HONDA CBR 600 RR-4 vs YAMAHA YZF-R6

The HONDA CBR 600 RR-4 passes its MOT first time more often than the YAMAHA YZF-R6 — 81.4% vs 79.0%, a 2.4-point lead.

MOT reliability, side by side

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

Metric	HONDA CBR 600 RR-4	YAMAHA YZF-R6
First-time pass rate	81.4%	79.0%
Outright fail rate	10.7%	12.4%
Median miles at test	13,298	17,024
MOT tests analysed	5,335	155,295
Most common failure	lighting and signalling	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.

HONDA CBR 600 RR-4 81.4% pass · 5,335 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.