GovWire

About this data set

This data set comes from data held by the Driver and Vehicle Standards Agency (DVSA).

It isnt classed as an official statistic. This means its not subject to scrutiny and assessment by the UK Statistics Authority.

Annual tests for lorries, buses and trailers

The annual test for lorries, buses and trailers is similar to the MOT test that cars take each year.

Summary of annual tests for lorries, buses and trailers

The initial fail rate is the rate for vehicles as they were brought for the annual test. The final fail rate excludes vehicles that pass the test after rectification of minor defects at the time of the test.

The non-DVSA rows show tests done at designated premises and authorised testing facilities.

This data table is updated every 3 months.

Top 10 reasons for vehicle fails

These data sets give the percentage of vehicles tested where the item was listed as a reason for failure.

Vehicles can fail for one or more items, so these percentages cant be added to give a total fail rate for these items.

These data tables are updated every 3 months.

Vehicle initial test fail rate by age

Theres no trailer registration scheme, so the age of trailers tested has been estimated using each trailers ID number. These are allocated by DVSA when the owner or operator cant give a precise date of manufacture.

The failure rates are based on this estimation.

This data table is updated every 3 months.

Vehicle initial test fail rate by fleet size

This data table is updated every 3 months.