Lamborghini Gallardo (400g/km; 16.6mpg)
Lamborghini Gallardo (400g/km; 16.6mpg) It’s the first Lamborghini in our list, but you’ll probably guess that Lambo’s baby model won’t be the last. Having said that, it’s a lot less thirsty than the last ‘baby’ Lamborghini, the Jalpa.