Pass rate over time
The A100's first-time pass rate has risen 12.5 points since 2006, 68.6% to 81.1%.
Pass rate by mileage
A low-mileage A100 passes first time 83.1% of the time; by 30k that's 71.2%.
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 A100
| Component group | Share of defects | Defects | % of defects |
|---|---|---|---|
| lighting and signalling |
|
48 | 41.7 |
| steering and suspension |
|
20 | 17.4 |
| tyres and wheels |
|
18 | 15.7 |
| brakes |
|
9 | 7.8 |
| drive system |
|
8 | 7 |
| body and structure |
|
6 | 5.2 |
| reg plates and vin |
|
2 | 1.7 |
| fuel and exhaust |
|
2 | 1.7 |
| tyres |
|
1 | 0.9 |
| driving controls |
|
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 A100 beats 4 of its 4 closest rivals (YAMAHA YBR 125, HONDA C90, HONDA CG125).
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 A100.
Pass rate by registration year
Best year to buy used: 1975 (83.3% pass). Weakest: 1979 (78.9%).
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.