BSA D10

175cc Petrol Class 1

#545 of 5426 overall #27 of 62 BSAs #330 of 2787 other bikes

91.6%

first-time pass rate

3.7%

failed outright

14,040

median miles at test

323

MOT tests, 2005–2025

Pass rate by mileage

how the D10's first-time pass rate falls with the odometer · class average 73.4%

A low-mileage D10 passes first time 86.9% of the time; by 20k that's 94.9%.

First-time pass rate by odometer reading at test, 10,000-mile bands for this model. Mileage is the strongest reliability signal. See the full curve.

What fails on a D10

failure defects by component group · advisories excluded

Component group	Defects	% of defects
lighting and signalling	16	42.1
steering and suspension	9	23.7
tyres and wheels	5	13.2
reg plates and vin	3	7.9
brakes	2	5.3
body and structure	2	5.3
fuel and exhaust	1	2.6

Defects recorded against failed normal tests, 2005–2025, grouped by DVSA inspection section. One test can record multiple defects.

How rivals compare

same type, similar capacity, high test volume

On first-time pass rate the D10 beats 1 of its 1 closest rivals (BSA BANTAM).

BSA BANTAM 88.7% pass · 7,201 tests

Rivals share this bike's type and sit within ±30% of its engine capacity, ≥ 5,000 tests. Card colour = better/worse first-time pass rate than the D10.

Pass rate by registration year

how each model-year cohort fares · registration year from first use date

Best year to buy used: 1966 (94.7% pass). Weakest: 1967 (89.6%).

First-time pass rate by the year each bike was first registered (cohorts with ≥ 50 tests). Older cohorts are survivors: the worst examples have already left the road, which tends to lift the earliest years.