No new extensions have been put into place in the new lockdown.
However, there are fears the original extension could lead to a rise in demand for tests and a backlog over January.
Those who had their test certificates extended in July will need to book a test before the end of January.
This means hundreds of road users will be booking tests alongside those who are traditionally due their exam at this time of the year.
Drivers who forget to book an MOT test and have their certificate expire will not be allowed to drive on the road legally.
But fines can increase to £2,500 and issued three penalty points if road users drive a vehicle deemed dangerous by an MOT test.
Jessica Potts, Head of Marketing at BookMy Garage said garages will remain open for “the majority of the Christmas break”.
She said: “We urge drivers not to leave MOT tests to the last minute.
“Particularly this year when the extension has caused demand to be significantly higher than normal since September.
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“That said, we know Christmas can be a useful time of year for many to catch up on errands and it’s useful to know that almost all our garages will be open for the majority of the Christmas break should your MOT be due.”