Used sports cars that should go up in value

The article surveys used sports cars with potential value growth. It begins with the Alfa Romeo 75 (1987-1989), noting the Verde V6 and guide prices around £10,000, and the Audi TT (Mk1, 1998-2006), where well-preserved examples start near £2,000. The BMW E24 6 Series (1976-1989) is cited with the desirable 635 CSi editions from about £23,000. Mazda RX-8 (2003-2012) is described as ending the rotary era, with prices from roughly £2,300 and rising. Jaguar XK8 (1996-2006) and XKR variants are shown from about £3,500. BMW M3 E46 (2000-2006) closes the list, illustrating a cyclical market even as production ends.