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

MOTO GUZZI GRISO 8V

1151cc Petrol Class 2
90.5%
first-time pass rate
5.4%
failed outright
9,560
median miles at test
832
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2012–2025

The GRISO 8V's first-time pass rate has risen 4.4 points since 2012, 90.9% to 95.3%.

82%91%100%2012: 90.9% pass (33 tests)2013: 87.9% pass (58 tests)2014: 88.9% pass (72 tests)2015: 95.3% pass (85 tests)2016: 89.0% pass (82 tests)2017: 90.3% pass (72 tests)2018: 96.8% pass (62 tests)2019: 87.5% pass (56 tests)2020: 86.4% pass (44 tests)2021: 85.0% pass (60 tests)2022: 92.7% pass (55 tests)2023: 92.2% pass (51 tests)2024: 91.9% pass (37 tests)2025: 95.3% pass (43 tests)20122025

Pass rate by mileage

how the GRISO 8V's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage GRISO 8V passes first time 91.8% of the time; by 20k that's 88.3%.

88%90%93%0k: 91.8% pass (439 tests)10k: 91.3% pass (264 tests)20k: 88.3% pass (60 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 GRISO 8V

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects vs all bikes
lamps and reflectors
19 28.4 1.0×
brakes
9 13.4 0.3×
lighting and signalling
9 13.4 0.3×
steering and suspension
8 11.9 0.3×
tyres
7 10.4 1.2×
tyres and wheels
5 7.5 0.3×
suspension
4 6 0.7×
Identification of the vehicle
2 3 1.0×
driving controls
2 3 0.5×
structure and attachments
2 3 0.4×

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects. "vs all bikes" is how often this model's tests record a defect in the group, as a multiple of the all-bike rate.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the GRISO 8V beats 3 of its 4 closest rivals (BMW R1200, BMW R1150, TRIUMPH SPRINT).

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 GRISO 8V.

Pass rate by registration year

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

Best year to buy used: 2011 (93.8% pass). Weakest: 2008 (88.1%).

87%91%95%2008: 88.1% pass (176 tests)2009: 90.1% pass (181 tests)2010: 88.2% pass (186 tests)2011: 93.8% pass (160 tests)2012: 93.4% pass (122 tests)200820102012

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.

MOTO GUZZI GRISO 8V FAQ

answers computed from the data above · terms in the glossary

Is the MOTO GUZZI GRISO 8V reliable?

The MOTO GUZZI GRISO 8V is more reliable than average for its class: 90.5% of its 832 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #798 of 5426 models.

What does a GRISO 8V fail its MOT on most?

lamps and reflectors — 28% of all defects recorded against failed GRISO 8V tests.

What is the best year of GRISO 8V to buy used?

By first-time pass rate, 2011-registered examples do best (93.8%) and 2008 worst (88.1%). Condition and history still trump the year.

How many miles will a GRISO 8V last?

The median GRISO 8V shows 9,560 miles at test, and examples around 20k miles still pass 88.3% of the time — mileage alone rarely kills one.