The AUDI A4 (2001-05) 4DR SALOON 1.9 TDI 130 QUATTRO SE is a four-door, compact executive saloon: a smart, more premium alternative to mainstream family cars, competing with the BMW 3 Series and Mercedes-Benz C-Class. Its understated styling suits buyers wanting a traditional boot rather than a hatchback or SUV. The 1.9-litre diesel is known for strong long-distance economy and useful pulling power, while Quattro four-wheel drive adds reassuring grip in poor weather. It makes a capable commuter and motorway car, and can suit small families needing comfort and luggage space. Compared with front-wheel-drive rivals, its extra traction is a distinctive advantage, though age and running costs merit attention. Mycarcheck.com has 111 look-ups covering 41 VINs, offering a snapshot of this model. Checked examples averaged 189,000 miles, around seven previous keepers and 5,000 miles a year; the average private-sale valuation was £300, which is sample data, not a current asking price.