The BMW 3 Series (2005-12) 320i 170 4dr Saloon is a compact executive petrol saloon, positioned as a more premium alternative to mainstream family cars in the UK. It competes with the Audi A4 and Mercedes-Benz C-Class, offering four-door practicality, a separate boot and a smart, understated SE Business Edition finish. mycarcheck.com data includes 84 look-ups across 44 distinct VINs, providing a snapshot of checked cars. Records show an average private-sale valuation of £3,900 and average recorded mileage of 82,000 miles. Average annual mileage is 6,000, with about three previous keepers; figures describe checked vehicles, not a guaranteed price or history. This BMW 320i automatic suits commuters and small families wanting a daily saloon, with smooth automatic driving and space for passengers and luggage. Its 170-horsepower petrol engine gives a livelier feel, while the 3 Series is prized for composed handling. Compare service history, condition and running costs carefully before buying.