VESPA (DOUGLAS) P125X
The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.
“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.
Pass rate over time
The P125X's first-time pass rate has risen 5.5 points since 2006, 76.6% to 82.1%.
Pass rate by mileage
A low-mileage P125X passes first time 84.2% of the time; by 40k that's 81.3%.
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 P125X
| Component group | Share of defects | Defects | % of defects | vs all bikes |
|---|---|---|---|---|
| lighting and signalling |
|
113 | 47.3 | 1.6× |
| steering and suspension |
|
36 | 15.1 | 1.1× |
| tyres and wheels |
|
25 | 10.5 | 1.3× |
| brakes |
|
24 | 10 | 0.5× |
| lamps and reflectors |
|
15 | 6.3 | 0.6× |
| reg plates and vin |
|
13 | 5.4 | 2.2× |
| body and structure |
|
4 | 1.7 | 1.1× |
| fuel and exhaust |
|
4 | 1.7 | 0.7× |
| suspension |
|
3 | 1.3 | 0.3× |
| audible warning (Horn) |
|
2 | 0.8 | 1.4× |
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 P125X beats 1 of its 4 closest rivals (PIAGGIO VESPA, HONDA PCX 125, HONDA Vision 110).
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 P125X.
Compare with any bike
More VESPA (DOUGLAS) models
Pass rate by registration year
Best year to buy used: 1980 (84.2% pass). Weakest: 1978 (72.2%).
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.
VESPA (DOUGLAS) P125X FAQ
Is the VESPA (DOUGLAS) P125X reliable?
The VESPA (DOUGLAS) P125X is more reliable than average for its class: 79.4% of its 793 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #3705 of 5428 models.
What does a P125X fail its MOT on most?
lighting and signalling — 47% of all defects recorded against failed P125X tests.
What is the best year of P125X to buy used?
By first-time pass rate, 1980-registered examples do best (84.2%) and 1978 worst (72.2%). Condition and history still trump the year.
How many miles will a P125X last?
The median P125X shows 14,889 miles at test, and examples around 40k miles still pass 81.3% of the time — mileage alone rarely kills one.
Embed this bike
Free to embed on your site, blog or forum — a live Vespa (douglas) P125X reliability card that stays up to date and links back here. More on the free API page.