BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
Model report · 2005–2025

SUZUKI ZR50

49cc Petrol Class 1
68.1%
first-time pass rate
21.3%
failed outright
12,827
median miles at test
310
MOT tests, 2005–2025

Pass rate by mileage

how the ZR50's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage ZR50 passes first time 73.6% of the time; by 20k that's 54.4%.

51%64%77%0k: 73.6% pass (72 tests)10k: 70.6% pass (163 tests)20k: 54.4% pass (57 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 ZR50

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
107 39.3
steering and suspension
51 18.8
brakes
38 14
tyres and wheels
17 6.2
drive system
17 6.2
lamps and reflectors
14 5.1
body and structure
14 5.1
fuel and exhaust
7 2.6
driving controls
4 1.5
tyres
3 1.1

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 ZR50 beats 2 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 ZR50.

Pass rate by registration year

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

Best year to buy used: 1982 (73.3% pass). Weakest: 1982 (73.3%).

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.