Honda CB77 vs Honda CB400N

The Honda CB77 passes its MOT first time more often than the Honda CB400N: 91.7% vs 77.5%, a 14.2-point lead.

MOT reliability, side by side

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

Metric	Honda CB77	Honda CB400N
First-time pass rate	91.7%	77.5%
Outright fail rate	2.6%	12.7%
Engine size	305cc	395cc
Rank among all models	#524 of 5428	#3977 of 5428
Median miles at test	16,170	30,448
MOT tests analysed	492	5,366
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.

Pass rate by test year

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

Test year	Honda CB77	Honda CB400N
2010	100.0%	71.9%
2011	94.1%	75.8%
2012	85.4%	74.7%
2013	91.3%	76.8%
2014	87.5%	78.3%
2015	95.8%	78.1%
2016	84.6%	78.6%
2017	93.9%	85.2%

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 CB77	Honda CB400N
0k-10k miles	90.1%	78.4%
10k-20k miles	91.5%	81.1%
20k-30k miles	93.4%	79.2%
30k-40k miles	92.2%	75.8%

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

HONDA CB77 91.7% pass · 492 tests HONDA CB400N 77.5% pass · 5,366 tests

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