These tables give data for the following classes of vehicles:
class 1 and 2 vehicles - motorcycles
class 3 and 4 vehicles - cars and light vans up to 3,000kg
class 5 vehicles - private passenger vehicles with more than 12 seats
class 7 vehicles - goods vehicles between 3,000kg and 3,500kg gross vehicle weight
All figures are for vehicles as they were brought in for the MOT.
A failed test usually has multiple failure items.
The percentage of tests is worked out as the number of tests with one or more failure items in the defect as a percentage of total tests.
The percentage of defects is worked out as the total defects in the category as a percentage of total defects for all categories.
The average defects per initial test failure is worked out as the total failure items as a percentage of total tests failed plus tests that passed after rectification of a minor defect at the time of the test.
MOT class 1 and 2 vehicles: initial failures by defect category