Pass rate by mileage
A low-mileage 250N passes first time 88.0% of the time; by 40k that's 71.9%.
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 250N
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lighting and signalling |
|
33 | 28.4 |
| steering and suspension |
|
26 | 22.4 |
| brakes |
|
20 | 17.2 |
| drive system |
|
12 | 10.3 |
| tyres and wheels |
|
10 | 8.6 |
| suspension |
|
5 | 4.3 |
| driving controls |
|
3 | 2.6 |
| fuel and exhaust |
|
3 | 2.6 |
| body and structure |
|
3 | 2.6 |
| wheels |
|
1 | 0.9 |
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 250N beats 1 of its 4 closest rivals (YAMAHA YP250, YAMAHA WR250F, HONDA XR250).
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 250N.
Pass rate by registration year
Best year to buy used: 1980 (84.4% pass). Weakest: 1979 (71.9%).
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.