posted 5 years ago

Complex Electronics make cars prone to ‘breakdowns’

Expensive repairs on the increase

Automotive specialist Warranty Direct say that increasingly complex electronics are making cars more prone to expensive breakdowns. Electrical faults have increased by two thirds (66%) over the last five years, according to the firm’s unique Reliability Index ( and analysis of cars aged over three years. Electrical faults are the most common across all cars on Warranty Direct’s database of 50,000 policies, with almost a quarter (23%) needing a repair every year.

Warranty Direct managing director, David Gerrans said “as automotive technology continues to advance, cars get more and more complex. Nowhere is that more so than in the field of computer technology and other electronics. But while these advances can undoubtedly improve the performance and safety of cars, they also have a knock-on effect on how often they fail and how much it costs to repair them. Workshops now need advanced diagnostic tools to safely and effectively fix cars and, in some cases, it appears only franchised dealers can access some of the systems on newer cars, meaning that the customer is hit with a higher labour rate bill.”

Luxury and Premium Cars most likely to fail

Luxury and premium cars are among the most likely to suffer electrical faults, relays and alternators are the most likely components to break and the newer electronic innovations like parking sensors are typically amongst the many faults reported.

If you want the most reliable brand for electrics then Subaru, Mitsubishi and Daihatsu take the top three spots. Suzuki is in fourth place followed by Mazda, Lexus and Toyota. Alfa Romeo is in eighth place for most reliable, Nissan is ninth and Jeep is number ten.  Among the cars most likely to feature a failure are luxury and premium brands, like Porsche and Bentley, but Renault is also unfavourable and so is Saab. Looking at figures, overall Subaru electrics cost an average of £450.67 to fix. At the other end of the scale, Renault is the brand most likely to suffer a fault, with more models suffering a fault each year  (approximately 38%) but a lower repair cost of £264.33.

For piece of mind there is the option of Warranty Direct cover  which starts from as little as £15 a month. For more information or for a quote, go to or