Understanding MOT advisories

An advisory is something the MOT tester noticed that isn't serious enough to fail the test but may need attention soon, for example a tyre close to the legal tread limit or brake pads wearing thin.

Since 20 May 2018 the MOT also records minor defects. A vehicle with minor defects still passes, but the defects should be repaired as soon as possible.

Do I have to fix advisories?

There's no legal requirement to fix an advisory before driving, but advisories often become failures at the next test. You must still keep the vehicle roadworthy at all times, so worn tyres or brakes should be dealt with before they become illegal or unsafe.

Why advisories matter when buying a used car

Repeated advisories for the same item across several years can show that maintenance has been put off. Advisories for corrosion, oil leaks or suspension components can point to future repair costs.