
MOT Retest Rules: What Happens After a Failure?
Failed your MOT? Learn what the result means, when a retest may be free or reduced-price, what happens if repairs are needed, and when it may be unsafe to drive.
Ashton's Garage
Practical mot advice from Ashton’s Garage.

Failed your MOT? Learn what the result means, when a retest may be free or reduced-price, what happens if repairs are needed, and when it may be unsafe to drive.

Servicing your car before an MOT is not always necessary, but it can be sensible when maintenance is due or you have noticed a problem. Here is how to decide what your car needs before its test.

A few sensible checks before your MOT can help you spot obvious problems, avoid preventable failures and understand when your car needs professional attention.

Think your car has been failed unfairly? Find out how the UK MOT appeal process works, what to do before authorising repairs and when professional advice can help.

A major MOT defect means the vehicle has failed because the tester found a problem that could affect safety, the environment or compliance. Here is what the result means and what to do next.

A dangerous MOT defect means the vehicle has failed because the issue poses a direct and immediate road-safety risk or affects the environment. Here’s what to do next.

A failed number plate light can affect your MOT result. Find out what the light does, what you can check safely and when a garage should investigate the fault.

A noisy exhaust can lead to an MOT failure, but the outcome depends on why it is noisy and whether the exhaust is secure, leaking or affecting emissions. Here is what to check before your test.

A cracked windscreen does not automatically mean an MOT failure. The result depends on the crack’s size, position and effect on the driver’s view, as well as whether other windscreen defects are present.

Yes, worn, damaged or contaminated brake pads can contribute to an MOT failure. Find out what testers look for, what an advisory means and when your brakes need professional attention.

Worn, damaged or incorrectly fitted tyres can lead to an MOT failure. Learn what the tester checks, what an advisory means and when your car should be inspected before driving.

A dashboard warning light does not automatically mean an MOT failure. Find out which warning lights may be checked during the MOT, what an illuminated light could mean and when professional advice is sensible.