Suzuki Gsxr 750 L7 vs Yamaha YZF-R6

The Suzuki Gsxr 750 L7 passes its MOT first time more often than the Yamaha YZF-R6: 92.3% vs 79.0%, a 13.3-point lead.

MOT reliability, side by side

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

Metric	Suzuki Gsxr 750 L7	Yamaha YZF-R6
First-time pass rate	92.3%	79.0%
Outright fail rate	3.6%	12.4%
Vs comparable bikes (age & mileage adjusted)	+3.0 pts	-5.5 pts
Engine size	750cc	599cc
Rank among all models	#415 of 5428	#3771 of 5428
Median miles at test	6,626	17,023
MOT tests analysed	663	155,350
Most common failure	lamps and reflectors	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	Suzuki Gsxr 750 L7	Yamaha YZF-R6
Lights & signalling	1.7%	6.0%
Brakes	0.8%	4.2%
Steering & suspension	0.8%	3.5%
Tyres & wheels	0.6%	3.1%
Structure & body	0.5%	0.9%
Fuel & exhaust	0%	1.0%
Drive system	0%	0.9%

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	Suzuki Gsxr 750 L7	Yamaha YZF-R6
2020	95.6%	82.1%
2021	90.8%	80.7%
2022	87.0%	81.9%
2023	91.6%	82.7%
2024	93.0%	82.7%
2025	95.1%	83.3%

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	Suzuki Gsxr 750 L7	Yamaha YZF-R6
0k-10k miles	91.5%	84.3%
10k-20k miles	91.1%	79.9%

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

Suzuki Gsxr 750 L7 vs Yamaha YZF-R6 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Suzuki Gsxr 750 L7 or the Yamaha YZF-R6?

The Suzuki Gsxr 750 L7 passes its MOT first time more often than the Yamaha YZF-R6: 92.3% vs 79.0%, a 13.3-point lead. Adjusted for age, mileage and test class, the Suzuki Gsxr 750 L7 still comes out ahead: +3.0 points vs comparable bikes for the Suzuki Gsxr 750 L7, -5.5 for the Yamaha YZF-R6. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Suzuki Gsxr 750 L7 fail its MOT on most?

Lights & signalling: 1.7% of Suzuki Gsxr 750 L7 MOT tests failed on it, then brakes (0.8%).

What does the Yamaha YZF-R6 fail its MOT on most?

Lights & signalling: 6.0% of Yamaha YZF-R6 MOT tests failed on it, then brakes (4.2%).

SUZUKI GSXR 750 L7 92.3% pass · 663 tests YAMAHA YZF-R6 79.0% pass · 155k tests

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