Yamaha Sr400 MOT Pass Rate
Overall pass rate across all manufacture years, based on 189 real MOT test results. Failure rate: 15.3%.
Data from official DVSA MOT testing records
Yamaha Sr400 MOT Reliability Overview
The Yamaha Sr400 is a rare vehicle in the UK, with 189 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 84.7% and a failure rate of 15.3%, which is well above the UK average of approximately 37%.
Based on this data, the Yamaha Sr400 earns a "Excellent" reliability rating. The average Yamaha Sr400 presents for MOT with approximately 17,031 miles on the clock.
The most common MOT failure for the Yamaha Sr400 is Motorcycle steering and suspension, affecting 4.8% of all tests. 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. The second most common issue is Motorcycle lamps and reflectors at 4.2%. Motorcycle lighting and signalling rounds out the top three at 4.2%. 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 Steering And Suspension | 4.8% | 9 |
| 2 | Motorcycle Lighting And Signalling | 4.2% | 8 |
| 3 | Motorcycle Lamps And Reflectors | 4.2% | 8 |
| 4 | Motorcycle Brakes | 3.7% | 7 |
| 5 | Motorcycle Structure And Attachments | 2.6% | 5 |
| 6 | Motorcycle Tyres And Wheels | 2.1% | 4 |
| 7 | Motorcycle Tyres | 2.1% | 4 |
| 8 | Identification Of The Vehicle | 2.1% | 4 |
| 9 | Motorcycle Drive System | 1.6% | 3 |
| 10 | Motorcycle Steering | 1.1% | 2 |
| 11 | Motorcycle Suspension | 0.5% | 1 |
| 12 | Motorcycle Wheels | 0.5% | 1 |
| 13 | Motorcycle Reg Plates And Vin | 0.5% | 1 |
Failures per 10,000 Miles
avg. 17,031 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 steering and suspension | 2.80 | 4.8% | 9 |
| Motorcycle lighting and signalling | 2.49 | 4.2% | 8 |
| Motorcycle lamps and reflectors | 2.49 | 4.2% | 8 |
| Motorcycle brakes | 2.17 | 3.7% | 7 |
| Motorcycle structure and attachments | 1.55 | 2.6% | 5 |
| Motorcycle tyres and wheels | 1.24 | 2.1% | 4 |
| Motorcycle tyres | 1.24 | 2.1% | 4 |
| Identification of the vehicle | 1.24 | 2.1% | 4 |
| Motorcycle drive system | 0.93 | 1.6% | 3 |
| Motorcycle steering | 0.62 | 1.1% | 2 |
| Motorcycle suspension | 0.31 | 0.5% | 1 |
| Motorcycle wheels | 0.31 | 0.5% | 1 |
| Motorcycle reg plates and vin | 0.31 | 0.5% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Yamaha Sr400 has 17,031 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 Sr400 has a mileage-adjusted failure rate of 8.98% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Yamaha Sr400 MOT Data
The Yamaha Sr400 is a rare vehicle in the UK, with 189 MOT test results recorded in our database spanning 0 manufacture years. It has an overall MOT pass rate of 84.7% and a failure rate of 15.3%, which is well above the UK average of approximately 37%.
For Yamaha Sr400 owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle steering and suspension 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 Sr400 is likely to perform.
Motorcycle steering and suspension — 4.8% of failures
Motorcycle steering and suspension issues account for 4.8% of MOT failures on the Yamaha Sr400. 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 lamps and reflectors — 4.2% of failures
Motorcycle lamps and reflectors issues account for 4.2% of MOT failures on the Yamaha Sr400. 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 — 4.2% of failures
Motorcycle lighting and signalling issues account for 4.2% of MOT failures on the Yamaha Sr400. 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.
Frequently Asked Questions
What is the MOT pass rate for the Yamaha Sr400?
Based on 189 MOT tests in our database, the Yamaha Sr400 has an overall pass rate of 84.7% (15.3% fail rate).
What are the most common MOT failures on a Yamaha Sr400?
The top 3 reasons a Yamaha Sr400 fails its MOT are: 1. Motorcycle steering and suspension (4.8%), 2. Motorcycle lamps and reflectors (4.2%), 3. Motorcycle lighting and signalling (4.2%). Check these areas before booking your MOT.
Is the Yamaha Sr400 reliable?
With a 15.3% MOT failure rate, the Sr400 is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Yamaha Sr400?
Based on failure data, focus on: Motorcycle steering and suspension (4.8%); Motorcycle lamps and reflectors (4.2%); Motorcycle lighting and signalling (4.2%). 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.