The BMW 5 SERIES (2003-07) 523I 5DR TOURING 2.5 SE is a roomy five-door estate from the premium executive-car class, offering more luggage space than the saloon while retaining a comfortable, smart feel. In the UK used market, it suits buyers wanting a practical family or business car rather than a small, inexpensive runabout. mycarcheck.com records show seven look-ups covering five distinct VINs, so the figures offer a small snapshot, not a definitive market average. Those checks show an average private-sale valuation of £1,400 and average recorded mileage of 139,000 miles. The cars averaged five previous keepers, while reported annual mileage averaged 22,000 miles. History and condition checks matter on older examples. The 2.5-litre petrol 523i suits families and commuters seeking an estate with a premium cabin and relaxed, comfortable drive. Against rivals such as the Ford Mondeo, it feels more upmarket and engaging, though ownership costs may be higher.