Yamaha Dt80 MOT Pass Rate
Overall pass rate across all manufacture years, based on 124 real MOT test results. Failure rate: 20.2%.
Data from official DVSA MOT testing records
Yamaha Dt80 MOT Reliability Overview
The Yamaha Dt80 is a rare vehicle in the UK, with 124 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 79.8% and a failure rate of 20.2%, which is well above the UK average of approximately 37%.
Based on this data, the Yamaha Dt80 earns a "Excellent" reliability rating. The average Yamaha Dt80 presents for MOT with approximately 17,582 miles on the clock. The 1983 manufacture year performs best with a 78.4% pass rate.
The most common MOT failure for the Yamaha Dt80 is Motorcycle lamps and reflectors, affecting 13.7% 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 7.3%. Motorcycle brakes rounds out the top three at 6.5%. 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 Lamps And Reflectors | 13.7% | 17 |
| 2 | Motorcycle Lighting And Signalling | 7.3% | 9 |
| 3 | Motorcycle Brakes | 6.5% | 8 |
| 4 | Motorcycle Suspension | 3.2% | 4 |
| 5 | Motorcycle Drive System | 3.2% | 4 |
| 6 | Motorcycle Structure And Attachments | 3.2% | 4 |
| 7 | Motorcycle Steering | 2.4% | 3 |
| 8 | Motorcycle Audible Warning (Horn) | 2.4% | 3 |
| 9 | Motorcycle Steering And Suspension | 2.4% | 3 |
| 10 | Motorcycle Tyres And Wheels | 1.6% | 2 |
| 11 | Motorcycle Wheels | 1.6% | 2 |
| 12 | Motorcycle Fuel And Exhaust | 0.8% | 1 |
Failures per 10,000 Miles
avg. 17,582 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 lamps and reflectors | 7.80 | 13.7% | 17 |
| Motorcycle lighting and signalling | 4.13 | 7.3% | 9 |
| Motorcycle brakes | 3.67 | 6.5% | 8 |
| Motorcycle suspension | 1.83 | 3.2% | 4 |
| Motorcycle drive system | 1.83 | 3.2% | 4 |
| Motorcycle structure and attachments | 1.83 | 3.2% | 4 |
| Motorcycle steering | 1.38 | 2.4% | 3 |
| Motorcycle audible warning (Horn) | 1.38 | 2.4% | 3 |
| Motorcycle steering and suspension | 1.38 | 2.4% | 3 |
| Motorcycle tyres and wheels | 0.92 | 1.6% | 2 |
| Motorcycle wheels | 0.92 | 1.6% | 2 |
| Motorcycle fuel and exhaust | 0.46 | 0.8% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Yamaha Dt80 has 17,582 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 Dt80 has a mileage-adjusted failure rate of 11.49% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Yamaha Dt80 MOT Data
The Yamaha Dt80 is a rare vehicle in the UK, with 124 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 79.8% and a failure rate of 20.2%, which is well above the UK average of approximately 37%.
For Yamaha Dt80 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 Dt80 is likely to perform.
Motorcycle lamps and reflectors — 13.7% of failures
Motorcycle lamps and reflectors issues account for 13.7% of MOT failures on the Yamaha Dt80. 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 — 7.3% of failures
Motorcycle lighting and signalling issues account for 7.3% of MOT failures on the Yamaha Dt80. 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 — 6.5% of failures
Motorcycle brakes issues account for 6.5% of MOT failures on the Yamaha Dt80. 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 Dt80?
Based on 124 MOT tests in our database, the Yamaha Dt80 has an overall pass rate of 79.8% (20.2% fail rate).
What are the most common MOT failures on a Yamaha Dt80?
The top 3 reasons a Yamaha Dt80 fails its MOT are: 1. Motorcycle lamps and reflectors (13.7%), 2. Motorcycle lighting and signalling (7.3%), 3. Motorcycle brakes (6.5%). Check these areas before booking your MOT.
Is the Yamaha Dt80 reliable?
With a 20.2% MOT failure rate, the Dt80 is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Yamaha Dt80?
Based on failure data, focus on: Motorcycle lamps and reflectors (13.7%); Motorcycle lighting and signalling (7.3%); Motorcycle brakes (6.5%). 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.