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

MOTO GUZZI MONZA

493cc Petrol Class 2
89.6%
first-time pass rate
6.6%
failed outright
33,824
median miles at test
106
MOT tests, 2005–2025

What fails on a MONZA

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
lighting and signalling
5 29.4
brakes
4 23.5
steering and suspension
2 11.8
lamps and reflectors
1 5.9
suspension
1 5.9
Items Not Tested
1 5.9
tyres and wheels
1 5.9
body and structure
1 5.9
fuel and exhaust
1 5.9

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 MONZA beats 4 of its 4 closest rivals (KAWASAKI ZX-6R, SUZUKI GSF600, YAMAHA FZS600).

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 MONZA.

Pass rate by registration year

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

Best year to buy used: 1982 (92.6% pass). Weakest: 1982 (92.6%).

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.