Honda Bros 650 vs Yamaha FZS600

The Yamaha FZS600 passes its MOT first time more often than the Honda Bros 650: 82.6% vs 78.6%, a 4.0-point lead.

MOT reliability, side by side

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

Metric	Honda Bros 650	Yamaha FZS600
First-time pass rate	78.6%	82.6%
Outright fail rate	9.9%	10.6%
Vs comparable bikes (age & mileage adjusted)	-2.5 pts	-0.8 pts
Engine size	649cc	599cc
Rank among all models	#3832 of 5428	#3052 of 5428
Median miles at test	43,861	21,612
MOT tests analysed	243	136,558
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.

Pass rate by mileage

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

Mileage	Honda Bros 650	Yamaha FZS600
30k-40k miles	80.0%	78.7%
50k-60k miles	76.7%	74.7%

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

HONDA BROS 650 78.6% pass · 243 tests YAMAHA FZS600 82.6% pass · 137k tests

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