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MOT History from tests of petrol TRIUMPH UNKNOWNs year 1981

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

mot history
Pass percent:87.91%
(The average a petrol TRIUMPH UNKNOWN year 1981 passes without issue)
Based on:91 MOT Tests
Most common failuresNo# failures
Headlamp aim out of alignment2
Nearside Front Steering operation restricted in free movement from lock to lock (2.1.4 (c))1
Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b|1
Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d|1
Brake pedal has inadequate reserve travel |3.1.3b|1
Nearside Direction indicators not working |1.5.1c|1
Headlamp at least one does not illuminate on main beam |1.2.2a|ii||1
Rear Stop lamp remains on when the brake is released |1.3.1e|1
Rear Roller brake test indicates a binding brake |3.3.A1a|1
Front Roller brake test indicates a binding brake |3.3.A1a|1
Rear Brake master cylinder leaking |1.1.10 |b| |ii||1
Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii||1
Rear Brake component inadequately mounted brake pipe rubbing on exhaust |1.1.21 |c||1
Rear Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i||1
Headlamp insecure (4.1.1 (c))1
Central Front Handlebar retaining device loose Handle bar bushes worn (2.2.1 (b) (i))1
Rear reflector missing (4.8.2 (a) (ii))1
Headlamp not working on dipped beam (4.1.1 (a) (ii))1
Nearside Rear Direction indicator not working (4.4.1 (a) (ii))1
Registration plate issues1
Rear reflector missing |4.8.2 |a| |ii||1
Front Brake grabbing severely (1.2.1 (c))1
Offside Rear Direction indicator not working |1.5.1c|1
Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c|1
Nearside Fuel system component leaking fuel tap |7.2.1a|1
Headlamp aim projected beam image obviously incorrect (4.1.2 (c))1
Front Position lamp adversely affected by the operation of another lamp When both brake controls are operated (4.2.3 (b))1
Rear Position lamp not working (4.2.1 (a))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.

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