Ariel Atom 160bhp

The Atom now has a detuned version of Honda's manic i-VTEC unit, giving out 158bhp - 62bhp less than its more muscular brother. Yet the car is still ridiculously fast. The claimed sub-five-second 0-60mph time is entirely plausible, but in reality you can rarely exploit this potential on the road.

With the engine less revvy than the 220bhp unit and a low 500kg weight, first gear is short, yet snatching second is no hassle with the slick five-speed box. Suspension is now non-adjustable, the tyres are road rather than track-biased, there's less grip and the ride is still far from comfortable, but the 160 does feel more civilised than the 220. At less than ΂£20,000, it represents fine value for money. As a car for summer fun, there are few better options.