The AUDI A4 (2005-08) RS4 2DR CABRIOLET 4.2 QUATTRO 420 is a rare, high-performance, four-seat convertible rather than an everyday family saloon. It combines open-top motoring with all-wheel drive and a powerful V8, placing it firmly in the premium performance-car corner of the UK used-car market, not the budget runabout class. Mycarcheck.com has recorded 553 look-ups across 192 different VINs, giving a useful snapshot of interest in this specialist model. Checks show an average private-sale valuation of £10,500 and average recorded mileage of 95,000 miles; the typical car has had around six previous keepers, so history deserves close attention before purchase. With 2,000 average miles driven annually in the data, it may suit enthusiasts after occasional weekend trips and open-air drives, rather than high-mileage commuters or families needing easy access. Compared with the BMW M3 Convertible, the RS4 is notable for all-weather grip and thrilling performance. Running costs may be substantial, so check the car's condition and maintenance history carefully.