MOT failure · RFR #31873
Emissions levels exceed the manufacturer's specified limits
Total
8,527
Models
63
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 MG Mgf 3.56%
- 02 Peugeot 106 3.31%
- 03 Vauxhall Calibra 3.19%
- 04 Audi Cabriolet 3.04%
- 05 Rover 214 3.01%
- 06 Mazda Eunos 2.97%
- 07 Toyota Picnic 2.95%
- 08 Honda Prelude 2.70%
- 09 Toyota Carina 2.69%
- 10 Mazda RX 8 2.66%
- 11 Rover 216 2.46%
- 12 Citroen Saxo 2.38%
- 13 Honda Civic Crx 2.31%
- 14 Rover 416 2.27%
- 15 Audi 80 2.21%
- 16 Proton Jumbuck 2.17%
- 17 Toyota Mr2 2.15%
- 18 Fiat Coupe 2.10%
- 19 Audi Coupe 1.85%
- 20 Subaru Impreza 1.84%
- 21 Toyota Celica 1.82%
- 22 Rover Metro 1.76%
- 23 Nissan 350 Z 1.74%
- 24 BMW Z3 1.70%
- 25 Volvo 900 Series 1.63%
- 26 Tvr Cerbera 1.61%
- 27 Nissan Skyline 1.48%
- 28 Mini Mini 1.47%
- 29 Nissan Silvia 1.47%
- 30 Nissan 200 SX 1.38%
Top 30 by rate. 33 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 emissions levels exceed the manufacturer's specified… fail an MOT?
- Emissions levels exceed the manufacturer's specified limits. Most commonly flagged on the MG Mgf. 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 emissions levels exceed the manufacturer's specified…?
- 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.