2004 Yamaha Yz MOT Pass Rate
Pass rate for Yz models manufactured in 2004, based on 103 real MOT test results.
Data from official DVSA MOT testing records
This page shows all Yz cars tested in 2004. Want to see how cars built in 2004 hold up over time?
View 2004 Yamaha Yz vintage page → (70.6% current pass rate)2004 Yamaha Yz MOT Analysis
The 2004 Yamaha Yz has an MOT pass rate of 69.9% based on 103 tests — slightly above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 2,673 miles on the odometer. With a 30.1% failure rate, the 2004 Yz is rated as "Good" for MOT reliability.
The leading cause of MOT failure for the 2004 Yamaha Yz is Motorcycle brakes, responsible for 31.1% 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 suspension is the second most common issue at 16.5%. Motorcycle lamps and reflectors follows at 15.5%.
Top failures specific to 2004 models only. The overall Yz 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 | 31.1% | 32 |
| 2 | Motorcycle Suspension | 16.5% | 17 |
| 3 | Motorcycle Lamps And Reflectors | 15.5% | 16 |
| 4 | Motorcycle Steering | 9.7% | 10 |
| 5 | Motorcycle Wheels | 8.7% | 9 |
| 6 | Motorcycle Tyres | 3.9% | 4 |
| 7 | Motorcycle Structure And Attachments | 1.9% | 2 |
| 8 | Motorcycle Audible Warning (Horn) | 1.0% | 1 |
Mileage Statistics
About This Data
The 2004 Yamaha Yz has an MOT pass rate of 69.9% based on 103 tests — slightly above the UK average for UK vehicles. Cars of this vintage present for MOT with an average of 2,673 miles on the odometer. With a 30.1% failure rate, the 2004 Yz is rated as "Good" for MOT reliability.
If you own or are considering buying a 2004 Yamaha Yz, you can expect reliable MOT performance overall. 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 2,673 miles, many of these vehicles are still in good mechanical condition.
Motorcycle brakes — 31.1% of failures
Motorcycle brakes issues account for 31.1% of MOT failures on 2004 Yamaha Yz 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 suspension — 16.5% of failures
Motorcycle suspension issues account for 16.5% of MOT failures on 2004 Yamaha Yz 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 lamps and reflectors — 15.5% of failures
Motorcycle lamps and reflectors issues account for 15.5% of MOT failures on 2004 Yamaha Yz models. 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.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.