GILERA GSM

49cc Petrol Class 1

#5352 of 5426 overall #26 of 28 GILERAs #417 of 455 moped bikes

53.7%

first-time pass rate

33.0%

failed outright

9,708

median miles at test

793

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2013

The GSM's first-time pass rate has fallen 11.6 points since 2006, 60.3% to 48.7%.

Pass rate by mileage

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

A low-mileage GSM passes first time 58.7% of the time; by 20k that's 57.8%.

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 GSM

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	538	44.5	6.5×
steering and suspension	215	17.8	5.8×
brakes	164	13.6	3.1×
drive system	84	6.9	10.7×
tyres and wheels	59	4.9	3.2×
body and structure	49	4.1	10.8×
fuel and exhaust	48	4	6.8×
reg plates and vin	25	2.1	5.1×
driving controls	19	1.6	9.1×
lamps and reflectors	8	0.7	0.3×

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 GSM 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 GSM.

Pass rate by registration year

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

Best year to buy used: 2001 (57.5% pass). Weakest: 2003 (50.7%).

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.

GILERA GSM FAQ

answers computed from the data above · terms in the glossary

Is the GILERA GSM reliable?

The GILERA GSM is less reliable than average for its class: 53.7% of its 793 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #5352 of 5426 models.

What does a GSM fail its MOT on most?

lighting and signalling — 44% of all defects recorded against failed GSM tests.

What is the best year of GSM to buy used?

By first-time pass rate, 2001-registered examples do best (57.5%) and 2003 worst (50.7%). Condition and history still trump the year.

How many miles will a GSM last?

The median GSM shows 9,708 miles at test, and examples around 20k miles still pass 57.8% of the time — mileage alone rarely kills one.