Cars that rarely looked like contenders for victory have occasionally slipped through the net to become winners of world championship Formula 1 races. But which was the worst of the bunch?

Most cars that win in Formula 1 are special. The level of competition ensures that genuinely poor designs rarely get near a podium, particularly given the reliability of modern racing machines.

But sometimes a combination of luck, inspiration and/or unusual weather gives underdog cars their moment in the limelight. For this list, we looked at the overall pace of the cars, their reliability, how difficult they were to drive and the circumstances of their success.

Your host Martyn Lee is joined by Kevin Tuner and Jake Boxall-Legge.

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