The world’s most fuel-efficient plug-in hybrid production vehicle, the Volkswagen XL1, was taken for a drive through London and unsurprisingly, it got quite a lot of attention. The Volkswagen XL1, which achieves a fuel consumption figure of 313 mpg imp (0.9 l/100 km or 261 mpg US) while emitting just 21 g/km of CO2, turned […]


