Model report · 2005–2025
YAMAHA SR400
399cc
Petrol
Class 2
83.2%
first-time pass rate
10.0%
failed outright
12,916
median miles at test
340
MOT tests, 2005–2025
Pass rate by mileage
how the SR400's first-time pass rate falls with the odometer · class average 84.9%
A low-mileage SR400 passes first time 88.4% of the time; by 20k that's 77.8%.
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 SR400
failure defects by component group · advisories excluded
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lamps and reflectors |
|
19 | 25 |
| steering and suspension |
|
13 | 17.1 |
| lighting and signalling |
|
11 | 14.5 |
| brakes |
|
7 | 9.2 |
| structure and attachments |
|
6 | 7.9 |
| drive system |
|
5 | 6.6 |
| tyres and wheels |
|
5 | 6.6 |
| Identification of the vehicle |
|
4 | 5.3 |
| driving controls |
|
3 | 3.9 |
| tyres |
|
3 | 3.9 |
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 SR400 beats 3 of its 4 closest rivals (KAWASAKI ER5, SUZUKI GS500, SUZUKI AN400).
KAWASAKI
ER5
77.4% pass · 53.1k tests
SUZUKI
GS500
76.4% pass · 44.9k tests
SUZUKI
AN400
86.2% pass · 27.1k tests
SUZUKI
DR-Z400S
80.4% pass · 26.8k 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 SR400.