by An annual car reliability study was conducted in the United Kingdom. Experts from the insurance company Warrantywise determined which cars break down most often and are the most expensive to repair. This was reported by Focus.
The study analyzed data on 200 car models up to 10 years old. The frequency of breakdowns and the cost of repairs were taken into account when compiling the ranking. Based on this, a car reliability index was calculated, and the 15 most problematic models were selected. It was found that premium cars are less reliable. Problems with automotive electronics are most often noted.
Least Reliable Used Cars on the Market
15. Tesla Model S (2012-2022). Reliability Index — 33.5%
Average repair cost — $1,174, maximum — $5,152. Most frequent failure — central lock failure.
14. Ford Ranger (2012-2022). Reliability Index — 33.4%
Average repair cost — $1,458, maximum — $16,378. Most frequent failure — exhaust gas recirculation valve failure.
13. Audi A7 (2012-2019) Reliability Index — 33%
Average repair cost — $2,845, maximum — $13,135. Most frequent failure — injector failure.
12. Mercedes-Benz S-Class (2012-19) Reliability Index — 32.8%
Average repair cost — $1,666, maximum — $19,050. Most frequent failure — exhaust system sensor malfunction.
11. Peugeot RCZ (2012-15) Reliability Index — 32.2%
Average repair cost — $1,217, maximum — $7,715. Most frequent failure — turbo failure.
10. BMW M5 (2012-19) Reliability Index — 30.8%
Average repair cost — $2,487, maximum — $11,850. Most frequent failure — suspension issues.
9. Mazda CX-5 (2012-22) Reliability Index — 29.6%
Average repair cost — $2,088, maximum — $6,760. Most frequent failure — diesel turbo failure.
8. Bentley Continental GT (2012-18) Reliability Index — 29.1%
Average repair cost — $2,618, maximum — $7,290. Most frequent failure — electrical equipment issues.
7. Audi Q7 (2012-20) Reliability Index — 25.7%
Average repair cost — $1,574, maximum — $10,200. Most frequent failure — electrical equipment issues.
6. Porsche Cayenne (2012-18) Reliability Index — 24.9%
Average repair cost — $750, maximum — $7,450. Most frequent failure — electrical equipment issues.
5. BMW X6 (2012-19) Reliability Index — 23.6%
Average repair cost — $2,434, maximum — $11,250. Most frequent failure — suspension issues.
4. Porsche Panamera (2012-19). Reliability Index — 23.4%
Average repair cost — $1,893, maximum — $12,630. Most frequent failure — electrical equipment issues.
3. Range Rover Sport (2012-19). Reliability Index — 23.1%
Average repair cost — $2,070, maximum — $26,200. Most frequent failure — suspension issues.
2. BMW M3 (2012-19). Reliability Index — 21.4%
Average repair cost — $2,485, maximum — $14,200. Most frequent failure — throttle issues.
1. Range Rover (2012-19). Reliability Index — 20.2%
Average repair cost — $1,880, maximum — $28,000. Most frequent failure — suspension issues.
