25 most unreliable new cars
Some cars motor along for years without missing a beat, but others are afflicted by fault after fault. Here's our round-up of the most problematic 25 cars aged up to three years old...
We asked more than 14,000 car owners to tell us how dependable their cars had been over the previous 12 months. A third of respondents told us their car had suffered at least one fault.
To categorise the faults and rate them for seriousness, we asked car owners to pick the area where the fault occurred from one of 14 groups: battery, bodywork, brakes, engine, engine electrics, exhaust, exterior lights, fuel system, gearbox/clutch, interior trim, non-engine electrics, steering, suspension and other.
We also asked owners to tell us how long their car was off the road while it was getting fixed and how much the repairs cost. We used this information to create the unique What Car? reliability rating, which penalises models that have lots of expensive faults and rewards dependable ones with a higher score.
Our full survey results reveal the dependability of 169 models from 33 car brands.
Read the full What Car? reliability survey
Tell us how reliable your car is in the 2018 What Car? reliability survey and you could win £250
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