The one month rule
If your MOT expires on 14 March, you can test it from 15 February and the new certificate still runs to 14 March the following year. You lose nothing, and you gain time to get any repairs done before the old certificate runs out.
Testing earlier than that
Test more than a month early and the new expiry is twelve months from the day of the test, so the days between are simply gone. There are good reasons to do it anyway, such as selling the vehicle, but it is a choice worth making deliberately.
Bring the old certificate
To keep the existing renewal date the test station needs to know it. Take the current certificate, or make sure the garage checks the record.
Check your own vehicle
See the MOT expiry date and full test history for any UK registration.
Sources
Related guides
- When is my MOT due?
How to find your MOT expiry date, when the first test falls due, and how to be reminded before it runs out.
- How much does an MOT cost?
The maximum a garage may charge, what the retest costs, and why most places charge less than the cap.