The BMW 3 Series 320d M Sport is a compact executive saloon, a four-door family car with a premium feel. This 2005–12 automatic diesel sits in a popular UK used-car class, competing with the Audi A4 and Mercedes-Benz C-Class for drivers seeking comfort and an enjoyable drive. Mycarcheck.com has recorded 1,414 look-ups covering 525 different VINs, a substantial sample. Its data shows an average private-sale valuation of £1,900 and average recorded mileage of 139,000 miles; annual mileage averages 9,000. These figures describe checked examples, not a guaranteed price or condition, so inspect each car’s history and upkeep. Sporty M Sport styling, an automatic gearbox and diesel economy make it suited to commuters and small families needing motorway comfort and useful space. It offers balanced handling and a comfortable, quality cabin. Checked cars averaged nearly seven previous keepers, so review servicing, mileage and condition before choosing the right example for you.