MOT failure · RFR #30477
Excessive fluctuation in brake effort through each wheel revolution.
Total
3,406
Models
199
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.
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- 01 SEAT Arona Xcellence Lux Ecotsi S A 1.90%
- 02 SEAT Arona FR Ecotsi 1.63%
- 03 SEAT Arona FR Red Edition Ecotsi 1.52%
- 04 SEAT Arona FR Ecotsi S A 1.38%
- 05 SEAT Arona FR Sport Ecotsi 1.08%
- 06 Skoda Kamiq Monte Carlo Tsi S A 0.99%
- 07 Skoda Kamiq Monte Carlo Tsi 0.94%
- 08 Citroen Berlingo 1000 EN Prise Bluehdi 0.90%
- 09 Skoda Kamiq SE Tsi S A 0.87%
- 10 Skoda Kamiq SE Tsi 0.84%
- 11 SEAT Arona FR Sport Ecotsi S A 0.80%
- 12 Skoda Scala 0.76%
- 13 Skoda Kamiq SE L Tsi 0.72%
- 14 Citroen Berlingo 1000 Eprise Pro Bhdi 0.70%
- 15 Vauxhall Vivaro E 3100 Dynamic 0.68%
- 16 Skoda Kamiq SE L Tsi S A 0.62%
- 17 SEAT Arona 0.60%
- 18 Mercedes Benz C 300 Amg Line ED Prem D A 0.58%
- 19 Volkswagen T Cross 0.57%
- 20 Ford Transit Custom 300 Trail Eblue 0.54%
- 21 Tesla Model S 0.53%
- 22 Volkswagen Id3 Business 0.52%
- 23 Vauxhall Crossland X Business ED Nav T 0.52%
- 24 Volkswagen Tiguan Match Tdi 0.49%
- 25 Lexus LS 0.48%
- 26 MG ZS Exclusive Vti Tech 0.48%
- 27 Mercedes Benz A 250 Amg Line E Auto 0.48%
- 28 Morgan Plus 8 0.46%
- 29 Toyota Hilux Invincible X D 4d4wd Dcb 0.45%
- 30 Toyota Gt86 0.44%
Top 30 by rate. 169 more models also logged this defect.
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.
Frequently asked.
- Why does excessive fluctuation in brake effort through… fail an MOT?
- Excessive fluctuation in brake effort through each wheel revolution. Most commonly flagged on the SEAT Arona Xcellence Lux Ecotsi S A. 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 excessive fluctuation in brake effort through…?
- 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.
Real examples from owners.
Owner reports sourced from honestjohn.co.uk that mention keywords from this failure. Matched, not summarised.
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