The joint at the outer end of the steering track rod — the bit that actually turns the wheel — has developed play. Any slack there translates directly into vague steering and uneven tyre wear.
Wording as it commonly appears on an MOT certificate: “Track rod end ball joint has excessive play”.
What does it mean?
The joint at the outer end of the steering track rod — the bit that actually turns the wheel — has developed play. Any slack there translates directly into vague steering and uneven tyre wear.
How serious is it?
Usually recorded as: Major. The tester assesses the actual vehicle on the day, so your certificate is what counts.
What normally causes it?
- A split dust boot letting water and grit into the joint, which is far and away the most common reason
- Mileage and age
- Kerb impacts
What a mechanic would check
Wheel in the air, hands at nine and three, rock it while watching the joint. Play there is the track rod end; play with a different feel, or a rumble when you spin the wheel, points at the bearing instead. I'd check the boots on the inner rack ends at the same time, since they're right next door.
What might need replacing
- Track rod end
- Inner rack end, if that's where the movement is
- Front wheel alignment afterwards — this is not optional, the tracking changes as soon as the joint is disturbed
Can you still drive it?
It's a failure. A worn track rod end can eventually separate, and if it does you lose steering on that wheel entirely, so this is one to sort promptly rather than run on.
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This is general guidance from a UK mechanic, not a substitute for a physical inspection. Only the tester who inspected your vehicle can confirm what was recorded and why.