BIKERELIABILITY Reg check
Model report · 2005–2025
90.3%
first-time pass rate
4.0%
failed outright
9,465
median miles at test
372
MOT tests, 2005–2025

The pass rate is the MOT first-time pass: a roadworthiness check of the items an MOT covers (brakes, lights, tyres, steering, structure, emissions), not a full mechanical inspection of engine or gearbox internals. It is a reliability signal, not a complete measure of mechanical reliability. What this measures.

Pass rate over time

first-time pass rate by test year · 2011–2015

The GS160's first-time pass rate has risen 3.2 points since 2011, 87.1% to 90.3%.

83%87%92%2011: 87.1% pass (31 tests)2012: 84.4% pass (32 tests)2013: 89.2% pass (37 tests)2014: 85.3% pass (34 tests)2015: 90.3% pass (31 tests)20112015

Pass rate by mileage

how the GS160's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage GS160 passes first time 90.9% of the time; by 40k that's 93.5%.

82%89%97%0k: 90.9% pass (186 tests)10k: 94.4% pass (36 tests)20k: 91.7% pass (36 tests)30k: 83.9% pass (31 tests)40k: 93.5% pass (31 tests)0k20k40k

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 GS160

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
18 50
brakes
8 22.2
steering and suspension
5 13.9
tyres and wheels
3 8.3
driving controls
1 2.8
steering
1 2.8

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 GS160 beats 4 of its 4 closest rivals (PIAGGIO VESPA, HONDA PCX 125, YAMAHA NMAX 125).

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 GS160.

Compare with any bike

rival not listed above? pick any model to see it head-to-head with the GS160

Pass rate by registration year

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

Best year to buy used: 1963 (94.5% pass). Weakest: 1964 (89.5%).

89%92%96%1962: 91.7% pass (120 tests)1963: 94.5% pass (109 tests)1964: 89.5% pass (105 tests)196219631964

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.

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