Pass rate over time
The XS's first-time pass rate has risen 1.8 points since 2006, 79.8% to 81.6%.
Pass rate by mileage
A low-mileage XS passes first time 79.6% of the time; by 50k that's 80.7%.
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 XS
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lighting and signalling |
|
94 | 27.5 | 1.3× |
| brakes |
|
81 | 23.7 | 1.1× |
| steering and suspension |
|
71 | 20.8 | 1.5× |
| tyres and wheels |
|
27 | 7.9 | 0.9× |
| fuel and exhaust |
|
20 | 5.8 | 1.9× |
| reg plates and vin |
|
15 | 4.4 | 2.2× |
| body and structure |
|
12 | 3.5 | 1.9× |
| lamps and reflectors |
|
8 | 2.3 | 0.3× |
| drive system |
|
8 | 2.3 | 0.9× |
| driving controls |
|
6 | 1.8 | 2.3× |
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 XS beats 2 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).
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 XS.
Pass rate by registration year
Best year to buy used: 1978 (87.4% pass). Weakest: 1979 (73.8%).
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 XS FAQ
Is the YAMAHA XS reliable?
The YAMAHA XS is less reliable than average for its class: 79.4% of its 1,107 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #3704 of 5426 models.
What does a XS fail its MOT on most?
lighting and signalling — 27% of all defects recorded against failed XS tests.
What is the best year of XS to buy used?
By first-time pass rate, 1978-registered examples do best (87.4%) and 1979 worst (73.8%). Condition and history still trump the year.
How many miles will a XS last?
The median XS shows 23,030 miles at test, and examples around 50k miles still pass 80.7% of the time — mileage alone rarely kills one.