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Described by some as the greatest hot hatch there’s ever been, and widely revered as a pinnacle for Peugeot, the 205 GTi was available as either a 1.6-litre or a 1.9-litre.
As the oldest car on the list, numbers are dwindling - latest figures suggest there’s as little as 1400 left on the road.
It’s been in serious demand for quite a while too, so prices are already spiking. The cheapest non-project example on PistonHeads right now is £4250, so won’t be around for long.
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Being one of the only cars left in production on Cap HPI’s list has got to mean something, although it’s been a while since Audi shoehorned a 3.2-litre V6 under the TT’s bonnet.
With models such as the TTS and TT RS following, the subtle 3.2 V6 is easily forgotten, although its cult appeal is now beginning to spread.
The Mk1 TT has just about reached the bottom of the depreciative curve, with long-legged examples on PistonHeads for well below £2000. V6 examples start at slightly below £4000, though.
Find out more: Audi TT | Used Car Buying Guide
History has been kind to the Z3 - at launch, it was dismissed as having style, but little in the way of driving thrills to back it up with.
But fast-forward 21 years and the BMW is far daintier and lighter on its feet than many of the flappy fabric and folding hard-top-models that have arrived since.
While 2.8-litre versions are the pick of the bunch, lower-powered versions are where the rock-bottom prices can be grabbed. £2750 is the cheapest on PistonHeads, and prices are guaranteed to rise in time for the summer.
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Face it - it was always going to happen. Citroën’s big barge from the mid-2000s sold in predictably tiny numbers but had the comfort and style to guarantee it modern classic status from birth.
Latest figures suggest there are 622 left on UK roads, which is surprising, given that the car peaked at less than 1000. Exclusive-trim, HDi-engined automatics are the most common.
The car’s scarcity is such that there are just two examples for sale on PistonHeads, priced at £4950 and £6740 respectively, with the cheaper of the two in rarer Lignage trim.
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The last Mini, produced by Rover in its dying years between 1986 and 2000, is another on the list, joining its numerous predecessors produced across the rest of its 41-year production run as a modern classic.