BIKERELIABILITY Reg check
Model report · 2005–2025

GILERA H@K

50cc Petrol Class 1
57.3%
first-time pass rate
30.6%
failed outright
7,180
median miles at test
447
MOT tests, 2005–2025
-16.8pp
vs expected · age & mileage

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.

“vs expected” adjusts for age, mileage and test class, so a cherished classic and a hard-used commuter are compared fairly. How this works.

Pass rate over time

first-time pass rate by test year · 2006–2012

The H@K's first-time pass rate has risen 10.1 points since 2006, 59.1% to 69.2%.

38%57%75%2006: 59.1% pass (66 tests)2007: 55.3% pass (47 tests)2008: 56.3% pass (48 tests)2009: 44.2% pass (43 tests)2010: 50.0% pass (38 tests)2011: 52.5% pass (40 tests)2012: 69.2% pass (39 tests)20062012

What fails on a H@K

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
223 40
steering and suspension
110 19.7
brakes
77 13.8
tyres and wheels
42 7.5
drive system
34 6.1
fuel and exhaust
23 4.1
body and structure
20 3.6
lamps and reflectors
10 1.8
reg plates and vin
10 1.8
driving controls
8 1.4

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 H@K beats 0 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

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 H@K.

Compare with any bike

rival not listed above? pick any model to see it head-to-head with the H@K

Pass rate by registration year

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

Best year to buy used: 2000 (59.1% pass). Weakest: 2001 (53.9%).

53%57%60%2000: 59.1% pass (230 tests)2001: 53.9% pass (152 tests)20002001

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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Free to embed on your site, blog or forum — a live Gilera H@K reliability card that stays up to date and links back here. More on the free API page.