1986 Yamaha Dt MOT Pass Rate
Pass rate for Dt models manufactured in 1986, based on 31 real MOT test results.
Data from official DVSA MOT testing records
1986 Yamaha Dt MOT Analysis
The 1986 Yamaha Dt has an MOT pass rate of 58.1% based on 31 tests — slightly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 22,494 miles on the odometer. With a 41.9% failure rate, the 1986 Dt is rated as "Below Average" for MOT reliability.
The leading cause of MOT failure for the 1986 Yamaha Dt is Motorcycle brakes, responsible for 3.2% of failures. 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 range from £150–400. Motorcycle wheels is the second most common issue at 3.2%.
Top failures specific to 1986 models only. The overall Dt page may show different rankings.
What Fails Most
What Fails on This Car?
Click a category to see specific failure items.
View as table
| Rank | Failure Category | Rate (%) | Count |
|---|---|---|---|
| 1 | Motorcycle Brakes | 3.2% | 1 |
| 2 | Motorcycle Wheels | 3.2% | 1 |
Failures per 10,000 Miles
avg. 22,494 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 | 1.43 | 3.2% | 1 |
| Motorcycle wheels | 1.43 | 3.2% | 1 |
Mileage Statistics
Mileage-adjusted failure rate — accounts for how much this model year is typically driven.
About This Data
The 1986 Yamaha Dt has an MOT pass rate of 58.1% based on 31 tests — slightly below the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 22,494 miles on the odometer. With a 41.9% failure rate, the 1986 Dt is rated as "Below Average" for MOT reliability.
If you own or are considering buying a 1986 Yamaha Dt, budget for potential repairs before each MOT. Before your MOT, pay particular attention to motorcycle brakes: 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). With relatively low average mileage of 22,494 miles, many of these vehicles are still in good mechanical condition.
Motorcycle brakes — 3.2% of failures
Motorcycle brakes issues account for 3.2% of MOT failures on 1986 Yamaha Dt models. 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 wheels — 3.2% of failures
Motorcycle wheels issues account for 3.2% of MOT failures on 1986 Yamaha Dt 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.