Model report · 2005–2025
EASY RIDER ST90
85cc
Petrol
Class 1
67.2%
first-time pass rate
20.3%
failed outright
2,012
median miles at test
256
MOT tests, 2005–2025
What fails on a ST90
failure defects by component group · advisories excluded
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lighting and signalling |
|
66 | 45.5 |
| steering and suspension |
|
33 | 22.8 |
| brakes |
|
10 | 6.9 |
| reg plates and vin |
|
9 | 6.2 |
| lamps and reflectors |
|
8 | 5.5 |
| drive system |
|
7 | 4.8 |
| tyres and wheels |
|
5 | 3.4 |
| body and structure |
|
4 | 2.8 |
| fuel and exhaust |
|
2 | 1.4 |
| Items Not Tested |
|
1 | 0.7 |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.
How rivals compare
same type, similar capacity, high test volume
On first-time pass rate the ST90 beats 1 of its 4 closest rivals (HONDA C90, HONDA SCV100, YAMAHA YQ100).
HONDA
C90
79.3% pass · 92.8k tests
HONDA
SCV100
70.7% pass · 31.3k tests
YAMAHA
YQ100
64.7% pass · 7,747 tests
HONDA
NHX 110 WH-8
80.4% pass · 7,740 tests
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 ST90.
Pass rate by registration year
how each model-year cohort fares · registration year from first use date
Best year to buy used: 2002 (76.0% pass). Weakest: 2003 (67.7%).
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.