The BMW 5 SERIES (2003-07) 550I 4DR SALOON 4.8 M SPORT SMG AUTO is a large, premium four-door saloon from the executive car class. In the UK used-car market it sits above family cars, offering more space and status than a hatchback, while remaining easier to live with than a luxury limousine. Its automatic gearbox and roomy cabin suit longer journeys. Mycarcheck.com has recorded 202 look-ups covering 50 distinct VINs, a useful sample for this uncommon, powerful version. Checks show an average most recent mileage of 138,000 miles and around 5,000 miles driven annually; the average recorded keeper count is just over six. The average private-sale valuation is £1,800, though condition and history can change value considerably. The 4.8-litre V8, M Sport styling and response make it a distinctive alternative to Mercedes-Benz E-Class and Audi A6 rivals. It suits drivers seeking comfort and performance, but expect higher fuel costs than smaller saloons.