Pass rate over time
The 300's first-time pass rate has fallen 2.0 points since 2019, 82.8% to 80.8%.
What fails on a 300
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lamps and reflectors |
|
148 | 41.2 | 4.4× |
| suspension |
|
58 | 16.2 | 6.0× |
| audible warning (Horn) |
|
43 | 12 | 23.1× |
| Identification of the vehicle |
|
36 | 10 | 14.5× |
| tyres |
|
30 | 8.4 | 3.0× |
| structure and attachments |
|
15 | 4.2 | 1.6× |
| brakes |
|
12 | 3.3 | 0.2× |
| steering |
|
8 | 2.2 | 1.7× |
| lighting and signalling |
|
6 | 1.7 | 0.1× |
| steering and suspension |
|
3 | 0.8 | 0.1× |
Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.
How rivals compare
On first-time pass rate the 300 beats 1 of its 4 closest rivals (SUZUKI AN400, YAMAHA RD350, YAMAHA YP250).
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 300.
Pass rate by registration year
Best year to buy used: 2020 (86.1% pass). Weakest: 2014 (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.
SHERCO 300 FAQ
Is the SHERCO 300 reliable?
The SHERCO 300 is less reliable than average for its class: 80.2% of its 1,018 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #3531 of 5426 models.
What does a 300 fail its MOT on most?
lamps and reflectors — 41% of all defects recorded against failed 300 tests.
What is the best year of 300 to buy used?
By first-time pass rate, 2020-registered examples do best (86.1%) and 2014 worst (71.9%). Condition and history still trump the year.