MOT failure · RFR #30536
Warning device shows system malfunction
Total
4,745
Models
67
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 Chrysler Voyager 4.54%
- 02 Peugeot 407 3.93%
- 03 Chrysler PT Cruiser 3.88%
- 04 Volvo S70 3.71%
- 05 Chrysler Jeep PT Cruiser 3.66%
- 06 Honda Logo 3.47%
- 07 Chrysler Jeep Grand Voyager 3.30%
- 08 Chevrolet Kalos 3.19%
- 09 Chrysler Grand Voyager 3.04%
- 10 Citroen C6 2.96%
- 11 Jeep Grand Cherokee Crd Ltd Auto 2.90%
- 12 Chrysler Jeep Patriot 2.81%
- 13 Jeep Patriot Limited Crd 2.80%
- 14 Jeep Cherokee Limited Crd 2.79%
- 15 Volvo 800 Series 2.78%
- 16 Jeep Patriot Sport Crd 2.75%
- 17 Hyundai Trajet 2.74%
- 18 Dodge Nitro 2.72%
- 19 Hyundai Coupe 2.72%
- 20 Daewoo Kalos 2.69%
- 21 Ldv V80 2.66%
- 22 Chrysler Jeep 300 2.64%
- 23 Isuzu D Max Yukon D/c Intercooler TD 2.46%
- 24 Jaguar Xk8 2.38%
- 25 Chrysler 300 C 2.35%
- 26 Jeep Cherokee Limited A 2.31%
- 27 Renault Grand Espace 2.25%
- 28 Chrysler Sebring 2.08%
- 29 BMW Z3 1.69%
- 30 MG GS 1.50%
Top 30 by rate. 37 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 warning device shows system malfunction fail an MOT?
- Warning device shows system malfunction. Most commonly flagged on the Chrysler Voyager. 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 warning device shows system 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.