New car user-chooser favourites Golf Mk 4 GTi and Audi A3 1.8 T Sport are top used choices, too. Buyers love them as high status alternatives to mainstream choices. Cars in good condition with full history sell as quickly as they go. A 150 bhp GTi 1.8T on 98S with 22,000 miles is £11,000; a 99T 15,000-mile A3 1.8T Sport, £14,000.