Advisories vs Failures: What's the Difference?
An MOT certificate can carry two very different kinds of notes. A "failure" means a fault serious enough to stop your car passing outright, and it must be fixed before the car is legal to drive on the road again. An "advisory" flags something the tester noticed that isn't yet bad enough to fail the test — worn brake pads nearing their limit, for example, or a tyre with tread close to the legal minimum. Advisories are worth taking seriously because most of them become failures at the next test if left unattended.
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