BIKERELIABILITY
MOT DATA · GREAT BRITAIN · 2005–2025
League table/ DUCATI/M821 STEALTH
Model report · 2005–2025

DUCATI M821 STEALTH

821cc Petrol Class 2
85.8%
first-time pass rate
5.4%
failed outright
4,178
median miles at test
204
MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2023–2025

The M821 STEALTH's first-time pass rate has fallen 2.0 points since 2023, 86.4% to 84.4%.

83%85%87%2023: 86.4% pass (59 tests)2024: 84.7% pass (59 tests)2025: 84.4% pass (64 tests)20232025

What fails on a M821 STEALTH

failure defects by component group · advisories excluded
Component group Share of defects Defects % of defects
brakes
10 37
lamps and reflectors
10 37
Identification of the vehicle
2 7.4
structure and attachments
2 7.4
suspension
2 7.4
steering
1 3.7

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 M821 STEALTH 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 M821 STEALTH.

Pass rate by registration year

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

Best year to buy used: 2019 (87.5% pass). Weakest: 2020 (86.0%).

85%87%88%2019: 87.5% pass (96 tests)2020: 86.0% pass (93 tests)20192020

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.