The RSA says it's made Gardaí aware that parts of the National Car Test have been suspended.
The decision was made yesterday due to concerns over cracks in the lifts that are used to check underneath cars.
All 47 NCT centres around the country are affected, and a full audit is underway to find out the extent of the problem.
CEO of the NCT Grant Henderson says customers will have to come back when the lifts are working again.
"The test will be complete with the omission of the underbody inspection which will be conducted at a later date when the lifts are returned to use.
All other elements of the test will be carried out as normal. There will be no additional fees incurred as part of this process."