mechanics.tradeJoints: constant velocity boot severely deteriorated
This was recorded 710,819 times on cars and light vans in 2025, which makes it number 7 on the list of things that stop a car passing.
710,819recorded in 2025
7on the national list
3.4%of the top forty defects
What the tester is looking at
A transmission shaft constant velocity joint boot severely deteriorated
What you can do about it
These are the rubber boots that keep grease in and grit out. Caught early they are a small job.
How serious it counts as
The tester records this as a minor defect. What the categories mean.
Other things checked on the joints
All forty defects, from 42,728,066 MOT tests in 2025.