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MOT History from tests of petrol TRIUMPH UNKNOWNs year 1977

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:88.35%
(The average a petrol TRIUMPH UNKNOWN year 1977 passes without issue)
Based on:103 MOT Tests
Most common failuresNo# failures
Registration plate issues1
Exhaust emissions carbon monoxide content excessive |7.3.B.1a|1
Exhaust emissions hydrocarbon content excessive |7.3.B.1b|1
Front Headlamp not working on main beam |4.1.1 |a| |ii||1
Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii||1
Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i||1
Nearside Handlebar handgrip not secure to handlebars. |2.1.1c|1
Front Handlebar mounting clamp loose |2.1.1a|1
Fuel system component insecure |7.2.1b|1
Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii||1
Stop lamp does not illuminate immediately a brake applies front switch faulty |1.3.1a|1
Front Brake lever pivots excessively worn |3.1.3a|1
Headlamp aim out of alignment1
Headlamp at least one does not illuminate on dipped beam |1.2.2a|i||1
Rear Brake caliper|s| insecure |3.2.A1j|1
Horn not loud enough to be heard by another road user |1.7.3a|1
Stop lamp remains on when the brake is released |1.3.1e|1
Handlebar mounting so insecure that steering is adversely affected (2.2.1 (a) (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.

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