Honda CB400SS vs Honda CB400

The Honda CB400SS passes its MOT first time more often than the Honda CB400: 85.6% vs 80.9%, a 4.7-point lead.

MOT reliability, side by side

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

Metric	Honda CB400SS	Honda CB400
First-time pass rate	85.6%	80.9%
Outright fail rate	6.7%	11.0%
Median miles at test	17,239	30,796
MOT tests analysed	568	9,072
Most common failure	lamps and reflectors	steering and suspension

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 CB400SS 85.6% pass · 568 tests HONDA CB400 80.9% pass · 9,072 tests

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