MOT failure · RFR #31864
Emissions levels exceed default limits
Total
2,240
Models
26
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
Does this failure affect your car?
Enter your reg and we'll check whether your model appears on the affected list — and where it ranks.
Want full MOT history, pass rate, and advisories? Use the reg checker →
Reg saved only in this browser; we never log it server-side. The lookup runs once against the official records each time you submit.
- 01 Austin Mini 1000 City E 5.40%
- 02 Austin Mini Mayfair 4.49%
- 03 Rover Metro 3.35%
- 04 Mercedes Benz 190 2.78%
- 05 Porsche 924 2.28%
- 06 Citroen 2cv 2.25%
- 07 Rover Mini 2.23%
- 08 Ford Capri 2.03%
- 09 MG B GT 1.94%
- 10 Lotus Elan 1.75%
- 11 Peugeot 205 1.68%
- 12 Porsche 928 S 1.61%
- 13 Ford Sierra 1.58%
- 14 MG B 1.55%
- 15 Audi Quattro 1.54%
- 16 Mercedes Benz 230 1.54%
- 17 Porsche 944 1.45%
- 18 Triumph Stag 1.45%
- 19 Renault R5 1.35%
- 20 Vauxhall Nova 1.27%
- 21 Mercedes Benz 200 1.21%
- 22 Mercedes Benz 300 1.18%
- 23 Mazda RX 7 0.96%
- 24 Mercedes Benz 500 0.89%
- 25 Lotus Esprit 0.77%
- 26 Caterham Seven (s3) 0.49%
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 Austin Mini 1000 City E. 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.
Click Mechanic · affiliate
Book a mobile mechanic
Affiliate links — small commission, no extra cost to you.
Mobile mechanic · UK-wide
Book a mechanic at your door.
Fixed-price quotes upfront. No garage needed. Click Mechanic sends a vetted local mechanic to you — home, work, or roadside.