The MAZDA 6 (2008-10) 4DR SALOON 2.0 D DPF 140 SL is a spacious, four-door family saloon from the mainstream large-car class. It offers a traditional booted shape rather than a hatchback, with room for passengers and luggage, and suits buyers wanting comfortable everyday transport without moving up to an SUV. mycarcheck.com has recorded 28 look-ups covering 25 different VINs, a modest sample that gives a useful snapshot rather than a definitive reliability verdict. Those checks show an average private-sale valuation of £1,600 and average recorded mileage of 133,000 miles; typical annual use is 8,000 miles, with about four previous keepers. The 140 SL diesel suits commuters and families making longer journeys, with a roomy cabin, relaxed manners and economical running. Compared with rivals Ford Mondeo and Vauxhall Insignia, the Mazda 6 is known for enjoyable driving and smart styling; check condition, service history and emissions equipment on older diesel examples.