1999 Yamaha Yn50 — MOT History by Age
How cars manufactured in 1999 perform at MOT as they age
Data from official DVSA MOT testing records
Compared to Average at Age 18
✅ 14.7% above average (8383 models compared)
How This Car Ages
Pass rate progression for the 1999 Yamaha Yn50 as it ages.
Bar chart showing pass rate by car age from 10 to 18 years
📊 View as table
| Age | Pass Rate | Tests |
|---|---|---|
| 10 yrs | 68.6% | 172 |
| 11 yrs | 69.0% | 142 |
| 12 yrs | 63.0% | 127 |
| 13 yrs | 64.3% | 112 |
| 14 yrs | 59.6% | 104 |
| 15 yrs | 57.9% | 76 |
| 16 yrs | 57.1% | 56 |
| 17 yrs | 71.4% | 42 |
| 18 yrs | 69.0% | 42 |
Pass Rate Trend
How the 1999 Yamaha Yn50 pass rate changes as it ages, from first MOT to most recent.
Trend shows improving over 9 years
📊 View as table
| Built | Pass Rate | Tests |
|---|---|---|
| 2017 (18 yrs) | 69% | 42 |
| 2016 (17 yrs) | 71.4% | 42 |
| 2015 (16 yrs) | 57.1% | 56 |
| 2014 (15 yrs) | 57.9% | 76 |
| 2013 (14 yrs) | 59.6% | 104 |
| 2012 (13 yrs) | 64.3% | 112 |
| 2011 (12 yrs) | 63% | 127 |
| 2010 (11 yrs) | 69% | 142 |
| 2009 (10 yrs) | 68.6% | 172 |
Year-by-Year MOT Results
Common MOT Failures
Top failure categories across all test years for 1999 Yamaha Yn50, with age trends.
How Failures Change With Age
Comparing failure rates between the youngest and oldest test years.
| Category | At Youngest | At Oldest | Change | Trend |
|---|---|---|---|---|
| Motorcycle lighting and signalling | 22.1% (10 yrs) | 35.7% (18 yrs) | +13.6%
| 🔴 ↑ |
| Motorcycle tyres and wheels | 5.2% (10 yrs) | 14.3% (18 yrs) | +9.1%
| 🔴 ↑ |
| Motorcycle steering and suspension | 15.7% (10 yrs) | 9.5% (18 yrs) | -6.2%
| 🟢 ↓ |
| Motorcycle brakes | 9.3% (10 yrs) | 11.9% (18 yrs) | +2.6%
| 🔴 ↑ |
| Motorcycle fuel and exhaust | 6.4% (10 yrs) | 7.1% (18 yrs) | +0.7%
| ⚪ — |
Other Manufacture Years
Looking for the best year to buy? See the full comparison on the Yamaha Yn50 page →
About This Data
This page shows how Yamaha Yn50 cars manufactured in 1999 perform at MOT as they age. Data spans from 2009 to 2017, covering 873 tests. Pass rates naturally decline with age as components wear.
Based on DVSA anonymised MOT test data (2005–2024). Crown copyright, Open Government Licence v3.0.