Electric Vehicle Suspension Defects Trigger Alarming MOT Failure Rates
Thousands of electric vehicles across the United Kingdom are facing significant risks of MOT test failures due to widespread suspension defects, according to new automotive research. The study reveals that suspension problems now account for nearly four out of every ten MOT failures nationwide, creating substantial road safety concerns for EV owners and other motorists.
Hidden Mechanical Faults Emerge as Primary Failure Cause
The comprehensive research indicates that 38 percent of all failed MOT tests can be directly attributed to suspension issues that often go unnoticed by drivers during regular vehicle operation. These defects have become the most common reason for electric vehicles specifically failing their annual roadworthiness assessments.
Craig Sprigmore, retail director for the UK and Ireland at HiQ, emphasized the seriousness of the situation: "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."
He further explained the particular danger of suspension problems: "Drivers may not notice any change when driving, yet these faults are a serious safety risk that can compromise vehicle stability and handling."
Common Suspension Defects Identified in Research
The study documented several recurring suspension problems that contribute to MOT failures:
- Broken or damaged springs that affect vehicle height and stability
- Worn suspension components that reduce shock absorption capacity
- Leaking shock absorbers that compromise handling and braking performance
- Damaged suspension joints and connections that create safety hazards
These mechanical issues directly impact critical vehicle functions including stability during cornering, braking efficiency, and overall handling characteristics, creating potentially dangerous driving conditions.
Additional MOT Failure Categories Revealed
While suspension defects represent the most significant failure category, the research also identified other common problem areas:
Lighting and electrical systems accounted for numerous failures, with issues ranging from faulty lamps and indicators to misaligned headlights and various electrical malfunctions that compromise visibility and signaling capabilities.
Tyre and brake components also featured prominently in failure statistics, with problems including worn tread patterns, structural damage to tyres, and deteriorating braking components that reduce stopping power and control.
Expert Recommendations for Vehicle Maintenance
Sprigmore urged all vehicle owners, particularly those with electric models, to prioritize regular maintenance and safety checks: "Regular vehicle maintenance is essential for preventing these hidden faults from developing into serious safety issues. Drivers should take advantage of free safety checks at our centers."
He emphasized the preventive benefits of early detection: "These checks can spot problems early, reduce the risk of MOT failure, and improve road safety for everyone on UK roads."
The suspension defect findings follow HiQ's previous research into potholes and deteriorating road conditions, which revealed that more than one-in-four tyre replacements in the UK directly result from poor road surfaces. This connection suggests that road quality may contribute to accelerated suspension wear and component failure.
The research highlights the importance of proactive vehicle maintenance, particularly for electric vehicle owners who may be unaware of developing suspension issues that could lead to MOT failure and compromise road safety for thousands of motorists across the country.
