Model report · 2005–2025
AJS JSM 50
49cc
Petrol
Class 1
53.8%
first-time pass rate
34.7%
failed outright
5,089
median miles at test
173
MOT tests, 2005–2025
What fails on a JSM 50
failure defects by component group · advisories excluded
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lighting and signalling |
|
43 | 24.4 |
| brakes |
|
37 | 21 |
| steering and suspension |
|
22 | 12.5 |
| lamps and reflectors |
|
18 | 10.2 |
| structure and attachments |
|
15 | 8.5 |
| suspension |
|
15 | 8.5 |
| steering |
|
10 | 5.7 |
| drive system |
|
9 | 5.1 |
| driving controls |
|
4 | 2.3 |
| body and structure |
|
3 | 1.7 |
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 JSM 50 beats 0 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).
PEUGEOT
SPEEDFIGHT
65.2% pass · 83.7k tests
PIAGGIO
ZIP
71.3% pass · 79.0k tests
PIAGGIO
NRG
65.5% pass · 40.5k tests
PEUGEOT
VIVACITY
70.4% pass · 29.7k 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 JSM 50.