MOT History from tests of petrol BSA B40s year 1968

Review the list of common BSA B40 failures below or to perform a specific mot history check on your BSA then use our popular KnowYourCar service

mot history

Pass percent:84.24%

(The average a petrol BSA B40 year 1968 passes without issue)

Based on:184 MOT Tests

Most common failures	No# failures
Headlamp aim out of alignment	5
Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	4
Nearside Handlebar handgrip not secure to handlebars. \|2.1.1c\|	4
Rear reflector on motorcycle missing \|1.4.1\|	3
Front wheel bearings have excessive free play \|2.3.5b\|	2
Rear Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	2
Centre Rear Rear reflector on motorcycle missing \|1.4.1\|	1
Front Roller brake test indicates a binding brake \|3.3.A1a\|	1
Brake performance not tested \|3.3\|	1
Throttle operating incorrectly \|6.2.1f\|	1
Plate brake test No brake control achieves an efficiency of 30%. \|3.3.B2a\|	1
Plate brake test Neither brake control achieves an efficiency of 25% \|3.3.B2b\|	1
Front Headlamp aim beam image kick-up is to the offside \|1.6.1\|	1
Locking device\|s\| not correctly fitted which may make the motor bicycle dangerous to ride \|6.2.1h\|	1
Wheel alignment incorrect which adversely affects the handling \|2.5.1\|	1
Wheel alignment incorrect which adversely affects the steering \|2.5.1\|	1
Front Roller brake test indicates a severely juddering brake \|3.3.A1b\|	1
Offside Front Brake lever has inadequate reserve travel \|3.1.3b\|	1
Rear Roller brake test indicates a binding brake \|3.3.A1a\|	1
Steering movement excessively stiff with the wheel raised \|2.2.1b\|	1
Fuel system component leaking \|7.2.1a\|	1
Rear Exhaust mounting does not fully support the exhaust system \|7.1.1.c\|	1
Front Steering headbearing has excessive free play \|2.2.2\|	1
Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking \|6.1.1c\|	1
Rear Rear position lamp does not illuminate immediately when it is switched on \|1.1.3a\|	1
Headlamp insecure \|1.2.3b\|	1
Headlamp missing \|1.2.3a\|	1
Steering headbearing has excessive free play \|2.2.2\|	1
Offside Handlebar handgrip not secure to handlebars. \|2.1.1c\|	1
Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	1
Front Front position lamp does not illuminate immediately when switched on \|1.1.3a\|	1
Rear position lamp does not illuminate immediately when it is switched on \|1.1.3a\|	1
Front Floor brake test indicates a binding brake \|3.3.C2c\|	1
Headlamp at least one does not illuminate on main beam \|1.2.2a\|ii\|\|	1

We get to these numbers by trawling through over 1 billion MOT test results since 2004 and crunched the numbers. We remove anything to do with Tyres, as they are model independent and group together common non-model specific issues. We are trying to get to a picture of what models have what issues.

Please note: We take the data from the DVSA. This data is raw and can contain typos and spelling mistakes that garages may have entered while recording a MOT result. Specifically miss-match on names of models and makes. We are constantly cleaning the data so bear with the odd issue.

Got suggestions? We’re improving this section all the time. If you have any suggestions, please let us know.

Most common failures	No# failures
Headlamp aim out of alignment	5
Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	4
Nearside Handlebar handgrip not secure to handlebars. \|2.1.1c\|	4
Rear reflector on motorcycle missing \|1.4.1\|	3
Front wheel bearings have excessive free play \|2.3.5b\|	2
Rear Stop lamp does not illuminate immediately a brake applies \|1.3.1a\|	2
Centre Rear Rear reflector on motorcycle missing \|1.4.1\|	1
Front Roller brake test indicates a binding brake \|3.3.A1a\|	1
Brake performance not tested \|3.3\|	1
Throttle operating incorrectly \|6.2.1f\|	1
Plate brake test No brake control achieves an efficiency of 30%. \|3.3.B2a\|	1
Plate brake test Neither brake control achieves an efficiency of 25% \|3.3.B2b\|	1
Front Headlamp aim beam image kick-up is to the offside \|1.6.1\|	1
Locking device\|s\| not correctly fitted which may make the motor bicycle dangerous to ride \|6.2.1h\|	1
Wheel alignment incorrect which adversely affects the handling \|2.5.1\|	1
Wheel alignment incorrect which adversely affects the steering \|2.5.1\|	1
Front Roller brake test indicates a severely juddering brake \|3.3.A1b\|	1
Offside Front Brake lever has inadequate reserve travel \|3.1.3b\|	1
Rear Roller brake test indicates a binding brake \|3.3.A1a\|	1
Steering movement excessively stiff with the wheel raised \|2.2.1b\|	1
Fuel system component leaking \|7.2.1a\|	1
Rear Exhaust mounting does not fully support the exhaust system \|7.1.1.c\|	1
Front Steering headbearing has excessive free play \|2.2.2\|	1
Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking \|6.1.1c\|	1
Rear Rear position lamp does not illuminate immediately when it is switched on \|1.1.3a\|	1
Headlamp insecure \|1.2.3b\|	1
Headlamp missing \|1.2.3a\|	1
Steering headbearing has excessive free play \|2.2.2\|	1
Offside Handlebar handgrip not secure to handlebars. \|2.1.1c\|	1
Headlamp at least one does not illuminate on dipped beam \|1.2.2a\|i\|\|	1
Front Front position lamp does not illuminate immediately when switched on \|1.1.3a\|	1
Rear position lamp does not illuminate immediately when it is switched on \|1.1.3a\|	1
Front Floor brake test indicates a binding brake \|3.3.C2c\|	1
Headlamp at least one does not illuminate on main beam \|1.2.2a\|ii\|\|	1

MOT History from tests of petrol BSA B40s year 1968

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