MOT cost .

MOT failure · RFR #40572

A transmission belt, chain, sprocket or pulley excessively loose or worn

Total

1,695

Models

116

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.

  1. 01 Lexmoto Venom 4.16%
  2. 02 Lexmoto Lxr 125 SY 125 10 2.93%
  3. 03 Yamaha Yzf R125 2.83%
  4. 04 Honda Cbf 125 M D 2.74%
  5. 05 Qingqi QM 2.71%
  6. 06 Yamaha Ybr 125 Custom 2.67%
  7. 07 Lexmoto Zsx 2.53%
  8. 08 Honda Cbf 125 M 9 2.52%
  9. 09 Sinnis ZS 125 86 Terrain 2.48%
  10. 10 Honda Xl125v 2.18%
  11. 11 Sinnis ZS 125 79 Hoodlum 2.18%
  12. 12 Honda Cbr125r 2.17%
  13. 13 Yamaha MT 125 Abs 2.08%
  14. 14 Honda Cbf 125 M B 2.07%
  15. 15 Yamaha Ybr125 2.05%
  16. 16 Honda Cbf125 1.94%
  17. 17 Yamaha Ybr 125 1.89%
  18. 18 Yamaha Yzf 1.83%
  19. 19 Yamaha Ybr 1.81%
  20. 20 Yamaha YS 125 1.68%
  21. 21 Yamaha WR 125 X 1.66%
  22. 22 Honda Glr 1.63%
  23. 23 Yamaha Sr125 1.60%
  24. 24 Aprilia Rs125 1.60%
  25. 25 Honda Cbf 1.59%
  26. 26 Lexmoto Michigan 1.56%
  27. 27 Honda Cbf 125 M A 1.50%
  28. 28 Ktm 125 Duke 19 1.48%
  29. 29 Keeway Superlight 1.42%
  30. 30 Benelli Tornado Naked T 125 1.42%

Top 30 by rate. 86 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.

Open estimator

Frequently asked.

Why does a transmission belt, chain, sprocket or… fail an MOT?
A transmission belt, chain, sprocket or pulley excessively loose or worn. Most commonly flagged on the Lexmoto Venom. The DVSA's 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 a transmission belt, chain, sprocket or…?
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.