Ducati Supersport S vs Triumph Daytona

The Ducati Supersport S passes its MOT first time more often than the Triumph Daytona: 90.5% vs 83.6%, a 6.9-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025

Metric	Ducati Supersport S	Triumph Daytona
First-time pass rate	90.5%	83.6%
Outright fail rate	4.6%	9.4%
Vs comparable bikes (age & mileage adjusted)	+1.6 pts	-1.2 pts
Engine size	937cc	955cc
Rank among all models	#800 of 5428	#2835 of 5428
Median miles at test	6,990	15,798
MOT tests analysed	2,430	113,145
Most common failure	brakes	lighting and signalling

First-time outcomes on normal tests, 2005–2025. "Most common failure" is the component group with the most recorded defects on failed tests. Read pass rates against test counts: a smaller sample is noisier. Source: DVSA anonymised MOT results.

"Vs comparable bikes" is the first-time pass rate minus the rate expected for each bike's own mix of age, mileage and test class, in percentage points: positive means better than comparable bikes. How this works.

What fails, side by side

share of each bike's MOT tests that failed on the component · lower is better

Component	Ducati Supersport S	Triumph Daytona
Brakes	3.0%	3.1%
Lights & signalling	1.1%	4.1%
Steering & suspension	0.1%	2.7%
Tyres & wheels	0.6%	2.0%
Structure & body	0.5%	0.7%
Fuel & exhaust	0%	0.6%
Drive system	0%	0.5%

A test that fails on two components counts once in each. Component links go to the bikes most likely to fail on it.

Pass rate by test year

first-time MOT pass rate in each calendar year both bikes were tested

Test year	Ducati Supersport S	Triumph Daytona
2020	94.1%	85.6%
2021	91.9%	84.6%
2022	88.9%	85.9%
2023	89.5%	84.9%
2024	90.8%	84.7%
2025	89.0%	85.9%

Each year mixes bikes of different ages, so a fleet that is getting older tends to slip.

Pass rate by mileage

first-time MOT pass rate by miles on the clock at test

Mileage	Ducati Supersport S	Triumph Daytona
0k-10k miles	90.8%	88.3%
10k-20k miles	88.1%	83.8%
20k-30k miles	85.9%	80.9%

Bands with fewer than 30 tests for either bike are left out.

Ducati Supersport S vs Triumph Daytona FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Ducati Supersport S or the Triumph Daytona?

The Ducati Supersport S passes its MOT first time more often than the Triumph Daytona: 90.5% vs 83.6%, a 6.9-point lead. Adjusted for age, mileage and test class, the Ducati Supersport S still comes out ahead: +1.6 points vs comparable bikes for the Ducati Supersport S, -1.2 for the Triumph Daytona. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Ducati Supersport S fail its MOT on most?

Brakes: 3.0% of Ducati Supersport S MOT tests failed on it, then lights & signalling (1.1%).

What does the Triumph Daytona fail its MOT on most?

Lights & signalling: 4.1% of Triumph Daytona MOT tests failed on it, then brakes (3.1%).

Which holds up better at high mileage, the Ducati Supersport S or the Triumph Daytona?

At 20k-30k miles the Ducati Supersport S passes first time more often: 85.9% for the Ducati Supersport S vs 80.9% for the Triumph Daytona.

DUCATI SUPERSPORT S 90.5% pass · 2,430 tests TRIUMPH DAYTONA 83.6% pass · 113k tests

See each bike's full report (trend, mileage curve, failure breakdown and rivals) on its own page.