Yamaha Dt 50 Sm MOT Pass Rate
Overall pass rate across all manufacture years, based on 51 real MOT test results. Failure rate: 52.9%.
Data from official DVSA MOT testing records
Yamaha Dt 50 Sm MOT Reliability Overview
The Yamaha Dt 50 Sm is a rare vehicle in the UK, with 51 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 47.1% and a failure rate of 52.9%, which is significantly below the UK average of approximately 37%.
Based on this data, the Yamaha Dt 50 Sm earns a "Very Poor" reliability rating. The average Yamaha Dt 50 Sm presents for MOT with approximately 6,954 miles on the clock.
The most common MOT failure for the Yamaha Dt 50 Sm is Motorcycle lighting and signalling, affecting 51.0% 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 steering and suspension at 43.1%. Motorcycle drive system rounds out the top three at 31.4%. 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 Lighting And Signalling | 98.0% | 50 |
| 2 | Motorcycle Steering And Suspension | 62.7% | 32 |
| 3 | Motorcycle Brakes | 43.1% | 22 |
| 4 | Motorcycle Drive System | 39.2% | 20 |
| 5 | Motorcycle Tyres And Wheels | 11.8% | 6 |
| 6 | Motorcycle Fuel And Exhaust | 9.8% | 5 |
| 7 | Motorcycle Reg Plates And Vin | 9.8% | 5 |
| 8 | Motorcycle Structure And Attachments | 5.9% | 3 |
| 9 | Motorcycle Body And Structure | 5.9% | 3 |
| 10 | Motorcycle Driving Controls | 5.9% | 3 |
| 11 | Motorcycle Lamps And Reflectors | 3.9% | 2 |
| 12 | Motorcycle Suspension | 2.0% | 1 |
Failures per 10,000 Miles
avg. 6,954 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 | 140.98 | 98.0% | 50 |
| Motorcycle steering and suspension | 90.23 | 62.7% | 32 |
| Motorcycle brakes | 62.03 | 43.1% | 22 |
| Motorcycle drive system | 56.39 | 39.2% | 20 |
| Motorcycle tyres and wheels | 16.92 | 11.8% | 6 |
| Motorcycle fuel and exhaust | 14.10 | 9.8% | 5 |
| Motorcycle reg plates and vin | 14.10 | 9.8% | 5 |
| Motorcycle structure and attachments | 8.46 | 5.9% | 3 |
| Motorcycle body and structure | 8.46 | 5.9% | 3 |
| Motorcycle driving controls | 8.46 | 5.9% | 3 |
| Motorcycle lamps and reflectors | 5.64 | 3.9% | 2 |
| Motorcycle suspension | 2.82 | 2.0% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Yamaha Dt 50 Sm has 6,954 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 Dt 50 Sm has a mileage-adjusted failure rate of 76.07% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Yamaha Dt 50 Sm MOT Data
The Yamaha Dt 50 Sm is a rare vehicle in the UK, with 51 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 47.1% and a failure rate of 52.9%, which is significantly below the UK average of approximately 37%.
For Yamaha Dt 50 Sm owners, these results suggest above-average failure risk — thorough pre-MOT checks are recommended. Focus your pre-MOT checks on motorcycle lighting and signalling and motorcycle steering and suspension 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 Dt 50 Sm is likely to perform.
Motorcycle lighting and signalling — 51.0% of failures
Motorcycle lighting and signalling issues account for 51.0% of MOT failures on the Yamaha Dt 50 Sm. 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 steering and suspension — 43.1% of failures
Motorcycle steering and suspension issues account for 43.1% of MOT failures on the Yamaha Dt 50 Sm. Suspension failures typically involve worn bushes, leaking shock absorbers, broken coil springs, and damaged suspension arms. These affect ride quality, tyre wear, and road holding. Typical repair costs: £200–500. Pre-MOT check: Look for uneven tyre wear, listen for clunking over bumps, and check if the car pulls to one side. A bouncy ride suggests worn shock absorbers. Visually inspect coil springs for cracks.
Motorcycle drive system — 31.4% of failures
Motorcycle drive system issues account for 31.4% of MOT failures on the Yamaha Dt 50 Sm. Motorcycle drive system 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.
Frequently Asked Questions
What is the MOT pass rate for the Yamaha Dt 50 Sm?
Based on 51 (based on limited data) MOT tests in our database, the Yamaha Dt 50 Sm has an overall pass rate of 47.1% (52.9% fail rate).
What are the most common MOT failures on a Yamaha Dt 50 Sm?
The top 3 reasons a Yamaha Dt 50 Sm fails its MOT are: 1. Motorcycle lighting and signalling (51.0%), 2. Motorcycle steering and suspension (43.1%), 3. Motorcycle drive system (31.4%). Check these areas before booking your MOT.
Is the Yamaha Dt 50 Sm reliable?
With a 52.9% MOT failure rate, the Dt 50 Sm is less reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Yamaha Dt 50 Sm?
Based on failure data, focus on: Motorcycle lighting and signalling (51.0%); Motorcycle steering and suspension (43.1%); Motorcycle drive system (31.4%). 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.