mechanics.tradeHeadlamp: not working on dipped beam
This was recorded 503,317 times on cars and light vans in 2025, which makes it number 19 on the list of things that stop a car passing.
503,317recorded in 2025
19on the national list
2.4%of the top forty defects
What the tester is looking at
A headlamp or light source missing, inoperative or more than â½ not functioning in the case of led
What you can do about it
Headlamps can drift out of line over time. A garage can set the aim again quickly.
How serious it counts as
The tester records this as a major defect. What the categories mean.
Other things checked on the headlamp
All forty defects, from 42,728,066 MOT tests in 2025.