The AUDI A4 (2001-05) 4DR SALOON 1.9 TDI 115 SPORT is a four-door diesel family saloon: an alternative to a hatchback, aimed at buyers wanting a comfortable car for everyday use. In the UK used market, it sits among premium-badged rivals such as the BMW 3 Series and Mercedes-Benz C-Class. Mycarcheck.com has recorded 30 checks covering 22 different VINs, a useful snapshot, not a full-market survey. Across checks, the average mileage was 164,000, with annual use averaging 6,000 miles; there were six keepers on average. The average private-sale valuation was £400, so condition and history matter when judging an example. The 1.9 TDI is valued for economical long-distance motoring, and Sport trim adds a purposeful look. It suits commuters, couples and small families needing a boot and rear doors. Against mainstream saloons, this A4 brings an upmarket badge and composed road manners. Check service records, mileage and wear carefully before buying.