BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025
84.4%
first-time pass rate
10.6%
failed outright
2,627
median miles at test
3,325
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2021–2025

The GT 125i's first-time pass rate has risen 3.1 points since 2021, 82.5% to 85.6%.

81%85%88%2021: 82.5% pass (349 tests)2022: 83.5% pass (528 tests)2023: 82.4% pass (784 tests)2024: 86.6% pass (843 tests)2025: 85.6% pass (818 tests)20212025

What fails on a GT 125i

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lamps and reflectors
204 29.7 2.7×
brakes
126 18.4 0.6×
steering
125 18.2 8.1×
tyres
81 11.8 3.2×
suspension
74 10.8 2.7×
structure and attachments
39 5.7 1.4×
Identification of the vehicle
22 3.2 2.9×
audible warning (Horn)
12 1.7 2.0×
wheels
3 0.4 1.5×

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 GT 125i beats 4 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 GT 125i.

Pass rate by registration year

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

Best year to buy used: 2021 (87.5% pass). Weakest: 2018 (82.1%).

81%85%89%2018: 82.1% pass (1,459 tests)2019: 84.5% pass (735 tests)2020: 87.2% pass (823 tests)2021: 87.5% pass (304 tests)201820202021

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.

ROYAL ALLOY GT 125i FAQ

answers computed from the data above · terms in the glossary

Is the ROYAL ALLOY GT 125i reliable?

The ROYAL ALLOY GT 125i is more reliable than average for its class: 84.4% of its 3,325 MOT tests (2005–2025) passed first time, against a class average of 73.4%. That ranks it #2639 of 5426 models.

What does a GT 125i fail its MOT on most?

lamps and reflectors — 30% of all defects recorded against failed GT 125i tests.

What is the best year of GT 125i to buy used?

By first-time pass rate, 2021-registered examples do best (87.5%) and 2018 worst (82.1%). Condition and history still trump the year.