Question to the Department for Transport:

To ask the Secretary of State for Transport, what estimate his Department has made of the potential number of unroadworthy vehicles in the event that MOT tests were required only every two years.

The Department has made no proposal or decision to change the requirements for MOT tests. Should any such proposal be made, we would produce an assessment of the effects of the change.

DVSA publish statistics on the number of vehicles that pass and fail MOT tests and the reasons for failed tests:-

https://www.gov.uk/government/statistical-data-sets/mot-testing-data-for-great-britain