MOT failure · RFR #31875
Emissions levels exceed default limits
Total
1,283
Models
36
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
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- 01 MG Mgf 2.08%
- 02 Rover 214 1.90%
- 03 Vauxhall Calibra 1.58%
- 04 BMW Z3 1.16%
- 05 Subaru Impreza 0.82%
- 06 BMW 840 0.76%
- 07 Vauxhall Vx220 0.71%
- 08 Tvr Griffith 500 0.68%
- 09 Lotus Elise 0.64%
- 10 Caterham Unclassified 0.63%
- 11 MG Rv8 0.55%
- 12 Tvr Cerbera 0.55%
- 13 Ferrari F355 0.53%
- 14 Subaru Wrx 0.46%
- 15 Morgan 4/4 0.44%
- 16 MG ZS Excite T Gdi Auto 0.40%
- 17 Morgan Plus 4 0.34%
- 18 BMW 135 0.32%
- 19 Porsche 911 Turbo S S A 0.30%
- 20 BMW X4 M Competition Auto 0.29%
- 21 MG ZS Exclusive T Gdi Auto 0.26%
- 22 Ford Puma ST Line 0.24%
- 23 Toyota Supra Pro Auto 0.22%
- 24 Abarth 124 Spider Multiair 0.21%
- 25 Audi RS 6 V Sprung Tfsi Mhev Quat A 0.21%
- 26 Ford Fiesta ST Performance ED Turbo 0.19%
- 27 Mercedes Benz Amg A 45 S 4matic+ Plus Auto 0.17%
- 28 BMW 440 0.17%
- 29 Volkswagen Tiguan R Tsi 4motion S A 0.12%
- 30 Lamborghini Gallardo 0.12%
Top 30 by rate. 6 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 emissions levels exceed default limits fail an MOT?
- Emissions levels exceed default limits. Most commonly flagged on the MG Mgf. 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 emissions levels exceed default limits?
- 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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