mechanics.tradePosition lamp: not working
This was recorded 976,383 times on cars and light vans in 2025, which makes it number 4 on the list of things that stop a car passing.
976,383recorded in 2025
4on the national list
4.7%of the top forty defects
What the tester is looking at
A lamp missing, inoperative or in the case of a multiple light source more than 1/2 not functioning
What you can do about it
These are your sidelights. Walk round the car with them on and you will spot a dead bulb straight away.
How serious it counts as
The tester records this as a major defect. What the categories mean.
All forty defects, from 42,728,066 MOT tests in 2025.