BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025
73.2%
first-time pass rate
18.0%
failed outright
11,550
median miles at test
18.2k
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2008–2025

The FLY's first-time pass rate has risen 6.5 points since 2008, 74.9% to 81.4%.

63%74%85%2008: 74.9% pass (211 tests)2009: 68.7% pass (374 tests)2010: 74.7% pass (590 tests)2011: 72.3% pass (859 tests)2012: 68.7% pass (1,113 tests)2013: 66.9% pass (1,192 tests)2014: 70.2% pass (1,263 tests)2015: 70.2% pass (1,294 tests)2016: 71.0% pass (1,532 tests)2017: 74.1% pass (1,539 tests)2018: 74.8% pass (1,280 tests)2019: 76.7% pass (1,372 tests)2020: 74.5% pass (1,177 tests)2021: 76.5% pass (1,304 tests)2022: 74.1% pass (1,090 tests)2023: 76.4% pass (893 tests)2024: 77.9% pass (578 tests)2025: 81.4% pass (538 tests)20082025

Pass rate by mileage

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

A low-mileage FLY passes first time 78.5% of the time; by 50k that's 62.2%.

59%70%82%0k: 78.5% pass (7,809 tests)10k: 69.5% pass (6,256 tests)20k: 69.4% pass (2,758 tests)30k: 68.3% pass (868 tests)40k: 66.8% pass (298 tests)50k: 62.2% pass (111 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 FLY

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lighting and signalling
1,650 22.7 1.6×
brakes
1,514 20.8 1.5×
steering and suspension
1,008 13.8 1.3×
lamps and reflectors
933 12.8 2.1×
tyres and wheels
773 10.6 1.9×
tyres
510 7 3.6×
suspension
260 3.6 1.5×
structure and attachments
234 3.2 1.5×
steering
208 2.9 2.4×
fuel and exhaust
192 2.6 1.2×

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 FLY beats 0 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 FLY.

Pass rate by registration year

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

Best year to buy used: 2014 (78.7% pass). Weakest: 2008 (67.3%).

65%73%81%2005: 71.7% pass (1,598 tests)2006: 71.7% pass (1,463 tests)2007: 71.2% pass (1,586 tests)2008: 67.3% pass (1,987 tests)2009: 69.5% pass (1,808 tests)2010: 68.5% pass (1,238 tests)2011: 74.0% pass (1,018 tests)2012: 75.6% pass (1,181 tests)2013: 77.2% pass (2,062 tests)2014: 78.7% pass (1,424 tests)2015: 77.1% pass (1,552 tests)2016: 78.6% pass (1,061 tests)2017: 78.4% pass (204 tests)200520112017

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 FLY FAQ

answers computed from the data above · terms in the glossary

Is the PIAGGIO FLY reliable?

The PIAGGIO FLY is about average for its class: 73.2% of its 18,208 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #4478 of 5426 models.

What does a FLY fail its MOT on most?

lighting and signalling — 23% of all defects recorded against failed FLY tests.

What is the best year of FLY to buy used?

By first-time pass rate, 2014-registered examples do best (78.7%) and 2008 worst (67.3%). Condition and history still trump the year.

How many miles will a FLY last?

The median FLY shows 11,550 miles at test, and examples around 50k miles still pass 62.2% of the time — mileage alone rarely kills one.