2016 Caterham Seven 420R

A 2016 Caterham Seven 420R on the desirable S3 chassis, showing just 2,136 miles — effectively barely run in. The 420R sits in a sweet spot within the Seven range, pairing a 2.0-litre Ford Duratec engine with a supercharger to produce 210 bhp in a car that weighs little more than half a tonne. On paper that translates to roughly 400 bhp per tonne, which in practice means relentless acceleration and the kind of mechanical immediacy that no modern supercar can replicate.

At this mileage, the car has seen minimal wear, making it an appealing prospect for someone who wants a near-new Seven without the current list-price premium. The S3 chassis is the wider-bodied variant, offering slightly more cockpit room than the earlier SV or standard S3 without sacrificing the essential lightweight character. Priced at £31,000, it undercuts a new equivalent by a useful margin while giving very little away in condition.

The 420R is one of the more focused road-legal Sevens short of the 620 models, and low-mileage examples on the S3 chassis tend to hold their value well. A serious driver's car with negligible depreciation risk.