The AUDI A4 (2001-05) 4DR SALOON 2.5 TDI 180 QUATTRO SPORT is a premium mid-size four-door saloon, aimed at drivers wanting comfort and refinement beyond a mainstream family car. In the UK used market, it sits among executive saloons, with a powerful diesel engine and four-wheel drive giving it a capable character. Its roomy cabin and relaxed road manners make it a sensible choice for longer commutes, motorway journeys and families, while quattro traction can be reassuring in poor weather. Mycarcheck.com has recorded 168 checks across 77 VINs, a sample; cars checked averaged 131,000 miles and 4,000 miles a year. This A4 stands out from rivals such as the BMW 3 Series and Mercedes C-Class through its secure all-weather feel and flexible diesel performance. Checks show an average of just over six previous keepers and a £400 average private-sale valuation; these are historical sample figures, not a quote or guarantee.