Most common MOT failures revealed

Lighting and signalling faults common culprits, analysis shows

Most common MOT failures revealed
Lamps, reflectors and electrical equipment comprise the greatest amount of MOT failures, followed by brakes and suspension. Image: Bigstock., a comparison site where service providers quote for MOT, has analysed a total of 29,640,484 MOT records from the Vehicle Operator and Services Agency (VOSA – 2015) to identify the reasons for failure for vehicles undergoing their first MOT.

Scott Hamilton, managing director of, comments: “Our data shows that the main failure categories are lighting and signalling, including faults such as failed bulbs and misaligned headlights; brakes; tyre damage, as well as tyre wear; drivers view of the road, including windscreen damage, windscreen wiper faults, windscreen washer not working and missing, or faulty mirrors.

“The good news is that our research shows the majority of MOT failures can be fixed quickly and cheaply by motorists, before they book their vehicle in for an MOT.

“Many of these faults can be picked up by regular maintenance and can be detected by the owner, by a very simple walk-around inspection of the car.

Reasons for failure
Lamps, Reflectors & Electrical Equipment 19%
Brakes 14%
Suspension 12%
Driver’s view of the road 11%
Tyres 10%
Exhaust, fuel and emissions 8%
Steering 7%
Seatbelts and restraint systems 5%
Body structure and general items 5%
Registration plates and VINs 4%
 Road wheels 2%
 Items not tested 2%
 Towbars 1%

“If motorists take some time to check their vehicle over before undergoing an MOT, they can save money and improve the chance of their vehicle passing first time.

“However, many of our service providers offer a Vehicle Health Check free of charge.

“If they tick this option on our site, we can get local service providers to check the vehicle and help increase the chances of passing.”

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