BMW Z1 (1989-91)
It took a while for the wider classic market to cotton onto Munich’s brilliantly barmy roadster. If you’d bought one back in 2002, prices would have still been heading in the direction of the Z1’s opening doors – it was still (slowly) depreciating and the lack of right-hand drive limited its appeal with the wider market. But values have started creeping back up again over the past decade, particularly since 2012 on the back of an increasingly buoyant market for 1980s performance cars. You’re now looking at around £30k for a good one – nearly double what they
were worth 10 years ago.