The BMW 5 SERIES (2003-07) 545I 4DR SALOON 4.4 SPORT is a large, premium four-door executive saloon, aimed at buyers wanting more space and comfort than a family hatchback, with a notably powerful petrol engine. In the UK used-car market, it sits among established rivals such as the Mercedes-Benz E-Class and Audi A6, but offers a particularly sporty character. With a roomy cabin and boot, it can handle family duties and business travel, while its smooth V8 power makes longer journeys and overtaking feel easy. It best suits confident drivers seeking comfort and performance, rather than new drivers or people focused on low running costs; fuel use is unlikely to match smaller saloons. mycarcheck.com recorded 12 look-ups across three VINs, so the sample is small. Those checks show an average private-sale valuation of £1,700, mileage of 129,000 and 3.6 previous keepers—useful context, not a guarantee for any individual car.