Mz S51 MOT Pass Rate
Overall pass rate across all manufacture years, based on 38 real MOT test results. Failure rate: 15.8%.
Data from official DVSA MOT testing records
Mz S51 MOT Reliability Overview
The Mz S51 is a rare vehicle in the UK, with 38 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 84.2% and a failure rate of 15.8%, which is well above the UK average of approximately 37%.
Based on this data, the Mz S51 earns a "Excellent" reliability rating. The average Mz S51 presents for MOT with approximately 4,611 miles on the clock.
The most common MOT failure for the Mz S51 is Motorcycle lamps and reflectors, affecting 7.9% of all tests. 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. The second most common issue is Motorcycle lighting and signalling at 5.3%. Motorcycle brakes rounds out the top three at 5.3%. 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
* 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 Lamps And Reflectors | 7.9% | 3 |
| 2 | Motorcycle Lighting And Signalling | 7.9% | 3 |
| 3 | Motorcycle Brakes | 5.3% | 2 |
| 4 | Motorcycle Suspension | 5.3% | 2 |
| 5 | Motorcycle Steering And Suspension | 2.6% | 1 |
| 6 | Motorcycle Tyres And Wheels | 2.6% | 1 |
| 7 | Motorcycle Audible Warning (Horn) | 2.6% | 1 |
| 8 | Motorcycle Tyres | 2.6% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Mz S51 has 4,611 miles when tested for MOT.
About Mz S51 MOT Data
The Mz S51 is a rare vehicle in the UK, with 38 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 84.2% and a failure rate of 15.8%, which is well above the UK average of approximately 37%.
For Mz S51 owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle lamps and reflectors and motorcycle lighting and signalling 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 S51 is likely to perform.
Motorcycle lamps and reflectors — 7.9% of failures
Motorcycle lamps and reflectors issues account for 7.9% of MOT failures on the Mz S51. 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.
Motorcycle lighting and signalling — 5.3% of failures
Motorcycle lighting and signalling issues account for 5.3% of MOT failures on the Mz S51. 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 — 5.3% of failures
Motorcycle brakes issues account for 5.3% of MOT failures on the Mz S51. 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).
Frequently Asked Questions
What is the MOT pass rate for the Mz S51?
Based on 38 (based on limited data) MOT tests in our database, the Mz S51 has an overall pass rate of 84.2% (15.8% fail rate).
What are the most common MOT failures on a Mz S51?
The top 3 reasons a Mz S51 fails its MOT are: 1. Motorcycle lamps and reflectors (7.9%), 2. Motorcycle lighting and signalling (5.3%), 3. Motorcycle brakes (5.3%). Check these areas before booking your MOT.
Is the Mz S51 reliable?
With a 15.8% MOT failure rate, the S51 is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Mz S51?
Based on failure data, focus on: Motorcycle lamps and reflectors (7.9%); Motorcycle lighting and signalling (5.3%); Motorcycle brakes (5.3%). 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.