Mz Unclassified MOT Pass Rate
Overall pass rate across all manufacture years, based on 5,064 real MOT test results. Failure rate: 14.8%.
Data from official DVSA MOT testing records
Mz Unclassified MOT Reliability Overview
The Mz Unclassified is a less common vehicle in the UK, with 5,064 MOT test results recorded in our database spanning 30 manufacture years. It has an overall MOT pass rate of 85.2% and a failure rate of 14.8%, which is well above the UK average of approximately 37%.
Based on this data, the Mz Unclassified earns a "Excellent" reliability rating. The average Mz Unclassified presents for MOT with approximately 23,330 miles on the clock. Manufacture year matters: 1982 models achieve the highest pass rate at 93.0%, while 1998 models have the lowest at 75.4%. This 17.6 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Mz Unclassified is Motorcycle lighting and signalling, affecting 8.6% 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 5.0%. Motorcycle lamps and reflectors rounds out the top three at 3.1%. 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
Best Year to Buy
📈 How Each Vintage Ages
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 | 10.4% | 528 |
| 2 | Motorcycle Brakes | 5.6% | 282 |
| 3 | Motorcycle Steering And Suspension | 3.2% | 161 |
| 4 | Motorcycle Tyres And Wheels | 3.1% | 158 |
| 5 | Motorcycle Lamps And Reflectors | 3.1% | 156 |
| 6 | Motorcycle Structure And Attachments | 0.9% | 44 |
| 7 | Motorcycle Fuel And Exhaust | 0.8% | 40 |
| 8 | Motorcycle Body And Structure | 0.7% | 37 |
| 9 | Motorcycle Suspension | 0.7% | 33 |
| 10 | Motorcycle Tyres | 0.7% | 33 |
| 11 | Motorcycle Steering | 0.5% | 25 |
| 12 | Motorcycle Reg Plates And Vin | 0.5% | 25 |
| 13 | Brakes | 0.5% | 24 |
| 14 | Motorcycle Wheels | 0.5% | 24 |
| 15 | Motorcycle Audible Warning (Horn) | 0.4% | 20 |
Failures per 10,000 Miles
avg. 23,330 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 | 4.47 | 10.4% | 528 |
| Motorcycle brakes | 2.39 | 5.6% | 282 |
| Motorcycle steering and suspension | 1.36 | 3.2% | 161 |
| Motorcycle tyres and wheels | 1.34 | 3.1% | 158 |
| Motorcycle lamps and reflectors | 1.32 | 3.1% | 156 |
| Motorcycle structure and attachments | 0.37 | 0.9% | 44 |
| Motorcycle fuel and exhaust | 0.34 | 0.8% | 40 |
| Motorcycle body and structure | 0.31 | 0.7% | 37 |
| Motorcycle suspension | 0.28 | 0.7% | 33 |
| Motorcycle tyres | 0.28 | 0.7% | 33 |
| Motorcycle steering | 0.21 | 0.5% | 25 |
| Motorcycle reg plates and vin | 0.21 | 0.5% | 25 |
| Brakes | 0.20 | 0.5% | 24 |
| Motorcycle wheels | 0.20 | 0.5% | 24 |
| Motorcycle audible warning (Horn) | 0.17 | 0.4% | 20 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Mz Unclassified has 23,330 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 Unclassified has a mileage-adjusted failure rate of 6.34% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Mz Unclassified MOT Data
The Mz Unclassified is a less common vehicle in the UK, with 5,064 MOT test results recorded in our database spanning 30 manufacture years. It has an overall MOT pass rate of 85.2% and a failure rate of 14.8%, which is well above the UK average of approximately 37%.
For Mz Unclassified 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 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 Unclassified is likely to perform.
Motorcycle lighting and signalling — 8.6% of failures
Motorcycle lighting and signalling issues account for 8.6% of MOT failures on the Mz Unclassified. 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 — 5.0% of failures
Motorcycle brakes issues account for 5.0% of MOT failures on the Mz Unclassified. 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 lamps and reflectors — 3.1% of failures
Motorcycle lamps and reflectors issues account for 3.1% of MOT failures on the Mz Unclassified. Lighting failures cover all external lights: headlights, tail lights, brake lights, indicators, fog lights, and reflectors. A single blown bulb will cause an MOT fail. This is one of the most preventable failure categories. Typical repair costs: £5–50. Pre-MOT check: Walk around the car and check every light — headlights (dipped and main beam), side lights, tail lights, brake lights, indicators, hazard lights, reverse light, rear fog light, and number plate lights. Replace any blown bulbs before the test.
Frequently Asked Questions
What is the MOT pass rate for the Mz Unclassified?
Based on 5,064 MOT tests in our database, the Mz Unclassified has an overall pass rate of 85.2% (14.8% fail rate).
What are the most common MOT failures on a Mz Unclassified?
The top 3 reasons a Mz Unclassified fails its MOT are: 1. Motorcycle lighting and signalling (8.6%), 2. Motorcycle brakes (5.0%), 3. Motorcycle lamps and reflectors (3.1%). Check these areas before booking your MOT.
Is the Mz Unclassified reliable?
With a 14.8% MOT failure rate, the Unclassified is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Mz Unclassified?
Based on failure data, focus on: Motorcycle lighting and signalling (8.6%); Motorcycle brakes (5.0%); Motorcycle lamps and reflectors (3.1%). 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.