Aprilia Tuono 660 vs Triumph Street Triple R

The Aprilia Tuono 660 passes its MOT first time more often than the Triumph Street Triple R: 90.1% vs 87.7%, a 2.4-point lead.

MOT reliability, side by side

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

Metric	Aprilia Tuono 660	Triumph Street Triple R
First-time pass rate	90.1%	87.7%
Outright fail rate	4.7%	6.0%
Vs comparable bikes (age & mileage adjusted)	+0.7 pts	+1.1 pts
Engine size	659cc	675cc
Rank among all models	#921 of 5428	#1695 of 5428
Median miles at test	4,290	10,588
MOT tests analysed	274	20,614
Most common failure	lamps and reflectors	lamps and reflectors

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.

Pass rate by mileage

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

Mileage	Aprilia Tuono 660	Triumph Street Triple R
0k-10k miles	91.8%	91.0%
10k-20k miles	78.4%	86.5%

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

APRILIA TUONO 660 90.1% pass · 274 tests TRIUMPH STREET TRIPLE R 87.7% pass · 20.6k tests

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