Mz Simpson MOT Pass Rate
Overall pass rate across all manufacture years, based on 41 real MOT test results. Failure rate: 14.6%.
Data from official DVSA MOT testing records
Mz Simpson MOT Reliability Overview
The Mz Simpson is a rare vehicle in the UK, with 41 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 85.4% and a failure rate of 14.6%, which is well above the UK average of approximately 37%.
Based on this data, the Mz Simpson earns a "Excellent" reliability rating. The average Mz Simpson presents for MOT with approximately 13,282 miles on the clock.
The most common MOT failure for the Mz Simpson is Motorcycle lighting and signalling, affecting 9.8% of all tests. Motorcycle lighting and signalling issues are a common cause of MOT failure. Regular inspection and maintenance of these components helps ensure your vehicle passes its MOT. The second most common issue is Motorcycle steering and suspension at 7.3%. Motorcycle steering rounds out the top three at 2.4%. Together, these top 3 failure categories account for a significant portion of all MOT failures for this model.
Top failures across all manufacture years combined. Individual year pages may show different top failures.
What Fails Most
* High Fail Rate badge indicates an MOT pass rate below 65% (failure rate above 35%).
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Motorcycle Lighting And Signalling | 17.1% | 7 |
| 2 | Motorcycle Steering And Suspension | 7.3% | 3 |
| 3 | Motorcycle Driving Controls | 2.4% | 1 |
| 4 | Motorcycle Steering | 2.4% | 1 |
| 5 | Motorcycle Body And Structure | 2.4% | 1 |
Failures per 10,000 Miles
avg. 13,282 miFor every 10,000 miles driven, this shows what percentage of MOT tests fail for each category. This accounts for how far cars are actually driven, not just raw pass/fail counts.
View as table
| Category | Rate / 10K mi | Raw % | Count |
|---|---|---|---|
| Motorcycle lighting and signalling | 12.85 | 17.1% | 7 |
| Motorcycle steering and suspension | 5.51 | 7.3% | 3 |
| Motorcycle driving controls | 1.84 | 2.4% | 1 |
| Motorcycle steering | 1.84 | 2.4% | 1 |
| Motorcycle body and structure | 1.84 | 2.4% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Mz Simpson has 13,282 miles when tested for MOT.
📊 Mileage-Adjusted Failure Rate
How often this car fails MOT relative to how much it's driven — a fairer comparison than raw pass rate.
The Mz Simpson has a mileage-adjusted failure rate of 10.99% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Mz Simpson MOT Data
The Mz Simpson is a rare vehicle in the UK, with 41 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 85.4% and a failure rate of 14.6%, which is well above the UK average of approximately 37%.
For Mz Simpson owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle lighting and signalling and motorcycle steering and suspension for the best chance of a first-time pass. Use our detailed year-by-year breakdown and failure analysis below to understand how your specific Simpson is likely to perform.
Motorcycle lighting and signalling — 9.8% of failures
Motorcycle lighting and signalling issues account for 9.8% of MOT failures on the Mz Simpson. Motorcycle lighting and signalling issues are a common cause of MOT failure. Regular inspection and maintenance of these components helps ensure your vehicle passes its MOT. Typical repair costs: £100–400. Pre-MOT check: Have this system checked during regular servicing. Look for warning signs like unusual noises, vibrations, or dashboard warning lights.
Motorcycle steering and suspension — 7.3% of failures
Motorcycle steering and suspension issues account for 7.3% of MOT failures on the Mz Simpson. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs: £200–500. Pre-MOT check: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks.
Motorcycle steering — 2.4% of failures
Motorcycle steering issues account for 2.4% of MOT failures on the Mz Simpson. Steering failures include excessive play in the steering wheel, leaking power steering fluid, worn track rod ends, and damaged steering rack. These affect vehicle control and are closely related to suspension wear. Typical repair costs: £150–600. Pre-MOT check: Check for excessive steering wheel play (more than a few inches of free movement). Listen for whining from the power steering pump. Look for fluid leaks under the car near the front wheels.
Frequently Asked Questions
What is the MOT pass rate for the Mz Simpson?
Based on 41 (based on limited data) MOT tests in our database, the Mz Simpson has an overall pass rate of 85.4% (14.6% fail rate).
What are the most common MOT failures on a Mz Simpson?
The top 3 reasons a Mz Simpson fails its MOT are: 1. Motorcycle lighting and signalling (9.8%), 2. Motorcycle steering and suspension (7.3%), 3. Motorcycle steering (2.4%). Check these areas before booking your MOT.
Is the Mz Simpson reliable?
With a 14.6% MOT failure rate, the Simpson is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Mz Simpson?
Based on failure data, focus on: Motorcycle lighting and signalling (9.8%); Motorcycle steering and suspension (7.3%); Motorcycle steering (2.4%). These are the areas most likely to cause a fail. Also check all lights, tyres (minimum 1.6mm tread), and windscreen condition — these are quick wins that apply to all cars.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.