Stop & Start 1.4-litre petrol - Citroen’s C3 Stop & Start was launched in 2004 and it boasts one significant and unusual technical feature. When it slows to a halt at lights or in traffic, the engine automatically stops itself to save fuel. And when you want to move off again just press the throttle and the engine instantly re-starts and away you go. It’s clever, it’s green, and it works… At 49.6mpg (combined) the C3 Stop & Start isn’t quite as thrifty on fuel as its ... read more