UK’s most unreliable new cars revealed

Range Rover Sport diesel tops list of least reliable while Nissan features twice with its petrol and diesel Qashqai

UK’s most unreliable new cars revealed
With a score of just 14.5 per cent, the Range Rover Sport diesel tops the list of unreliable cars.

The most unreliable cars in the UK have been revealed by What Car?’s Driver Power reliability survey.

The survey, which collected data from 14,000 car owners in the UK about how many faults their vehicle has had over the past 12 months, found that a third of drivers had experienced at least one fault in the past year.

The study collected results from a total of 169 models from 33 different car brands.

Faults were categorised and rated based on their seriousness from one of the 14 groups.

Owners were asked to provide information on how long cars were off the road while they were getting fixed and how much they cost to repair.

Car ratings for models with a lot of expensive faults are penalised while dependable ones are rewarded with a better score.

1. Range Rover Sport diesel

With a score of just 14.5 per cent, the Range Rover Sport diesel tops the list of unreliable cars.

Two-thirds of diesel Range Rover Sports had problems, spanning a wide range of areas, with the most serious being with the gearbox, drivetrain, engine and suspension.

Not all cars were fixed under warranty and some were off the road for more than a week.

2. Volvo XC90

Scoring 22.6 per cent, just over half (53 per cent) of owners reported faults with their XC90.

Many were non-engine electrical and software system issues that could not always be fixed with one trip to the garage but all work was carried out under warranty.

3. Nissan Qashqai petrol

The Qashqai petrol scored 28.9 per cent.

56 per cent of petrol Qashqai owners experienced faults with the car, with batteries, bodywork and non-engine electrics topping the long list of problem areas.

4. Fiat 500X

The Fiat 500X was scored 32.3 per cent, with 33 per cent of owners reporting problems.

The most common issues with the 500X were related to bodywork and electrical issues.

5. Jaguar XE

Scored 36.7 per cent, it was non-engine electrical issues that were noted as the most common issue.

Other problems included bodywork, engine, fuel system, steering, and suspension.

In total 44 per cent of owners experienced problems with the car.

6. Jeep Renegade

43 per cent of drivers reported a fault with the car, focusing mainly on serious issues such as the engine, engine electrics, and braking systems.

The Renegade was scored 42.1 per cent.

7. Land Rover Discovery Sport diesel

The Land Rover Discovery Sport diesel was scored 43.8 per cent.

40 per cent of cars reported faults mostly relating to bodywork and interior trim, and there were also some engine and non-engine electrical issues.

8. Nissan Qashqai diesel

Joining it’s petrol sibling in the top ten least reliable cars, the diesel Qashqai achieved a score of 44.2 per cent.

Almost half (49 per cent) of diesel Qashqai owners experienced faults, with the most common being non-engine electrical systems and around 20 per cent had faulty batteries.

9. Mercedes-Benz E-Class

Scored 46.1 per cent, the E-Class was let down by issues with its interior and electrics.

Almost a quarter (24 per cent) suffered a problem with the vehicle.

10. Mercedes-Benz B-Class

The Mercedes-Benz B-Class scored 46.2 per cent.

Around 35 per cent of B-Class’ experience faults with the most important problem areas being engine, engine electrics and gearbox/clutch, rendering the cars undriveable and taking more than a week to put right.

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