PIAGGIO PK50

50cc Petrol Class 1

#3950 of 5426 overall #89 of 136 PIAGGIOs #97 of 455 moped bikes

77.7%

first-time pass rate

14.7%

failed outright

13,935

median miles at test

605

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2017

The PK50's first-time pass rate has risen 19.1 points since 2006, 68.8% to 87.9%.

Pass rate by mileage

how the PK50's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage PK50 passes first time 74.0% of the time; by 30k that's 73.7%.

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 PK50

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	98	45	2.2×
brakes	45	20.6	1.4×
steering and suspension	36	16.5	1.4×
tyres and wheels	11	5	0.8×
lamps and reflectors	9	4.1	0.5×
reg plates and vin	6	2.8	1.2×
fuel and exhaust	4	1.8	0.7×
driving controls	4	1.8	2.1×
Identification of the vehicle	3	1.4	1.4×
Items Not Tested	2	0.9	3.6×

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 PK50 beats 4 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

PEUGEOT SPEEDFIGHT 65.2% pass · 83.7k tests PIAGGIO ZIP 71.3% pass · 79.0k tests PIAGGIO NRG 65.5% pass · 40.5k tests PEUGEOT VIVACITY 70.4% pass · 29.7k tests

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 PK50.

Pass rate by registration year

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

Best year to buy used: 1985 (84.3% pass). Weakest: 1990 (80.8%).

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.

PIAGGIO PK50 FAQ

answers computed from the data above · terms in the glossary

Is the PIAGGIO PK50 reliable?

The PIAGGIO PK50 is more reliable than average for its class: 77.7% of its 605 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #3950 of 5426 models.

What does a PK50 fail its MOT on most?

lighting and signalling — 45% of all defects recorded against failed PK50 tests.

What is the best year of PK50 to buy used?

By first-time pass rate, 1985-registered examples do best (84.3%) and 1990 worst (80.8%). Condition and history still trump the year.

How many miles will a PK50 last?

The median PK50 shows 13,935 miles at test, and examples around 30k miles still pass 73.7% of the time — mileage alone rarely kills one.