MOT failure · RFR #32132
Emissions test unable to be completed
Total
514
Models
20
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 Daihatsu Hijet 2.70%
- 02 Rover 216 1.97%
- 03 Volvo 900 Series 1.75%
- 04 Citroen Saxo 1.60%
- 05 Porsche 924 1.11%
- 06 Nissan 200 SX 0.82%
- 07 Tvr Cerbera 0.78%
- 08 Ferrari F355 0.62%
- 09 Tvr Griffith 500 0.45%
- 10 Ford Fiesta ST Performance ED Turbo 0.38%
- 11 Tvr Tuscan 0.34%
- 12 Land Rover Defender X Mhev Auto 0.33%
- 13 Fiat 500x Sport 0.30%
- 14 Audi RS Q8 Vsprung Tfsi Mhev Quat A 0.26%
- 15 Nissan GT R 0.17%
- 16 Ford Puma ST Line 0.14%
- 17 BMW M4 Competition Auto 0.12%
- 18 Mercedes Benz GT 0.08%
- 19 Land Rover Range Rover Sport Hst Auto 0.08%
- 20 Lamborghini Aventador 0.06%
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 test unable to be completed fail an MOT?
- Emissions test unable to be completed. Most commonly flagged on the Daihatsu Hijet. 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 test unable to be completed?
- 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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