What Car has revealed its latest reliability ratings for 159 car models spanning 31 brands in the UK.
A total of 18,284 car owners who have owned their vehicle for less than four years were surveyed to collate the data.
According to the research, around 30 per cent of motorists had suffered at least one fault in the past 12 months.
Steve Huntingford, editor of What Car, said: “Reliability is a huge consideration for any prospective car buyer, as your car is likely to be your second biggest monthly expense after mortgage or rent payments.
“You want your car to last and you don’t want to have to fork out huge amounts to fix faults and keep it running.
“Our annual survey has shown that it is Japanese models that continue to dominate the top of the reliability rankings, both for car model and brand rankings.”
Least reliable cars of 2018
- Tesla Model S (2013 – Present) – reliability ranking – 50.9 per cent
- Land Rover Range Rover (2013 – present) – reliability ranking – 67.3 per cent
- Ford Edge Diesel (2016 – present) – reliability ranking – 70.7 per cent
- Land Rover Range Rover Evoque (2011 – present) – reliability ranking – 73.2 per cent
- Land Rover Discovery Sport (2015 – present) – reliability ranking – 74.7 per cent
The Tesla Model S came out worst in the survey with owners reporting issues with the bodywork and electrical systems.
A Tesla spokesperson said: “Only 28 Model S owners responded out of a total of 18,000 car owners surveyed by What Car.
“That’s less than 0.3 per cent of UK Tesla owners, so this survey is statistically meaningless.
“The results of this survey are also at odds not only with our internal figures showing customer satisfaction scores for Model S and X at well over 90 per cent, but with statistically valid surveys like our Net Promotor Score and Consumer Reports customer satisfaction survey, which we’ve topped every year since 2013, with 90 per cent of Tesla owners saying they would buy the same car again – more than any other brand.”
Overall, half of the owners reported a fault, with non-engine electrics (21 per cent) being the most common issue followed by the suspension (17 per cent) and the car’s sat nav (13 per cent).