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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Alfa Romeo 156 – 43% pass rate

Alfa Romeo doesn’t have a particularly strong reputation for reliability – and that won’t be helped much by an appearance here. That said, the 156 hasn’t been on sale for some years now and many of those left on the roads are old and worn out.

Lights and suspension have the highest failure rates, but that’s not unusual – it’s just that the failure rates for them are above average for the 156. 


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