Yamaha 660 MOT Pass Rate
Overall pass rate across all manufacture years, based on 178 real MOT test results. Failure rate: 20.8%.
Data from official DVSA MOT testing records
Yamaha 660 MOT Reliability Overview
The Yamaha 660 is a rare vehicle in the UK, with 178 MOT test results recorded in our database spanning 2 manufacture years. It has an overall MOT pass rate of 79.2% and a failure rate of 20.8%, which is well above the UK average of approximately 37%.
Based on this data, the Yamaha 660 earns a "Excellent" reliability rating. The average Yamaha 660 presents for MOT with approximately 21,999 miles on the clock. Manufacture year matters: 2007 models achieve the highest pass rate at 78.4%, while 2005 models have the lowest at 74.5%. This 3.9 percentage point difference suggests notable variation in build quality or component durability across production years.
The most common MOT failure for the Yamaha 660 is Suspension, affecting 6.7% 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 Lamps, Reflectors and Electrical Equipment at 5.6%. Brakes rounds out the top three at 5.6%. 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 | Lamps, Reflectors And Electrical Equipment | 16.8% | 30 |
| 2 | Suspension | 7.3% | 13 |
| 3 | Registration Plates And Vin | 5.6% | 10 |
| 4 | Brakes | 5.6% | 10 |
| 5 | Motorcycle Brakes | 4.5% | 8 |
| 6 | Motorcycle Lighting And Signalling | 3.9% | 7 |
| 7 | Steering | 3.4% | 6 |
| 8 | Identification Of The Vehicle | 2.8% | 5 |
| 9 | Exhaust, Fuel And Emissions | 2.2% | 4 |
| 10 | Driver's View Of The Road | 1.7% | 3 |
| 11 | Motorcycle Lamps And Reflectors | 1.7% | 3 |
| 12 | Motorcycle Steering And Suspension | 1.7% | 3 |
| 13 | Tyres | 1.7% | 3 |
| 14 | Motorcycle Tyres | 0.6% | 1 |
Failures per 10,000 Miles
avg. 21,999 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 |
|---|---|---|---|
| Lamps & Electrical | 7.66 | 16.8% | 30 |
| Suspension | 3.32 | 7.3% | 13 |
| Registration Plates and VIN | 2.55 | 5.6% | 10 |
| Brakes | 2.55 | 5.6% | 10 |
| Motorcycle brakes | 2.04 | 4.5% | 8 |
| Motorcycle lighting and signalling | 1.79 | 3.9% | 7 |
| Steering | 1.53 | 3.4% | 6 |
| Identification of the vehicle | 1.28 | 2.8% | 5 |
| Emissions & Exhaust | 1.02 | 2.2% | 4 |
| Visibility | 0.77 | 1.7% | 3 |
| Motorcycle lamps and reflectors | 0.77 | 1.7% | 3 |
| Motorcycle steering and suspension | 0.77 | 1.7% | 3 |
| Tyres | 0.77 | 1.7% | 3 |
| Motorcycle tyres | 0.26 | 0.6% | 1 |
🚗 Similar Cars to Consider
Mileage at MOT
The average Yamaha 660 has 21,999 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 660 has a mileage-adjusted failure rate of 9.45% per 10,000 miles driven. The average across all makes is 5.38%, so this model is worse than average.
About Yamaha 660 MOT Data
The Yamaha 660 is a rare vehicle in the UK, with 178 MOT test results recorded in our database spanning 2 manufacture years. It has an overall MOT pass rate of 79.2% and a failure rate of 20.8%, which is well above the UK average of approximately 37%.
For Yamaha 660 owners, these results suggest a reliable vehicle that generally passes its MOT without major issues. Focus your pre-MOT checks on suspension and lamps, reflectors and electrical equipment 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 660 is likely to perform.
Suspension — 6.7% of failures
Suspension issues account for 6.7% of MOT failures on the Yamaha 660. 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.
Lamps, Reflectors and Electrical Equipment — 5.6% of failures
Lamps, Reflectors and Electrical Equipment issues account for 5.6% of MOT failures on the Yamaha 660. 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.
Brakes — 5.6% of failures
Brakes issues account for 5.6% of MOT failures on the Yamaha 660. 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 660?
Based on 178 MOT tests in our database, the Yamaha 660 has an overall pass rate of 79.2% (20.8% fail rate).
What are the most common MOT failures on a Yamaha 660?
The top 3 reasons a Yamaha 660 fails its MOT are: 1. Suspension (6.7%), 2. Lamps, Reflectors and Electrical Equipment (5.6%), 3. Brakes (5.6%). Check these areas before booking your MOT.
Is the Yamaha 660 reliable?
With a 20.8% MOT failure rate, the 660 is more reliable than average compared to the UK average of ~40%.
What should I check before an MOT on my Yamaha 660?
Based on failure data, focus on: Suspension (6.7%); Lamps, Reflectors and Electrical Equipment (5.6%); Brakes (5.6%). 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.