Bsa D1 vs Honda CBF125

The Bsa D1 passes its MOT first time more often than the Honda CBF125: 87.5% vs 73.3%, a 14.2-point lead.

MOT reliability, side by side

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

Metric	Bsa D1	Honda CBF125
First-time pass rate	87.5%	73.3%
Outright fail rate	5.4%	16.5%
Engine size	125cc	125cc
Rank among all models	#1750 of 5428	#4471 of 5428
Median miles at test	11,600	10,974
MOT tests analysed	391	84,425
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.

Pass rate by mileage

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

Mileage	Bsa D1	Honda CBF125
0k-10k miles	92.3%	80.3%
10k-20k miles	90.5%	68.7%
20k-30k miles	76.8%	65.5%
30k-40k miles	84.8%	63.9%

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

BSA D1 87.5% pass · 391 tests HONDA CBF125 73.3% pass · 84.4k tests

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