BIKERELIABILITY Reg check
League table/ Honda CBR 500 Ra-K/vs Yamaha YZF-R6
Head-to-head · 2005–2025

Data as of: DVSA MOT results to 2025

Honda CBR 500 Ra-K vs Yamaha YZF-R6

The Honda CBR 500 Ra-K passes its MOT first time more often than the Yamaha YZF-R6: 90.8% vs 79.0%, a 11.8-point lead.

MOT reliability, side by side

first-time pass rate, outright fail rate and tests analysed · 2005–2025
Metric Honda CBR 500 Ra-K Yamaha YZF-R6
First-time pass rate 90.8% 79.0%
Outright fail rate 4.8% 12.4%
Vs comparable bikes (age & mileage adjusted) +2.4 pts -5.5 pts
Engine size 471cc 599cc
Rank among all models #727 of 5428 #3771 of 5428
Median miles at test 6,575 17,023
MOT tests analysed 1,098 155,350
Most common failure structure and attachments 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 Honda CBR 500 Ra-K Yamaha YZF-R6
Lights & signalling 1.1% 6.0%
Brakes 1.6% 4.2%
Steering & suspension 0.9% 3.5%
Tyres & wheels 1.3% 3.1%
Structure & body 1.6% 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 Honda CBR 500 Ra-K Yamaha YZF-R6
2022 92.1% 81.9%
2023 92.4% 82.7%
2024 89.2% 82.7%
2025 90.0% 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 Honda CBR 500 Ra-K Yamaha YZF-R6
0k-10k miles 93.4% 84.3%
10k-20k miles 85.3% 79.9%
20k-30k miles 83.3% 76.6%

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

Honda CBR 500 Ra-K vs Yamaha YZF-R6 FAQ

answers computed from the data above · terms in the glossary

Which is more reliable, the Honda CBR 500 Ra-K or the Yamaha YZF-R6?

The Honda CBR 500 Ra-K passes its MOT first time more often than the Yamaha YZF-R6: 90.8% vs 79.0%, a 11.8-point lead. Adjusted for age, mileage and test class, the Honda CBR 500 Ra-K still comes out ahead: +2.4 points vs comparable bikes for the Honda CBR 500 Ra-K, -5.5 for the Yamaha YZF-R6. An MOT checks roadworthiness items, not engine or gearbox internals.

What does the Honda CBR 500 Ra-K fail its MOT on most?

Brakes: 1.6% of Honda CBR 500 Ra-K MOT tests failed on it, then structure & body (1.6%).

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%).

Which holds up better at high mileage, the Honda CBR 500 Ra-K or the Yamaha YZF-R6?

At 20k-30k miles the Honda CBR 500 Ra-K passes first time more often: 83.3% for the Honda CBR 500 Ra-K vs 76.6% for the Yamaha YZF-R6.

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