PIAGGIO ZI

49cc Petrol Class 1

#5033 of 5426 overall #135 of 136 PIAGGIOs #333 of 455 moped bikes

64.6%

first-time pass rate

28.9%

failed outright

9,791

median miles at test

277

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2009

The ZI's first-time pass rate has fallen 2.7 points since 2006, 67.2% to 64.5%.

Pass rate by mileage

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

A low-mileage ZI passes first time 74.3% of the time; by 20k that's 58.1%.

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 ZI

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	94	39.5
steering and suspension	66	27.7
brakes	38	16
fuel and exhaust	17	7.1
tyres and wheels	16	6.7
reg plates and vin	3	1.3
body and structure	2	0.8
driving controls	1	0.4
Items Not Tested	1	0.4

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the ZI beats 0 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 ZI.

Pass rate by registration year

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

Best year to buy used: 2001 (74.2% pass). Weakest: 2002 (56.6%).

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.