Crossfire SRT-6 Roadster

Its badge stands for Street and Racing Technology, and the supercharged V6 in this automatic-only vehicle produces 330bhp - a 115bhp increase over the standard Crossfire. The 0-62mph time is cut by more than one second, to 5.3 seconds. Stiffer suspension and uprated brakes help keep everything under control.

External changes include a fixed rear wing, a deeper front chin spoiler and fresh alloy wheels. The sporty theme is continued inside, with heavily bolstered leather seats which are emblazoned with the SRT-6 logo.

However, all this extra kit comes at a high price: ΂£8,100 more than the standard automatic version, in fact. Also, the addition of a supercharger to the already thirsty V6 results in 23mpg economy. The Crossfire has always made more sense as a drop-top than a coupί¿½, but the SRT-6 will be too focused for many buyers.

The standard model does not lack outright pace, and arguably looks better than the latest variant, which leaves the SRT-6 for hardcore Chrysler fans only. Those who do take the plunge will get a rare and rapid car, but its rivals are more refined and sophisticated.