BSA C11G

250cc Petrol Class 2

#1111 of 5426 overall #50 of 62 BSAs #678 of 2787 other bikes

89.5%

first-time pass rate

4.6%

failed outright

8,720

median miles at test

304

MOT tests, 2005–2025

Pass rate over time

first-time pass rate by test year · 2006–2012

The C11G's first-time pass rate has fallen 10.1 points since 2006, 94.9% to 84.8%.

What fails on a C11G

failure defects by component group · advisories excluded

Component group	Defects	% of defects
steering and suspension	10	25.6
lighting and signalling	7	17.9
brakes	6	15.4
tyres and wheels	5	12.8
drive system	5	12.8
fuel and exhaust	3	7.7
body and structure	2	5.1
reg plates and vin	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 C11G beats 4 of its 4 closest rivals (YAMAHA YP250, YAMAHA WR250F, HONDA XR250).

YAMAHA YP250 82.5% pass · 12.4k tests YAMAHA WR250F 78.0% pass · 10.5k tests HONDA XR250 78.8% pass · 9,277 tests HONDA CBF250 84.9% pass · 7,536 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 C11G.

Pass rate by registration year

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

Best year to buy used: 1955 (92.7% pass). Weakest: 1954 (89.4%).

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.