YAMAHA TT500
Pass rate over time
The TT500's first-time pass rate has held steady since 2014 (81.1% → 81.4%).
What fails on a TT500
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lighting and signalling |
|
37 | 42.5 |
| steering and suspension |
|
14 | 16.1 |
| brakes |
|
13 | 14.9 |
| tyres and wheels |
|
10 | 11.5 |
| reg plates and vin |
|
5 | 5.7 |
| fuel and exhaust |
|
4 | 4.6 |
| lamps and reflectors |
|
1 | 1.1 |
| drive system |
|
1 | 1.1 |
| structure and attachments |
|
1 | 1.1 |
| body and structure |
|
1 | 1.1 |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.
How rivals compare
On first-time pass rate the TT500 beats 4 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).
Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the TT500.
Pass rate by registration year
Best year to buy used: 1979 (88.9% pass). Weakest: 1978 (79.2%).
First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.