above ordinary compact convertibles for performance, prestige and comfort. Mycarcheck.com has recorded 46 look-ups covering 23 distinct VINs, a useful snapshot rather than a full market census. Checked examples average £3,600 in private-sale value and 129,000 miles; average annual mileage is 3,000, with 5.5 previous keepers. These figures suggest checking each car’s history and condition carefully before buying one. With its six-cylinder diesel and folding roof, the 330d suits drivers wanting relaxed long-distance cruising, brisk overtaking and open-air trips, rather than rear-seat or boot space. It blends comfort with engaging handling, competing with Audi A5 and Mercedes-Benz CLK convertibles; its mix of diesel pulling power and usability is distinctive.