Model report · 2005–2025
AJS AJS
350cc
Petrol
Class 2
84.8%
first-time pass rate
8.9%
failed outright
15,525
median miles at test
191
MOT tests, 2005–2025
Pass rate by mileage
how the AJS's first-time pass rate falls with the odometer · class average 84.9%
A low-mileage AJS passes first time 90.7% of the time; by 20k that's 85.3%.
First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.
What fails on a AJS
failure defects by component group · advisories excluded
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lighting and signalling |
|
13 | 33.3 |
| brakes |
|
6 | 15.4 |
| lamps and reflectors |
|
4 | 10.3 |
| structure and attachments |
|
3 | 7.7 |
| tyres |
|
3 | 7.7 |
| suspension |
|
2 | 5.1 |
| body and structure |
|
2 | 5.1 |
| drive system |
|
2 | 5.1 |
| fuel and exhaust |
|
2 | 5.1 |
| steering |
|
2 | 5.1 |
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 AJS beats 2 of its 4 closest rivals (SUZUKI AN400, SUZUKI DR-Z400S, YAMAHA RD350).
SUZUKI
AN400
86.2% pass · 27.1k tests
SUZUKI
DR-Z400S
80.4% pass · 26.8k tests
YAMAHA
RD350
86.3% pass · 19.6k tests
KAWASAKI
ZXR400
73.1% pass · 14.2k 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 AJS.