Pass rate over time
The XY's first-time pass rate has risen 21.4 points since 2018, 70.3% to 91.7%.
What fails on a XY
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lamps and reflectors |
|
18 | 33.3 | 1.4× |
| tyres |
|
13 | 24.1 | 2.9× |
| structure and attachments |
|
12 | 22.2 | 2.0× |
| brakes |
|
3 | 5.6 | 0.1× |
| steering |
|
3 | 5.6 | 1.1× |
| tyres and wheels |
|
1 | 1.9 | 0.1× |
| Identification of the vehicle |
|
1 | 1.9 | 0.7× |
| wheels |
|
1 | 1.9 | 2.6× |
| audible warning (Horn) |
|
1 | 1.9 | 0.8× |
| body and structure |
|
1 | 1.9 | 0.3× |
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 XY beats 4 of its 4 closest rivals (KAWASAKI ER5, SUZUKI GS500, SUZUKI AN400).
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 XY.
Pass rate by registration year
Best year to buy used: 2015 (86.8% pass). Weakest: 2016 (85.3%).
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.
MASH XY FAQ
Is the MASH XY reliable?
The MASH XY is about average for its class: 86.4% of its 653 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #2089 of 5426 models.
What does a XY fail its MOT on most?
lamps and reflectors — 33% of all defects recorded against failed XY tests.
What is the best year of XY to buy used?
By first-time pass rate, 2015-registered examples do best (86.8%) and 2016 worst (85.3%). Condition and history still trump the year.