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It’s always nice to know if there are cars that should be on your cars to avoid list if you’re shopping for a new or used car. This list of cars brought to us by Car Wow is a great compilation of the most unreliable cars of the last decade. For the past 10 years, these models have given owners the most problems and had the highest cost to repair.

A red 2013 Bentley Continental GT V8 drives quickly down a forest road. This model made the most unreliable cars to avoid list and has potentially high repair costs.
2013 Bentley Continental GT V8 | Bentley

In the video below, you’ll see 15 car and SUV models. They make up the least reliable vehicles for the past 10 years. So we’ve taken all of the cars of that list to give you this condensed list. These are the most unreliable cars of the last decade, ‘named and shamed.’

Collecting the data

In order to get this data on the most unreliable cars of the last decade, Car Wow got in tough with Warrant Wise. They took the probability of something going wrong with a particular model and multiplied it by the average cost per claim to come up with this list of cars to avoid. In addition, the highest claim filed within the last 10 years also adds to the data that gives a car a spot on this dreaded ‘named and shamed’ list. Each cost is listed in pounds due to the fact that Car Wow is British. So each of these prices is even higher if they’re projected in U.S. dollar amounts.

Cars to avoid

Of all the cars out there, it’s wise to choose one that doesn’t make it onto a list like this. While there are some compelling models here, the reliability factor will take them down several notches. Without further ado, let’s run through the list.

A Tesla Model S electric car is on display during 2020 Beijing International Automotive Exhibition
The Tesla Model S | VCG/VCG via Getty Images

First up in the 15th slot is the Tesla Model S. This car to avoid has issues with its electrical system. Due to its being an electric vehicle, this isn’t exactly surprising. The average cost of repair is 1,322 British Pounds. The most expensive repair reported cost £4,402 for air suspension problems. Next on the list is the BMW M4. This model has brake issues with an average cost of £1,668. The most costly repair dealt with the infotainment system and cost £3,995.

The MBW M4 like this sporty gray one parked on pavement made the list of cars to avoid according to CarWow
2016 BMW M4 GTS | BMW

More cars with a lot of problems

Next on our list of cars to avoid is the Jaguar XJ. This car has fueling system issues that cost an average of £1,179. Engine faults, however, caused the most expensive repair that cost an owner £9,616.

This Jaguar XJ is on the list of most unreliable cars from the past 10 years with potentially high repair costs.
Jaguar XJ | Jaguar Land Rover

The next car on the list of most unreliable cars from the last decade is the Audi A7. This German luxury car has gearbox issues. Its average cost to repair in British Pounds is £2,199. However, gearbox issues can cost up to £11,222 to make right.

 this Aud A7 is on the list of cars to avoid
Audi A7 | Audi

Last on the list and coming in at the top spot for the most unreliable car is the Bentley Continental GT. This car has electrical system problems, too, which cost an average of £2,299 to repair. But if you have engine problems with the Bentley Continental GT it can cost up to £9,616. Of course, if you can afford a Bentley, you probably aren’t super concerned with the cost of your repair bill. Still, it’s on the list as the most unreliable car of the past 10 years.


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