Yamaha Xt 660 R MOT Pass Rate
Overall pass rate across all manufacture years, based on 3,286 real MOT test results. Failure rate: 13.1%.
Data from official DVSA MOT testing records
Yamaha Xt 660 R MOT Reliability Overview
The Yamaha Xt 660 R is a niche vehicle in the UK, with 3,286 MOT test results recorded in our database spanning 10 manufacture years. It has an overall MOT pass rate of 86.9% and a failure rate of 13.1%, which is well above the UK average of approximately 37%.
Based on this data, the Yamaha Xt 660 R earns a "Excellent" reliability rating. The average Yamaha Xt 660 R presents for MOT with approximately 14,459 miles on the clock. Manufacture year matters: 2013 models achieve the highest pass rate at 91.1%, while 2006 models have the lowest at 83.6%. This 7.5 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Yamaha Xt 660 R is Motorcycle brakes, affecting 5.4% of all tests. 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. The second most common issue is Motorcycle lighting and signalling at 4.8%. Motorcycle steering and suspension rounds out the top three at 3.3%. 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
📉 How Age Affects Reliability
MOT failure rate by vehicle age for the Yamaha Xt 660 R. The dashed red line marks when the manufacturer warranty typically expires (3 years).
Line chart showing MOT failure rate by vehicle age from 3 to 9 years, with warranty expiry marked at 3 years.
💡 What does the warranty cliff mean?
The Yamaha Xt 660 R actually sees a 23% decrease in failure rate after the warranty period. This is likely due to survivorship bias — unreliable cars are already off the road by this age. Peak failure occurs at age 3 (15.1% fail rate).
Note: pass rates may improve for very old vehicles due to survivorship bias — only well-maintained cars remain on the road.
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 Brakes | 5.6% | 185 |
| 2 | Motorcycle Lighting And Signalling | 5.1% | 167 |
| 3 | Motorcycle Steering And Suspension | 3.8% | 124 |
| 4 | Motorcycle Tyres And Wheels | 2.9% | 94 |
| 5 | Motorcycle Lamps And Reflectors | 2.9% | 94 |
| 6 | Motorcycle Drive System | 2.8% | 91 |
| 7 | Motorcycle Structure And Attachments | 1.9% | 64 |
| 8 | Motorcycle Suspension | 1.4% | 47 |
| 9 | Motorcycle Tyres | 1.1% | 37 |
| 10 | Motorcycle Reg Plates And Vin | 0.7% | 22 |
| 11 | Motorcycle Fuel And Exhaust | 0.5% | 17 |
| 12 | Motorcycle Steering | 0.5% | 15 |
| 13 | Motorcycle Audible Warning (Horn) | 0.4% | 13 |
| 14 | Identification Of The Vehicle | 0.4% | 12 |
| 15 | Motorcycle Wheels | 0.3% | 9 |
Failures per 10,000 Miles
avg. 14,459 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 brakes | 3.89 | 5.6% | 185 |
| Motorcycle lighting and signalling | 3.51 | 5.1% | 167 |
| Motorcycle steering and suspension | 2.61 | 3.8% | 124 |
| Motorcycle tyres and wheels | 1.98 | 2.9% | 94 |
| Motorcycle lamps and reflectors | 1.98 | 2.9% | 94 |
| Motorcycle drive system | 1.92 | 2.8% | 91 |
| Motorcycle structure and attachments | 1.35 | 1.9% | 64 |
| Motorcycle suspension | 0.99 | 1.4% | 47 |
| Motorcycle tyres | 0.78 | 1.1% | 37 |
| Motorcycle reg plates and vin | 0.46 | 0.7% | 22 |
| Motorcycle fuel and exhaust | 0.36 | 0.5% | 17 |
| Motorcycle steering | 0.32 | 0.5% | 15 |
| Motorcycle audible warning (Horn) | 0.27 | 0.4% | 13 |
| Identification of the vehicle | 0.25 | 0.4% | 12 |
| Motorcycle wheels | 0.19 | 0.3% | 9 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Yamaha Xt 660 R has 14,459 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 Xt 660 R has a mileage-adjusted failure rate of 9.06% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Yamaha Xt 660 R MOT Data
The Yamaha Xt 660 R is a niche vehicle in the UK, with 3,286 MOT test results recorded in our database spanning 10 manufacture years. It has an overall MOT pass rate of 86.9% and a failure rate of 13.1%, which is well above the UK average of approximately 37%.
For Yamaha Xt 660 R owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on motorcycle brakes 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 Xt 660 R is likely to perform.
Motorcycle brakes — 5.4% of failures
Motorcycle brakes issues account for 5.4% of MOT failures on the Yamaha Xt 660 R. 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).
Motorcycle lighting and signalling — 4.8% of failures
Motorcycle lighting and signalling issues account for 4.8% of MOT failures on the Yamaha Xt 660 R. 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 — 3.3% of failures
Motorcycle steering and suspension issues account for 3.3% of MOT failures on the Yamaha Xt 660 R. 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 Xt 660 R?
Based on 3,286 MOT tests in our database, the Yamaha Xt 660 R has an overall pass rate of 86.9% (13.1% fail rate).
What are the most common MOT failures on a Yamaha Xt 660 R?
The top 3 reasons a Yamaha Xt 660 R fails its MOT are: 1. Motorcycle brakes (5.4%), 2. Motorcycle lighting and signalling (4.8%), 3. Motorcycle steering and suspension (3.3%). Check these areas before booking your MOT.
Is the Yamaha Xt 660 R reliable?
With a 13.1% MOT failure rate, the Xt 660 R is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Yamaha Xt 660 R?
Based on failure data, focus on: Motorcycle brakes (5.4%); Motorcycle lighting and signalling (4.8%); Motorcycle steering and suspension (3.3%). 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.