BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ SUZUKI/GZ 125 L1
Model report · 2005–2025

SUZUKI GZ 125 L1

124cc Petrol Class 1
#4258 of 5426 overall #592 of 680 SUZUKIs #220 of 734 commuter bikes
75.4%
first-time pass rate
15.0%
failed outright
7,553
median miles at test
406
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2014–2022

The GZ 125 L1's first-time pass rate has fallen 5.9 points since 2014, 83.3% to 77.4%.

64%75%87%2014: 83.3% pass (36 tests)2015: 82.2% pass (45 tests)2016: 76.9% pass (52 tests)2017: 72.9% pass (48 tests)2018: 78.8% pass (33 tests)2021: 67.6% pass (37 tests)2022: 77.4% pass (31 tests)20142022

What fails on a GZ 125 L1

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
brakes
38 29
lamps and reflectors
30 22.9
lighting and signalling
16 12.2
structure and attachments
15 11.5
steering
7 5.3
tyres
6 4.6
suspension
6 4.6
steering and suspension
5 3.8
audible warning (Horn)
4 3.1
drive system
4 3.1

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 GZ 125 L1 beats 4 of its 4 closest rivals (YAMAHA YBR 125, HONDA CG125, HONDA CBF125).

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 GZ 125 L1.

Pass rate by registration year

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

Best year to buy used: 2011 (79.0% pass). Weakest: 2012 (60.3%).

57%70%83%2011: 79.0% pass (328 tests)2012: 60.3% pass (78 tests)20112012

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.