Yamaha Mt 125 (mtn 125-a) MOT Pass Rate
Overall pass rate across all manufacture years, based on 1,141 real MOT test results. Failure rate: 21.9%.
Data from official DVSA MOT testing records
Yamaha Mt 125 (mtn 125-a) MOT Reliability Overview
The Yamaha Mt 125 (mtn 125-a) is a niche vehicle in the UK, with 1,141 MOT test results recorded in our database spanning 2 manufacture years. It has an overall MOT pass rate of 78.1% and a failure rate of 21.9%, which is well above the UK average of approximately 37%.
Based on this data, the Yamaha Mt 125 (mtn 125-a) earns a "Excellent" reliability rating. The average Yamaha Mt 125 (mtn 125-a) presents for MOT with approximately 8,693 miles on the clock. Manufacture year matters: 2021 models achieve the highest pass rate at 79.7%, while 2020 models have the lowest at 75.8%. This 3.9 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Yamaha Mt 125 (mtn 125-a) is Motorcycle structure and attachments, affecting 15.8% of all tests. Motorcycle structure and attachments 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 lamps and reflectors at 14.7%. Motorcycle brakes rounds out the top three at 8.9%. 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 Structure And Attachments | 15.8% | 180 |
| 2 | Motorcycle Lamps And Reflectors | 14.7% | 168 |
| 3 | Motorcycle Brakes | 8.9% | 102 |
| 4 | Motorcycle Steering | 5.4% | 62 |
| 5 | Motorcycle Tyres | 2.5% | 29 |
| 6 | Motorcycle Suspension | 1.6% | 18 |
| 7 | Motorcycle Wheels | 1.4% | 16 |
| 8 | Identification Of The Vehicle | 1.2% | 14 |
| 9 | Non-component Advisories | 0.7% | 8 |
Failures per 10,000 Miles
avg. 8,693 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 structure and attachments | 18.15 | 15.8% | 180 |
| Motorcycle lamps and reflectors | 16.94 | 14.7% | 168 |
| Motorcycle brakes | 10.28 | 8.9% | 102 |
| Motorcycle steering | 6.25 | 5.4% | 62 |
| Motorcycle tyres | 2.92 | 2.5% | 29 |
| Motorcycle suspension | 1.81 | 1.6% | 18 |
| Motorcycle wheels | 1.61 | 1.4% | 16 |
| Identification of the vehicle | 1.41 | 1.2% | 14 |
| Non-component advisories | 0.81 | 0.7% | 8 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Yamaha Mt 125 (mtn 125-a) has 8,693 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 Yamaha Mt 125 (mtn 125-a) has a mileage-adjusted failure rate of 25.19% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Yamaha Mt 125 (mtn 125-a) MOT Data
The Yamaha Mt 125 (mtn 125-a) is a niche vehicle in the UK, with 1,141 MOT test results recorded in our database spanning 2 manufacture years. It has an overall MOT pass rate of 78.1% and a failure rate of 21.9%, which is well above the UK average of approximately 37%.
For Yamaha Mt 125 (mtn 125-a) owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle structure and attachments and motorcycle lamps and reflectors 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 Mt 125 (mtn 125-a) is likely to perform.
Motorcycle structure and attachments — 15.8% of failures
Motorcycle structure and attachments issues account for 15.8% of MOT failures on the Yamaha Mt 125 (mtn 125-a). Motorcycle structure and attachments 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 lamps and reflectors — 14.7% of failures
Motorcycle lamps and reflectors issues account for 14.7% of MOT failures on the Yamaha Mt 125 (mtn 125-a). 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 brakes — 8.9% of failures
Motorcycle brakes issues account for 8.9% of MOT failures on the Yamaha Mt 125 (mtn 125-a). 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 Yamaha Mt 125 (mtn 125-a)?
Based on 1,141 MOT tests in our database, the Yamaha Mt 125 (mtn 125-a) has an overall pass rate of 78.1% (21.9% fail rate).
What are the most common MOT failures on a Yamaha Mt 125 (mtn 125-a)?
The top 3 reasons a Yamaha Mt 125 (mtn 125-a) fails its MOT are: 1. Motorcycle structure and attachments (15.8%), 2. Motorcycle lamps and reflectors (14.7%), 3. Motorcycle brakes (8.9%). Check these areas before booking your MOT.
Is the Yamaha Mt 125 (mtn 125-a) reliable?
With a 21.9% MOT failure rate, the Mt 125 (mtn 125-a) is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Yamaha Mt 125 (mtn 125-a)?
Based on failure data, focus on: Motorcycle structure and attachments (15.8%); Motorcycle lamps and reflectors (14.7%); Motorcycle brakes (8.9%). 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.