Until now, hybrid technology has usually been decreed too pricey for the supermini segment but Renault has attempted to democratise it with this car, the Clio Hybrid. It's a little pricier than an ordinary Clio but the French brand hopes you'll be impressed by the key WLTP figures here - 64.2mpg on the combined cycle and 98g/km of CO2, plus there's an EV option that provides limited all-electric driving range.