Why does brake disc or drum significantly and… fail an MOT?

Brake disc or drum significantly and obviously worn. Most commonly flagged on the Honda WW 125 A M. UK MOT standards require this item to meet minimum safety thresholds — when it falls short, the tester logs it as a Major or Dangerous defect and the car fails outright.

How much does it cost to fix brake disc or drum significantly and…?

Costs vary depending on the vehicle, region, and severity. Use our MOT cost estimator for typical UK garage rates across the most common failure items.

MOT failure · RFR #40105

Brake disc or drum significantly and obviously worn

Total

351

Models

Models most at risk.

Ranked by rate, not raw volume. A Fiesta shows every failure a lot because there are a lot of Fiestas. Rate = share of that model's own MOTs.

Failure match · your reg

Does this failure affect your car?

Enter your reg and we'll check whether your model appears on the affected list — and where it ranks.

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Cost orientation

Hard to predict in isolation — depends what's actually worn.

This defect doesn't map to a clean retail-part swap; ranges vary too widely without seeing the car. Use the estimator to bracket the all-in cost across the items most likely to surface alongside it.

Open estimator

Frequently asked.

Why does brake disc or drum significantly and… fail an MOT?: Brake disc or drum significantly and obviously worn. Most commonly flagged on the Honda WW 125 A M. UK MOT standards require this item to meet minimum safety thresholds — when it falls short, the tester logs it as a Major or Dangerous defect and the car fails outright.
How much does it cost to fix brake disc or drum significantly and…?: Costs vary depending on the vehicle, region, and severity. Use our MOT cost estimator for typical UK garage rates across the most common failure items.

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