1986 Yamaha Qt50 MOT Pass Rate
Pass rate for Qt50 models manufactured in 1986, based on 102 real MOT test results.
Data from official DVSA MOT testing records
1986 Yamaha Qt50 MOT Analysis
The 1986 Yamaha Qt50 has an MOT pass rate of 84.3% based on 102 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 3,606 miles on the odometer. With a 15.7% failure rate, the 1986 Qt50 is rated as "Excellent" for MOT reliability.
The leading cause of MOT failure for the 1986 Yamaha Qt50 is Motorcycle suspension, responsible for 1.0% of failures. 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 range from £200–500. Motorcycle tyres is the second most common issue at 1.0%. Motorcycle wheels follows at 1.0%.
Top failures specific to 1986 models only. The overall Qt50 page may show different rankings.
What Fails Most
What Fails on This Car?
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| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Motorcycle Suspension | 1.0% | 1 |
| 2 | Motorcycle Tyres | 1.0% | 1 |
| 3 | Motorcycle Wheels | 1.0% | 1 |
Mileage Statistics
About This Data
The 1986 Yamaha Qt50 has an MOT pass rate of 84.3% based on 102 tests — well above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 3,606 miles on the odometer. With a 15.7% failure rate, the 1986 Qt50 is rated as "Excellent" for MOT reliability.
If you own or are considering buying a 1986 Yamaha Qt50, you can expect reliable MOT performance overall. Before your MOT, pay particular attention to motorcycle suspension: 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. With relatively low average mileage of 3,606 miles, many of these vehicles are still in good mechanical condition.
Motorcycle suspension — 1.0% of failures
Motorcycle suspension issues account for 1.0% of MOT failures on 1986 Yamaha Qt50 models. 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 tyres — 1.0% of failures
Motorcycle tyres issues account for 1.0% of MOT failures on 1986 Yamaha Qt50 models. 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 wheels — 1.0% of failures
Motorcycle wheels issues account for 1.0% of MOT failures on 1986 Yamaha Qt50 models. Wheel failures include cracked or severely corroded alloy wheels, missing or loose wheel nuts, and wheels that are insecurely attached. These are safety-critical and relatively rare compared to tyre failures. Typical repair costs: £100–400 per wheel. Pre-MOT check: Visually inspect wheels for cracks, especially around the spokes and rim. Check that all wheel nuts are present and tightened. Look for signs of impact damage on alloy wheels.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.