The changes will come into effect from 20 May 2018. It will be a rolling 40 year date. Starting with vehicles first registered pre 1978
If a vehicle has a power to weight ratio of more than 15% in excess of its original design, unless such a modification took place before 1988 it will not be MoT exempt. This will effect Tri Greeves (or any other larger engine conversion) that are built after 1988. Like wise 'Q' plate vehicles will not be exempt.
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