BIKERELIABILITY Reg check
League table/ DERBI/GPR 50 10
Model report · 2005–2025

DERBI GPR 50 10

50cc Petrol Class 1
63.1%
first-time pass rate
30.4%
failed outright
7,786
median miles at test
168
MOT tests, 2005–2025
-8.8pp
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.

What fails on a GPR 50 10

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
brakes
37 21.8
steering and suspension
25 14.7
lighting and signalling
24 14.1
structure and attachments
17 10
body and structure
15 8.8
lamps and reflectors
14 8.2
drive system
13 7.6
suspension
12 7.1
tyres
7 4.1
steering
6 3.5

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 GPR 50 10 beats 0 of its 4 closest rivals (PEUGEOT SPEEDFIGHT, PIAGGIO ZIP, PIAGGIO NRG).

PEUGEOT SPEEDFIGHT 65.2% pass · 83.7k tests Compare head-to-head →
PIAGGIO ZIP 71.3% pass · 79.0k tests Compare head-to-head →
PIAGGIO NRG 65.5% pass · 40.5k tests Compare head-to-head →
PEUGEOT VIVACITY 70.4% pass · 29.7k tests Compare head-to-head →

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 GPR 50 10.

Compare with any bike

rival not listed above? pick any model to see it head-to-head with the GPR 50 10

More DERBI models

other DERBI bikes ranked by MOT pass rate
DERBI SENDA 55.0% pass · 9,050 tests
DERBI GPR50-R 53.4% pass · 1,901 tests
DERBI GPR 50 54.7% pass · 1,847 tests
DERBI ATLANTIS 73.4% pass · 1,505 tests
DERBI PREDATOR 66.3% pass · 1,298 tests
DERBI SENDA SM 51.1% pass · 1,013 tests

See all DERBI models →

Pass rate by registration year

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

Best year to buy used: 2011 (63.6% pass). Weakest: 2010 (62.5%).

62%63%64%2010: 62.5% pass (56 tests)2011: 63.6% pass (66 tests)20102011

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.

Embed this bike

Free to embed on your site, blog or forum — a live Derbi GPR 50 10 reliability card that stays up to date and links back here. More on the free API page.