Yamaha XSR 900 Abarth (mtm 850) vs Aprilia Tuono

The Yamaha XSR 900 Abarth (mtm 850) passes its MOT first time more often than the Aprilia Tuono: 93.2% vs 88.4%, a 4.8-point lead.

MOT reliability, side by side

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

Metric	Yamaha XSR 900 Abarth (mtm 850)	Aprilia Tuono
First-time pass rate	93.2%	88.4%
Outright fail rate	1.6%	5.5%
Vs comparable bikes (age & mileage adjusted)	+3.0 pts	+2.3 pts
Engine size	847cc	998cc
Rank among all models	#264 of 5428	#1478 of 5428
Median miles at test	3,942	11,489
MOT tests analysed	370	34,724
Most common failure	Identification of the vehicle	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.

Pass rate by test year

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

Test year	Yamaha XSR 900 Abarth (mtm 850)	Aprilia Tuono
2020	97.2%	90.5%
2021	92.3%	90.2%
2022	93.4%	89.9%
2023	88.9%	90.4%
2024	96.2%	91.3%
2025	92.7%	90.3%

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

YAMAHA XSR 900 ABARTH (MTM 850) 93.2% pass · 370 tests APRILIA TUONO 88.4% pass · 34.7k tests

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