MV Agusta Brutale S vs Triumph Street Triple

The MV Agusta Brutale S passes its MOT first time more often than the Triumph Street Triple: 89.2% vs 87.7%, a 1.5-point lead.

MOT reliability, side by side

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

Metric	MV Agusta Brutale S	Triumph Street Triple
First-time pass rate	89.2%	87.7%
Outright fail rate	5.9%	5.9%
Vs comparable bikes (age & mileage adjusted)	+2.0 pts	+1.3 pts
Engine size	749cc	675cc
Rank among all models	#1212 of 5428	#1695 of 5428
Median miles at test	6,746	11,189
MOT tests analysed	1,076	37,699
Most common failure	lighting and signalling	brakes

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	MV Agusta Brutale S	Triumph Street Triple
Lights & signalling	3.3%	2.6%
Steering & suspension	1.5%	1.2%
Tyres & wheels	1.3%	1.2%
Brakes	0.5%	1.6%
Structure & body	0.9%	0.7%
Drive system	0.2%	0.2%
Fuel & exhaust	0.1%	0.1%

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	MV Agusta Brutale S	Triumph Street Triple
2017	91.0%	88.3%
2018	86.2%	87.8%
2019	93.6%	87.9%
2020	76.9%	89.6%
2021	90.0%	87.2%
2022	86.7%	87.3%
2023	91.9%	87.5%
2025	91.2%	86.4%

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	MV Agusta Brutale S	Triumph Street Triple
0k-10k miles	91.9%	91.3%
10k-20k miles	85.4%	86.7%
20k-30k miles	89.7%	82.7%

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

MV Agusta Brutale S vs Triumph Street Triple FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the MV Agusta Brutale S or the Triumph Street Triple?

The MV Agusta Brutale S passes its MOT first time more often than the Triumph Street Triple: 89.2% vs 87.7%, a 1.5-point lead. Adjusted for age, mileage and test class the two are level (+2.0 vs +1.3 points against comparable bikes), so the raw gap is mostly down to how old and how used each fleet is. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the MV Agusta Brutale S fail its MOT on most?

Lights & signalling: 3.3% of MV Agusta Brutale S MOT tests failed on it, then steering & suspension (1.5%).

What does the Triumph Street Triple fail its MOT on most?

Lights & signalling: 2.6% of Triumph Street Triple MOT tests failed on it, then brakes (1.6%).

Which holds up better at high mileage, the MV Agusta Brutale S or the Triumph Street Triple?

At 20k-30k miles the MV Agusta Brutale S passes first time more often: 89.7% for the MV Agusta Brutale S vs 82.7% for the Triumph Street Triple.

MV AGUSTA BRUTALE S 89.2% pass · 1,076 tests TRIUMPH STREET TRIPLE 87.7% pass · 37.7k tests

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