Caterham Seven.
What to Check Before Buying.

The Caterham Seven is a lightweight, bare-bones sports car built for pure driving thrills on road and track. Most are used sparingly as weekend toys, but this also means long periods of standing which can create their own problems. Age, exposure to the elements, and enthusiastic driving all take their toll, so buyers need to look beyond the fun factor and check for corrosion, weatherproofing issues, and signs of hard use.

The average used car has 3+ known model faults the seller won't mention.