Step into the carbon fibre passenger seat of the new Renault 5 Turbo 3E. Ignore the wonderfully retro dashboard graphics and the rally-style handbrake sprouting from the centre console, and look into your footwell.

Renault is pitching the 5 Turbo 3E as a "mini-supercar" and backs up that claim with its length-to-width ratio of 2.01. That’s hardly a statistic that’s in the lexicon of car enthusiasts, but if you’re creating new genres you have to draw comparisons where you can.