BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025
79.9%
first-time pass rate
12.7%
failed outright
10,926
median miles at test
20.1k
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2025

The PX 125's first-time pass rate has risen 11.9 points since 2005, 73.6% to 85.5%.

71%80%88%2005: 73.6% pass (193 tests)2006: 77.8% pass (1,000 tests)2007: 76.7% pass (1,075 tests)2008: 75.4% pass (1,074 tests)2009: 75.7% pass (1,150 tests)2010: 74.6% pass (1,238 tests)2011: 77.7% pass (1,353 tests)2012: 78.9% pass (1,337 tests)2013: 79.4% pass (1,300 tests)2014: 77.6% pass (1,230 tests)2015: 79.9% pass (1,203 tests)2016: 84.1% pass (1,128 tests)2017: 83.2% pass (1,050 tests)2018: 83.5% pass (780 tests)2019: 83.8% pass (765 tests)2020: 84.0% pass (649 tests)2021: 83.0% pass (842 tests)2022: 83.5% pass (792 tests)2023: 83.3% pass (755 tests)2024: 84.4% pass (576 tests)2025: 85.5% pass (586 tests)20052025

Pass rate by mileage

how the PX 125's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage PX 125 passes first time 82.4% of the time; by 50k that's 80.6%.

75%79%84%0k: 82.4% pass (9,226 tests)10k: 77.7% pass (6,282 tests)20k: 77.6% pass (2,600 tests)30k: 78.9% pass (1,067 tests)40k: 76.1% pass (485 tests)50k: 80.6% pass (170 tests)0k30k50k

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 PX 125

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
2,122 38.3 1.5×
brakes
812 14.7 0.7×
steering and suspension
754 13.6 1.0×
lamps and reflectors
624 11.3 1.1×
tyres and wheels
558 10.1 1.3×
reg plates and vin
193 3.5 1.4×
fuel and exhaust
161 2.9 0.9×
body and structure
119 2.1 1.2×
tyres
105 1.9 0.7×
suspension
87 1.6 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

same type, similar capacity, high test volume

On first-time pass rate the PX 125 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 PX 125.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 1990 (88.5% pass). Weakest: 1979 (68.5%).

65%79%93%1978: 76.3% pass (135 tests)1979: 68.5% pass (143 tests)1980: 79.1% pass (273 tests)1981: 73.9% pass (303 tests)1982: 75.5% pass (493 tests)1983: 79.0% pass (581 tests)1984: 74.5% pass (556 tests)1985: 75.2% pass (404 tests)1986: 76.3% pass (372 tests)1987: 76.1% pass (205 tests)1988: 82.3% pass (175 tests)1989: 71.8% pass (245 tests)1990: 88.5% pass (122 tests)1991: 81.4% pass (86 tests)1992: 78.7% pass (108 tests)1993: 76.0% pass (104 tests)1994: 84.4% pass (211 tests)1995: 72.3% pass (141 tests)1996: 82.1% pass (84 tests)1997: 72.3% pass (148 tests)1998: 79.7% pass (158 tests)1999: 78.7% pass (475 tests)2000: 78.9% pass (1,315 tests)2001: 78.8% pass (1,869 tests)2002: 78.8% pass (2,318 tests)2003: 80.8% pass (2,050 tests)2004: 79.9% pass (1,478 tests)2005: 80.9% pass (1,195 tests)2006: 84.5% pass (1,165 tests)2007: 86.0% pass (1,649 tests)2008: 82.7% pass (1,086 tests)2009: 84.4% pass (90 tests)2011: 85.7% pass (56 tests)2012: 83.6% pass (55 tests)197819952012

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.

PIAGGIO PX 125 FAQ

answers computed from the data above · terms in the glossary

Is the PIAGGIO PX 125 reliable?

The PIAGGIO PX 125 is more reliable than average for its class: 79.9% of its 20,076 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #3601 of 5426 models.

What does a PX 125 fail its MOT on most?

lighting and signalling — 38% of all defects recorded against failed PX 125 tests.

What is the best year of PX 125 to buy used?

By first-time pass rate, 1990-registered examples do best (88.5%) and 1979 worst (68.5%). Condition and history still trump the year.

How many miles will a PX 125 last?

The median PX 125 shows 10,926 miles at test, and examples around 50k miles still pass 80.6% of the time — mileage alone rarely kills one.