The MoT Files: Bottom 50 MoT performers

Our MoT data reveals a lot of information about the specifics of common MoT failure causes, whether simple bulb failures or more complex and dangerous problems, like worn out brakes or excessive rust. But what are the UK’s worst overall cars for the Mot? 

We list the 50 models that have the lowest overall pass rates in the country. We’ve put a filter on so only models of which more than 5000 were tested appear, to filter out rare cars or particularly old models. 

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Citroen ZX – 43% pass rate

The ZX is, arguably, transitioning into modern classic car territory. There are still a few thousand on the road, though, and many will be treated as cheap, everyday runabouts. Unusually, the suspension on the ZX overtakes the usual lighting and electrical problems as the most common cause of failure.

This can’t be attributed to a complex suspension set up, because the ZX didn’t have one – it used a fairly regular arrangement – but given that most 1990s cars on the roads today will have covered some serious miles it’s little surprise that suspension wears out. 


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