Most unreliable cars 2022

These are the UK's worst cars for reliability, based on the results of the latest Honest John Satisfaction Index. 

Of the 5,000 owner responses we received for the Honest John Satisfaction Index, this is the true hall of shame – the specific models that have left their owners most dissatisfied. Some of them will be no surprise, but some definitely will. Four premium brands make an appearance. Oh, and there’s not an Alfa Romeo in sight.

We asked owners to assess their vehicle out of 10 across a range of important areas, including comfort, practicality and ownership costs, but the following results relate strictly to how reliable their car has proven. 

These are the cars that achieved the worst average scores across the latest Satisfaction Index with a minimum of 20 individual submissions per model. Read on to see which cars have been problematic for owners…

 Most unreliable cars

 

 

Mercedes-Benz A-Class

Reliability average score: 8.45

The A-Class is an affordable hatchback that gives Mercedes-Benz ownership to the masses. Sadly, for many drivers, the ownership experience falls short of what's expected. Not only does the A-Class get one of the lowest overall scores in the Satisfaction Index but it also has the worst average score for reliability. 

Read our full Mercedes-Benz A-Class review

Mercedes-Benz C-Class Estate (2014-2021)

Reliability average score: 8.50

The C-Class Estate is a popular premium car but, like the A-Class, the ownership experience falls short of expectation with poor Satisfaction Index scores. Owners gave the C-Class Estate just 8.50 out of 10 for reliability while repair costs were heavily criticised with a disappointing average of just 7.25. 

Read our full Mercedes-Benz C-Class Estate (2014 - 2021) review

Nissan Qashqai (2014-2021)

Reliability average score: 8.58

The Qashqai is the UK's best selling crossover but feedback from owners paints a disappointing picture when it comes to all-important reliability. The Qashqai scores a lowly average of just 8.58 out of 10. Nissan launched an all-new version of the Qashqai in 2021, which will hopefully bring much-needed improvements in reliability. 

Read our full Nissan Qashqai (2014 - 2021) review

Jaguar XF

Reliability average score: 8.72

Owners praise the Jaguar XF for its performance, comfort and ease of use. However, when it comes to reliability and cost of repair, things are less impressive with the XF averaging just 8.72 and 8.22 out of 10 respectively. This sleek Jaguar is also criticised for poor fuel economy, which means the XF ownership is something of an expensive experience.

Read our full Jaguar XF review

Land Rover Discovery Sport

Reliability average score: 8.81

The Discovery Sport is one of Land Rover's best-selling models; however, when it comes to owner satisfaction, drivers say they feel short-changed. The Discovery Sport averages just 8.81 out of 10 for reliability with a long list of build quality concerns and diesel engine problems reported by owners. 

Read our full Land Rover Discovery Sport review

Jaguar XF (2008-2015)

Reliability average score: 8.85

No, your eyes do not deceive you, this is indeed a second entry for the Jaguar XF. However, in a strange twist, the older model - sold from 2008 to 2015 - proves to be slightly more reliable than the newer, more expensive XF. That said, the old shape XF gets one of the worst scores for repair costs which means problems are frequent and often expensive to put right. 

Read our full Jaguar XF (2008 - 2015) review

Peugeot 3008

Reliability average score: 8.96

When Peugeot reinvented the 3008 as a small SUV in 2017 it was hailed as a major milestone for the French carmaker, with the 3008 introducing new levels of style and quality that were missing from its predecessor. However, things are less impressive when it comes to reliability with the 1.2 PureTech petrol engine being a particular area of concern. 

Read the Peugeot 3008 review

Skoda Octavia vRS (2013-2020)

Reliability average score: 9.00

Fun, fast and practical, the Skoda Octavia vRS has all of the ingredients for a brilliant family car. Sadly, reliability appears to be missing from the mix with the previous generation Octavia vRS getting an average score of 9.00 out of 10. Skoda launched an all-new model in 2020 and, like the Fiesta, problems appear to be less prevalent. 

Read our full Skoda Octavia vRS (2013 - 2020) review

Ford Fiesta (2013-2017)

Reliability average score: 9.00

The Ford Fiesta is Britain's best-selling car but the previous-gen model is something of a mixed bag when it comes to reliability. Most complaints centre around the 1.0 EcoBoost engine, which results in the Fiesta getting a reliability average of 9.00 out of 10. Thankfully, problems with the latest model, launched in 2017, appear to be less common. 

Read our full Ford Fiesta (2013 - 2017) review

Volvo XC60 (2008-2017)

Reliability average score: 9.04

The Volvo XC60 - built from 2008 to 2017 - is the final entry in this top 10. On the face of it, the XC60's score of 9.04 out of 10 isn't all that bad. And with the earliest models pushing 14 years of age, it could be argued that wear and tear problems are to be expected. That said, owners are critical of the XC60's reliability and expensive repair costs. 

Read our full Volvo XC60 (2008 - 2017) review

Ask HJ

Costa blanker

I purchased a 55 plate Seat Altea from CarGiant on 7th of June 2009 with 83,075 miles (verified) on the clock. It seems to have been and still drives as if it is trouble free, however when carrying out an 85k oil change (as recommended by yourself) I have noticed oil at the inside of the protective tray under the engine bay. Further examination has found that there is oil all over the turbo, found at the back of the engine and out of sight from the top (under the bonnet) and only viewable if you are right under the car with the protective tray removed. As far as I can tell, this is where the oil appears to be leaking from. So far not noticed any discoloration in smoke other then it being slightly black when turbo is being used (revving passed 2k). The car has a full service history with Seat - serviced approx every 9k miles - 8 services with the distance between the last two services being 15k miles- when mileage was recorded at 79,682. The car now has 85,865 miles on it, I have put on 2,790 miles since purchase. What action, if any, can I request either Cargiant or Seat to take?
CarGiant is normally very good about this sort of thing. But first you need to get a professional opinion from a SEAT dealer before requesting CarGiant to either replace the turbo or commission its replacement. Your basic right is that the supplier has to fix any fault that could have been developing at date of sale for 6 months from date of sale.
Answered by Honest John
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