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MOT History from tests of petrol TRIUMPH 25s year 1973

Review the list of common TRIUMPH 25 failures below or to perform a specific mot history check on your TRIUMPH then use our popular KnowYourCar service

mot history
Pass percent:80.59%
(The average a petrol TRIUMPH 25 year 1973 passes without issue)
Based on:170 MOT Tests
Most common failuresNo# failures
Parking brake: efficiency below requirements |3.7.B.7|11
Brakes imbalanced across an axle8
Nearside Stop lamp not working |1.2.1b|4
Offside Stop lamp not working |1.2.1b|3
Rear Mechanical brake component has restricted free movement3
Headlamp aim out of alignment3
Rear brake binding2
Rear parking brake recording little or no effort2
Nearside Rear Suspension spring mounting prescribed area is excessively corroded inner wing area |2.4.A.3|1
Nearside Front Suspension component mounting prescribed area is excessively corroded at inner wing area |2.4.A.3|1
Fuel pipe insecure at gearbox |7.2.1|1
Nearside Headlamp not working on main beam |1.7.5a|1
Offside Steering rack gaiter insecure |2.2.D.2d|1
Front Front position lamp|s| not working |1.1.A.3b|1
Parking brake lever has excessive side play in the pivot and may disengage |3.1.4a|1
Upper Steering column universal joint insecure |2.1.5|1
Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3|1
Nearside Front Seat belt locking mechanism does not secure or release |5.2.5a|1
Offside Rear Stop lamp not working |1.2.1b|1
Nearside Front Seat belt retracting mechanism defective |5.2.5b|1
Offside Front Seat belt retracting mechanism defective |5.2.5b|1
Nearside Rear Fuel hose leaking |7.2.3|1
Nearside Rear Sub-frame has excessive play in a pin/bush |2.4.G.2|1
Offside Rear Sub-frame has excessive play in a pin/bush |2.4.G.2|1
Rear Exhaust system not adequately supported |7.1.1|1
Direction indicators flashing less than 60 times a minute |1.4.A.2g|1
Offside Front Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2|1
Offside Rear rear brake recording little or no effort |3.7.B.5a|1
Steering system has excessive free play detected at the steering wheel |steering rack fitted| |2.2.A.1b|1
Offside rear brake recording little or no effort |3.7.B.5a|1
Offside Rear Stop lamp adversely affected by the operation of another lamp |1.2.1f|1
Offside Subframe mounting prescribed area is excessively corroded |2.4.A.3|1
Nearside Subframe mounting prescribed area is excessively corroded |2.4.A.3|1
Nearside Seat belt anchorage prescribed area is excessively corroded |5.2.6|1
Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6|1
Offside Rear Sub-frame corroded and seriously weakened |2.4.G.1|1
Offside Front Steering rack gaiter insecure |2.2.D.2d|1
Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|1
Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3|1
Offside Front Brake master cylinder/servo mounting prescribed area is excessively corroded inner wing area |3.6.C.3|1
Nearside Front Seat belt insecurely fixed to the vehicles structure |5.2.1a|1
Nearside Front Headlamp not working on main beam |1.7.5a|1
Nearside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3|1
Nearside Front Sub-frame attachment bracket/mounting corroded and its strength is seriously reduced |2.4.G.1|1
Offside Front Front wheel bearing has excessive play |2.5.A.3c|1
Offside Front Front wheel bearing rough when rotated |2.5.A.2|1
Brake performance not tested |3.7.A.1|1
Service brake: efficiency below requirements |3.7.B.7|1
Hazard warning tell tale not working correctly |1.4.B.1e|1
Offside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d|1
Nearside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a|1
Direction indicators not working |1.4.A.2c|1
Nearside Steering rack gaiter split |2.2.D.2d|1
Nearside Front Body has a sharp edge caused by corrosion |6.1.C.1|1
Nearside Rear Brake relay lever has restricted free movement |3.5.1k|1
Parking brake lever, pawl mechanism pivot|s| or their associated mountings locking device insecure |3.1.4b|1
Nearside Rear Brake lever has restricted free movement |3.5.1k|1
Brake hose excessively deteriorated1
Parking brake mechanism/associated mounting prescribed area is fractured |3.1.9|1
Windscreen wiper does not clear the windscreen effectively1
Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))1
Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c))1
Parking brake efficiency below requirements (1.4.2 (a) (i))1
Registration plate lamp issues1
Rear brake application uneven1
Offside Inner Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3|1
Stop lamp not working |1.2.1b|1
Nearside Front Seat belt insecurely fixed to the vehicles structure reel |5.2.1a|1
Offside Front Seat belt insecurely fixed to the vehicles structure reel |5.2.1a|1
Nearside Rear Suspension spring mounting prescribed area is excessively corroded inner wheelarch |2.4.A.3|1
Offside Front brake caliper has restricted free movement |3.5.1k|1
Nearside front brake binding |3.7.B.1|1
Offside Front suspension has excessive play in a lower suspension ball joint track control arm |2.5.B.1a|1
Rear Sub-frame attachment rubber mounting deteriorated resulting in excessive movement front mounting bushes |2.4.G.2|1
Horn not working |1.6.2a|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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