YAMAHA X-MAX 300
Pass rate over time
The X-MAX 300's first-time pass rate has fallen 5.0 points since 2020, 96.7% to 91.7%.
Pass rate by mileage
A low-mileage X-MAX 300 passes first time 95.4% of the time; by 50k that's 91.4%.
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 X-MAX 300
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| brakes |
|
131 | 52 | 0.8× |
| tyres |
|
49 | 19.4 | 2.1× |
| lamps and reflectors |
|
27 | 10.7 | 0.5× |
| suspension |
|
17 | 6.7 | 0.6× |
| steering |
|
14 | 5.6 | 0.8× |
| structure and attachments |
|
7 | 2.8 | 0.2× |
| Identification of the vehicle |
|
6 | 2.4 | 0.7× |
| wheels |
|
1 | 0.4 | 0.5× |
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 X-MAX 300 beats 4 of its 4 closest rivals (YAMAHA RD350, YAMAHA YP250, YAMAHA WR250F).
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 X-MAX 300.
Pass rate by registration year
Best year to buy used: 2018 (94.2% pass). Weakest: 2021 (92.1%).
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.
YAMAHA X-MAX 300 FAQ
Is the YAMAHA X-MAX 300 reliable?
The YAMAHA X-MAX 300 is more reliable than average for its class: 93.2% of its 3,186 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #263 of 5426 models.
What does a X-MAX 300 fail its MOT on most?
brakes — 52% of all defects recorded against failed X-MAX 300 tests.
What is the best year of X-MAX 300 to buy used?
By first-time pass rate, 2018-registered examples do best (94.2%) and 2021 worst (92.1%). Condition and history still trump the year.
How many miles will a X-MAX 300 last?
The median X-MAX 300 shows 9,843 miles at test, and examples around 50k miles still pass 91.4% of the time — mileage alone rarely kills one.