The AUDI A4 (2001-05) 4DR SALOON 1.9 TDI 130 QUATTRO SPORT is a compact, premium four-door saloon, sitting among established alternatives such as the BMW 3 Series and Mercedes-Benz C-Class. Its smart, understated styling and diesel engine make it a more purposeful choice than a basic family runabout. In mycarcheck.com data, this model attracted 375 look-ups covering 155 different VINs, a useful sample of used-car interest. Checks recorded an average 177,000 miles and nearly six previous keepers; average annual mileage was 6,000. The average private-sale valuation shown was £300, so treat it as a data point, not a guaranteed asking price. The A4 suits commuters and small families seeking comfort for daily journeys and motorway trips. Quattro four-wheel drive adds reassurance in slippery conditions, while the 130 TDI offers useful pull and diesel economy. Against rivals, it is solid and discreet, but age and mileage make history checks essential before purchase.