Forget fuel economy: The winning and losing cars at £1-a-litre

As pump prices plummet, buyers can once more afford to put driving pleasure before the sensible stuff. Driving picks our winners and losers in the £1-a-litre world...
driving tests citroen c4 cactus airbump

Driving tests the Citroën's Airbump protection

The new Citroën C4 Cactus is the world's first bubble-wrapped car. Driving puts it to the test.