The push towards electric cars could be contributing to a rise in MOT failures caused by hidden suspension faults, which have been causing breaches in road safety across the UK.
New research has revealed that nearly four out of 10 MOT failures in the UK have been linked to hidden suspension problems that many drivers rarely check, but are the most common reason electric vehicles fail the test.
The study found that 38 per cent of failed tests were linked to suspension issues such as broken springs, worn components and leaking shock absorbers.
Experts have warned that these faults are often difficult for drivers to diagnose and go unnoticed until mechanics inspect the vehicles.
Craig Sprigmore, retail director UK and Ireland at HiQ, said: “Many drivers expect MOT failures to come down to simple issues like tyres or lights, but what we are increasingly seeing are hidden mechanical faults that develop slowly and go unnoticed until inspection day.
“Suspension problems are a prime example. Drivers may not notice any change when driving, yet these faults are a serious safety risk.”
Electrical and lighting problems were the second most common cause of MOT failure, appearing in 37.4 per cent of cases.
Meanwhile, brake issues were found in 26 per cent, tyre problems in 25.6 per cent, and steering faults in almost one in four failures.
Due to EVs being heavier, it puts more pressure on suspension components in vehicles
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Experts explained how several factors may be contributing to the rise in suspension faults by putting extra strain on suspension and steering systems.
Mr Sprigmore said: “Heavier vehicles, particularly electric models, put more strain on suspension systems. With longer service intervals, problems are less likely to be spotted before MOT day.
“It is no surprise that suspension faults are now the leading cause of MOT failures, especially as electric cars now account for more than 20 per cent of new car sales in the UK.”
Experts detailed how electric cars were more at risk of MOT failures due to suspension problems
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The study follows previous HiQ research, which identified that more than a quarter of tyre replacements in the UK are caused by potholes or damaged road surfaces.
Worn or damaged suspension can also worsen tyre wear and affect braking performance, making it a serious safety concern.
Suspension faults affect a car’s stability, braking and handling, while electrical problems, worn tyres, and braking faults are also frequent causes of failure.
Four out of 10 MOT test failures were due to suspension issues
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Mr Sprigmore urged drivers not to neglect maintenance and emphasised how regular vehicle maintenance “is essential”.
He said: “Drivers should take advantage of free safety checks at our centres. These checks can spot problems early, reduce the risk of MOT failure, and improve road safety for everyone.”
With hidden suspension faults now the leading cause of MOT failures, experts have urged drivers to be vigilant, adding that early detection can prevent accidents, costly repairs, and failed MOT tests.