The automatic MOT extension will be revoked from 1 August.
Motorists and riders must get their vehicle tested if its MoT has lapsed since March.
RAC head of policy Nicholas Lyes said, “Extending MOT tests was the right short-term measure after a number of garages closed when all of us were asked to stay at home.
“But with many more garages now open – including all of those that are part of our Approved Garages network – and with the easing of movement restrictions, it makes perfect sense that cars due their MOTs are put through the test on time.
“If the extension were to continue for very much longer there is a risk of many more unroadworthy vehicles being driven, especially as traffic volumes increase – which is clearly in nobody’s interests.”
RAC research suggests drivers are very wary about making use of the six-month extension and driving cars that have gone past their MOT due date.
Just one-in-seven (14%) surveyed said they were intending to do so, with three times that proportion (44%) plan on getting their car checked as normal.
“Drivers shouldn’t be worried about getting routine work completed as all garages that are part of our network have taken steps to protect both customers and staff, with every one signing up to our COVID-19 code of conduct. In addition, around seven-in-10 offer a Collect-and-Return service, meaning in many cases drivers don’t even need to leave their own homes,” he added.