The BMW 3 SERIES (2005-12) 318D 143 4DR SALOON 2.0D SE BUSINESS EDITION STEP AUTO6 is a four-door diesel saloon, aimed at buyers wanting a refined alternative to family cars. In the UK used market, it sits among executive compact saloons, competing with versions of the Audi A4 and Mercedes-Benz C-Class. Mycarcheck.com records 199 look-ups covering 71 distinct cars, a useful sample of real-world interest. The average private-sale valuation was £2,800, with average recorded mileage of 123,000 miles and annual use of 7,000 miles. Cars checked had about four previous keepers on average, so condition and history deserve close attention. With its automatic gearbox and diesel engine, it suits commuting, longer trips and small-family use. The SE Business Edition offers an understated, well-equipped feel, while the 3 Series is known for composed handling and a more engaging drive than many rivals. Check service history, mileage and ownership details carefully before buying.