MOT failure · RFR #31938
Engine MIL illuminated indicating a malfunction
Total
35,886
Models
233
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.
- 01 Isuzu Trucks Grafter N35.120 6.74%
- 02 Land Rover Range Rover Evoque R Dyn D 4x2 3.55%
- 03 Renault Master Mm35 Business Dci 3.50%
- 04 Renault Master Lm35 B Ness Energy Dci 3.44%
- 05 Land Rover Discovery Sport S D 4x2 3.24%
- 06 Volkswagen Crafter Cr35 Startline Tdi 3.18%
- 07 Fiat Talento 3.15%
- 08 Land Rover R Rover Evoque R Dyn S D 4x2 3.03%
- 09 Volkswagen Crafter 3.03%
- 10 Renault Master Lm35 Business + Dci 3.02%
- 11 Man Tge 3.140 2.96%
- 12 Mitsubishi Fuso Canter 2.91%
- 13 Isuzu Trucks Grafter N35.150 2.90%
- 14 Land Rover Range Rover Evoque D 4x2 2.74%
- 15 Fiat Ducato 35 Maxi Multijet II 2.73%
- 16 Land Rover Range Rover Evoque R Dyn D A 2.65%
- 17 Renault Master Ll35 Business Dci 2.53%
- 18 Mercedes Benz Vito 110 Pure Cdi 2.49%
- 19 Infiniti FX 2.48%
- 20 Mercedes Benz X 2.42%
- 21 Land Rover Range Rover Evoque S D 4x2 2.32%
- 22 Volkswagen Crafter Cr35 Trendline Tdi 2.30%
- 23 Fiat Doblo Cargo 2.28%
- 24 Ldv V80 2.26%
- 25 Nissan Nv400 Tekna Dci 2.19%
- 26 Nissan Navara 2.18%
- 27 Man Unclassified 2.12%
- 28 London Taxis Int Tx4 Limited Edition Auto 2.11%
- 29 Mercedes Benz Sprinter 2.03%
- 30 Volkswagen Amarok Aventura V6 Tdi 4M A 2.02%
Top 30 by rate. 203 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 engine mil illuminated indicating a malfunction fail an MOT?
- Engine MIL illuminated indicating a malfunction. Most commonly flagged on the Isuzu Trucks Grafter N35.120. 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 engine mil illuminated indicating a malfunction?
- 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.