Smc Cg MOT Failures
An analysis of 2,126 real DVSA MOT tests on the Smc Cg — what fails, how often, and how that compares to every other car on UK roads.
Where the Smc Cg fails its MOT
The single biggest MOT failure point on the Smc Cg is parking brake efficiency less than 50% of the r... — this model is 376 times more likely to fail on this item than the average car on UK roads. That makes it an extreme outlier for anyone buying or owning this model. Across 2,126 MOT tests, 3.1% of all Smc Cg tests recorded this as a failure.
Brake failures on the MOT range from worn pads and discs (routine maintenance) to corroded brake lines and seized calipers (more serious). Check for any pulling under braking and listen for grinding.
Other notable weak points include exhaust system damage (187x the fleet average), wheel bearings worn (34x the fleet average), and suspension pin, bush or joint worn (32x the fleet average). These ratios compare the Smc Cg's failure rate on each item against the national average for all cars tested — a ratio of 10x means this model fails ten times more often than a typical car.
The failures span 3 categories: Brakes, Bodywork, Suspension. If you're inspecting a Smc Cg before purchase, these are the areas to focus on — and if any have been flagged as advisories on a previous MOT, they're likely to become failures in the near future.
What to check before buying a Smc Cg
Based on the MOT failure data and known issues above, here's what to prioritise when inspecting a Smc Cg:
Brakes — check for parking brake efficiency less than 50% of the r.... Bodywork — check for exhaust system damage. Suspension — check for wheel bearings worn, suspension pin, bush or joint worn.
Always check the car's full MOT history for patterns — recurring advisories often become failures within 12 months. Enter any reg into our free car check to see the complete picture.
Looking at a specific Smc Cg?
Enter the reg to see its full MOT history, mileage records, write-off status, and finance checks.
Smc Cg MOT FAQs
What are the most common MOT failures on a Smc Cg?
Based on 2,126 DVSA MOT tests, the most common failure is parking brake efficiency less than 50% of the r... — at 376x the national fleet average. Other frequent failures include exhaust system damage and wheel bearings worn.
Is the Smc Cg reliable based on MOT data?
The Smc Cg has 4 categories where it fails more often than average. The main concern is parking brake efficiency less than 50% of the r.... Always check a specific car's full history before buying.
What MOT failures should I expect at high mileage?
The most common high-mileage failures include parking brake efficiency less than 50% of the r..., exhaust system damage, wheel bearings worn.
How do I check a Smc Cg's MOT history?
Enter the registration number into our free car check above. You'll see every MOT test result, advisories and failures, mileage readings, write-off status, and finance checks.
MOT failure data sourced from DVSA bulk test records via data.gov.uk. Ratios compare this model's failure rate against the national fleet average. Known issues sourced from manufacturer bulletins, specialist workshops, and verified owner reports.