DUCATI ST4

916cc Petrol Class 2

#2749 of 5426 overall #154 of 173 DUCATIs #1736 of 2787 other bikes

84.0%

first-time pass rate

9.5%

failed outright

18,179

median miles at test

4,934

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2005–2025

The ST4's first-time pass rate has fallen 3.3 points since 2005, 89.7% to 86.4%.

Pass rate by mileage

how the ST4's first-time pass rate falls with the odometer · class average 84.9%

A low-mileage ST4 passes first time 88.6% of the time; by 50k that's 83.6%.

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 ST4

failure defects by component group · advisories excluded

Component group	Defects	% of defects	vs all bikes
lighting and signalling	257	30.2	1.0×
steering and suspension	180	21.1	1.0×
brakes	152	17.8	0.6×
tyres and wheels	75	8.8	0.7×
lamps and reflectors	72	8.5	0.6×
drive system	45	5.3	1.0×
suspension	23	2.7	0.6×
reg plates and vin	19	2.2	0.5×
structure and attachments	16	1.9	0.4×
fuel and exhaust	13	1.5	0.3×

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 ST4 beats 1 of its 4 closest rivals (BMW R1200, BMW R1150, TRIUMPH SPRINT).

BMW R1200 92.9% pass · 299k tests BMW R1150 88.5% pass · 171k tests TRIUMPH SPRINT 85.6% pass · 133k tests SUZUKI GSF1200 82.4% pass · 97.6k tests

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 ST4.

Pass rate by registration year

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

Best year to buy used: 2000 (85.7% pass). Weakest: 1998 (81.4%).

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.

DUCATI ST4 FAQ

answers computed from the data above · terms in the glossary

Is the DUCATI ST4 reliable?

The DUCATI ST4 is about average for its class: 84.0% of its 4,934 MOT tests (2005–2025) passed first time, against a class average of 84.9%. That ranks it #2749 of 5426 models.

What does a ST4 fail its MOT on most?

lighting and signalling — 30% of all defects recorded against failed ST4 tests.

What is the best year of ST4 to buy used?

By first-time pass rate, 2000-registered examples do best (85.7%) and 1998 worst (81.4%). Condition and history still trump the year.

How many miles will a ST4 last?

The median ST4 shows 18,179 miles at test, and examples around 50k miles still pass 83.6% of the time — mileage alone rarely kills one.