Yamaha Rd400f MOT Pass Rate
Overall pass rate across all manufacture years, based on 58 real MOT test results. Failure rate: 10.3%.
Data from official DVSA MOT testing records
Yamaha Rd400f MOT Reliability Overview
The Yamaha Rd400f is a rare vehicle in the UK, with 58 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 89.7% and a failure rate of 10.3%, which is well above the UK average of approximately 37%.
Based on this data, the Yamaha Rd400f earns a "Excellent" reliability rating. The average Yamaha Rd400f presents for MOT with approximately 24,853 miles on the clock. The 1980 manufacture year performs best with a 87.2% pass rate.
The most common MOT failure for the Yamaha Rd400f is Motorcycle lighting and signalling, affecting 8.6% 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 tyres and wheels at 3.4%. Motorcycle steering and suspension rounds out the top three at 1.7%. 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 Lighting And Signalling | 8.6% | 5 |
| 2 | Motorcycle Tyres And Wheels | 5.2% | 3 |
| 3 | Motorcycle Steering And Suspension | 1.7% | 1 |
| 4 | Motorcycle Brakes | 1.7% | 1 |
Failures per 10,000 Miles
avg. 24,853 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 | 3.47 | 8.6% | 5 |
| Motorcycle tyres and wheels | 2.08 | 5.2% | 3 |
| Motorcycle steering and suspension | 0.69 | 1.7% | 1 |
| Motorcycle brakes | 0.69 | 1.7% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Yamaha Rd400f has 24,853 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 Rd400f has a mileage-adjusted failure rate of 4.14% per 10,000 miles driven. The average across all makes is 5.38%, so this model is better than average.
About Yamaha Rd400f MOT Data
The Yamaha Rd400f is a rare vehicle in the UK, with 58 MOT test results recorded in our database spanning 1 manufacture years. It has an overall MOT pass rate of 89.7% and a failure rate of 10.3%, which is well above the UK average of approximately 37%.
For Yamaha Rd400f owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle lighting and signalling and motorcycle tyres and wheels 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 Rd400f is likely to perform.
Motorcycle lighting and signalling — 8.6% of failures
Motorcycle lighting and signalling issues account for 8.6% of MOT failures on the Yamaha Rd400f. 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 tyres and wheels — 3.4% of failures
Motorcycle tyres and wheels issues account for 3.4% of MOT failures on the Yamaha Rd400f. Tyre failures include tread depth below the legal minimum of 1.6mm, cuts, bulges, exposed cords, and incorrect tyre pressure. Tyres are one of the most common and easiest-to-prevent MOT failures. Typical repair costs: £50–200 per tyre. Pre-MOT check: Check tread depth with a 20p coin — if the outer band is visible, the tyre is too worn. Look for bulges, cuts, or embedded objects. Ensure all tyres match the recommended size and load rating.
Motorcycle steering and suspension — 1.7% of failures
Motorcycle steering and suspension issues account for 1.7% of MOT failures on the Yamaha Rd400f. 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.
Frequently Asked Questions
What is the MOT pass rate for the Yamaha Rd400f?
Based on 58 (based on limited data) MOT tests in our database, the Yamaha Rd400f has an overall pass rate of 89.7% (10.3% fail rate).
What are the most common MOT failures on a Yamaha Rd400f?
The top 3 reasons a Yamaha Rd400f fails its MOT are: 1. Motorcycle lighting and signalling (8.6%), 2. Motorcycle tyres and wheels (3.4%), 3. Motorcycle steering and suspension (1.7%). Check these areas before booking your MOT.
Is the Yamaha Rd400f reliable?
With a 10.3% MOT failure rate, the Rd400f is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Yamaha Rd400f?
Based on failure data, focus on: Motorcycle lighting and signalling (8.6%); Motorcycle tyres and wheels (3.4%); Motorcycle steering and suspension (1.7%). 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.