BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ SUZUKI/GZ 125 K7
Model report · 2005–2025

SUZUKI GZ 125 K7

124cc Petrol Class 1
#4972 of 5426 overall #667 of 680 SUZUKIs #501 of 734 commuter bikes
65.9%
first-time pass rate
23.5%
failed outright
10,544
median miles at test
434
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2011–2017

The GZ 125 K7's first-time pass rate has risen 1.4 points since 2011, 74.3% to 75.7%.

39%61%83%2011: 74.3% pass (35 tests)2012: 68.9% pass (45 tests)2013: 46.5% pass (43 tests)2014: 70.0% pass (40 tests)2015: 71.8% pass (39 tests)2016: 68.6% pass (35 tests)2017: 75.7% pass (37 tests)20112017

Pass rate by mileage

how the GZ 125 K7's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage GZ 125 K7 passes first time 72.2% of the time; by 20k that's 59.7%.

57%66%75%0k: 72.2% pass (212 tests)10k: 60.6% pass (132 tests)20k: 59.7% pass (62 tests)0k10k20k

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 GZ 125 K7

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
brakes
82 29.5
lighting and signalling
56 20.1
drive system
36 12.9
steering and suspension
34 12.2
lamps and reflectors
24 8.6
tyres and wheels
18 6.5
structure and attachments
12 4.3
fuel and exhaust
6 2.2
suspension
5 1.8
tyres
5 1.8

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 K7 beats 0 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 K7.

Pass rate by registration year

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

Best year to buy used: 2007 (67.2% pass). Weakest: 2008 (65.4%).

65%66%68%2007: 67.2% pass (290 tests)2008: 65.4% pass (136 tests)20072008

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.