Mz 125sm MOT Pass Rate
Overall pass rate across all manufacture years, based on 485 real MOT test results. Failure rate: 35.7%.
Data from official DVSA MOT testing records
Mz 125sm MOT Reliability Overview
The Mz 125sm is a rare vehicle in the UK, with 485 MOT test results recorded in our database spanning 6 manufacture years. It has an overall MOT pass rate of 64.3% and a failure rate of 35.7%, which is around the UK average of approximately 37%.
Based on this data, the Mz 125sm earns a "Average" reliability rating. The average Mz 125sm presents for MOT with approximately 20,830 miles on the clock. Manufacture year matters: 2005 models achieve the highest pass rate at 66.3%, while 2002 models have the lowest at 55.2%. This 11.1 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Mz 125sm is Motorcycle lighting and signalling, affecting 23.7% 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 brakes at 21.2%. Motorcycle tyres and wheels rounds out the top three at 11.3%. 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
Pass Rate by Manufacture Year
* 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 | 30.3% | 147 |
| 2 | Motorcycle Brakes | 25.6% | 124 |
| 3 | Motorcycle Tyres And Wheels | 13.4% | 65 |
| 4 | Motorcycle Drive System | 12.8% | 62 |
| 5 | Motorcycle Steering And Suspension | 12.4% | 60 |
| 6 | Motorcycle Lamps And Reflectors | 8.9% | 43 |
| 7 | Motorcycle Structure And Attachments | 3.5% | 17 |
| 8 | Motorcycle Suspension | 2.3% | 11 |
| 9 | Motorcycle Driving Controls | 1.6% | 8 |
| 10 | Motorcycle Steering | 1.4% | 7 |
| 11 | Motorcycle Fuel And Exhaust | 1.4% | 7 |
| 12 | Motorcycle Reg Plates And Vin | 1.2% | 6 |
| 13 | Motorcycle Wheels | 1.0% | 5 |
| 14 | Items Not Tested | 0.8% | 4 |
| 15 | Identification Of The Vehicle | 0.8% | 4 |
Failures per 10,000 Miles
avg. 20,830 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 | 14.55 | 30.3% | 147 |
| Motorcycle brakes | 12.27 | 25.6% | 124 |
| Motorcycle tyres and wheels | 6.43 | 13.4% | 65 |
| Motorcycle drive system | 6.14 | 12.8% | 62 |
| Motorcycle steering and suspension | 5.94 | 12.4% | 60 |
| Motorcycle lamps and reflectors | 4.26 | 8.9% | 43 |
| Motorcycle structure and attachments | 1.68 | 3.5% | 17 |
| Motorcycle suspension | 1.09 | 2.3% | 11 |
| Motorcycle driving controls | 0.79 | 1.6% | 8 |
| Motorcycle steering | 0.69 | 1.4% | 7 |
| Motorcycle fuel and exhaust | 0.69 | 1.4% | 7 |
| Motorcycle reg plates and vin | 0.59 | 1.2% | 6 |
| Motorcycle wheels | 0.49 | 1.0% | 5 |
| Items Not Tested | 0.40 | 0.8% | 4 |
| Identification of the vehicle | 0.40 | 0.8% | 4 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Mz 125sm has 20,830 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 125sm has a mileage-adjusted failure rate of 17.14% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Mz 125sm MOT Data
The Mz 125sm is a rare vehicle in the UK, with 485 MOT test results recorded in our database spanning 6 manufacture years. It has an overall MOT pass rate of 64.3% and a failure rate of 35.7%, which is around the UK average of approximately 37%.
For Mz 125sm owners, these results suggest average reliability — some preparation before MOT can improve pass chances. Focus your pre-MOT checks on motorcycle lighting and signalling and motorcycle brakes 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 125sm is likely to perform.
Motorcycle lighting and signalling — 23.7% of failures
Motorcycle lighting and signalling issues account for 23.7% of MOT failures on the Mz 125sm. 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 brakes — 21.2% of failures
Motorcycle brakes issues account for 21.2% of MOT failures on the Mz 125sm. Brake-related failures include worn brake pads, corroded brake discs, leaking brake lines, and faulty brake servos. These are safety-critical components — any brake deficiency will result in an MOT fail. Typical repair costs: £150–400. Pre-MOT check: Listen for squealing or grinding noises. Check brake pedal feel — if it feels spongy or goes to the floor, have the system inspected immediately. Look at brake pad thickness through the wheel spokes (minimum 3mm).
Motorcycle tyres and wheels — 11.3% of failures
Motorcycle tyres and wheels issues account for 11.3% of MOT failures on the Mz 125sm. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Frequently Asked Questions
What is the MOT pass rate for the Mz 125sm?
Based on 485 MOT tests in our database, the Mz 125sm has an overall pass rate of 64.3% (35.7% fail rate).
What are the most common MOT failures on a Mz 125sm?
The top 3 reasons a Mz 125sm fails its MOT are: 1. Motorcycle lighting and signalling (23.7%), 2. Motorcycle brakes (21.2%), 3. Motorcycle tyres and wheels (11.3%). Check these areas before booking your MOT.
Is the Mz 125sm reliable?
With a 35.7% MOT failure rate, the 125sm is about average compared to the UK average of ~40%.
What should I check before an MOT on my Mz 125sm?
Based on failure data, focus on: Motorcycle lighting and signalling (23.7%); Motorcycle brakes (21.2%); Motorcycle tyres and wheels (11.3%). 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.