MOT reliability
Triumph T20b
13 vehicles · 39 completed MOT tests analysed
92%
MOT pass rate
Based on 13 Triumph T20b vehicles and 39 completed MOT tests, the Triumph T20b has an overall 92% pass rate, with an average recorded mileage of 17,884 miles.
13
Vehicles
39
MOT tests
440
Avg miles / year
0.3
Faults per test
0%
Dangerous-fault share
Triumph T20b problem areas
Where faults occur most across all Triumph T20b MOT tests:
-
Other73%
-
Steering45%
-
Brakes9%
Triumph T20b pass rate by age
| Age (years) | Tests | Pass rate |
|---|---|---|
| 1 | 1 | 0% |
| 6 | 1 | 100% |
| 7 | 1 | 100% |
| 8 | 1 | 100% |
| 9 | 1 | 100% |
Fuel types: Petrol (13)
Most common Triumph T20b MOT faults
These are the faults and advisories recorded most often across Triumph T20b MOT tests:
- Front Tyre not fitted in accordance with side wall instruction/s (4.1.2e) (1 times)
- Front Wheel corroded significantly reducing the original strength (4.2.1a) (1 times)
- Front Wheel spoke excessively loose (4.2.1b) (1 times)
- Front position lamp does not illuminate immediately when switched on (1.1.3a) (1 times)
- Nearside Front shock absorber seal failed and leaking oil (2.3.3) (1 times)
- Offside Front shock absorber seal failed and leaking oil (2.3.3) (1 times)
- Rear Tyre not fitted in accordance with side wall instruction/s (4.1.2e) (1 times)
- Roller brake test The less effective brake control does not achieve an efficiency of 25%. (3.3.A2b) (1 times)
- Wheel alignment incorrect which adversely affects the handling (2.5.1) (1 times)
- Steering headbearing has excessive free play (2.2.2) (1 times)
- Steering headbearing has slight free play (2.2.2) (1 times)
- Steering movement slightly 'notchy' (2.2.1a) (1 times)
- Headlamp aim too high (1.6) (1 times)
- Rear wheel spindle securing nut(s) loose (2.4.A.2b) (1 times)
Triumph T20b pass rate by registration year
| Year | Vehicles | Tests | Pass rate | Avg mileage |
|---|---|---|---|---|
| 2010 | 1 | 1 | 0% | 19,978 |
| 2000 | 1 | 4 | 100% | 3,203 |
| 1991 | 1 | 1 | 100% | — |
| 1980 | 1 | 4 | 75% | 32,473 |
| 1968 | 5 | 8 | 88% | 21,800 |
| 1967 | 4 | 21 | 100% | 13,469 |
Triumph T20b reliability FAQ
Across 13 Triumph T20b vehicles in our MOT data,
92% pass the MOT (a 8% failure rate), with about
0.3 faults or advisories recorded per test.
The most frequently recorded Triumph T20b MOT issues are:
Front Tyre not fitted in accordance with side wall instruction/s (4.1.2e); Front Wheel corroded significantly reducing the original strength (4.2.1a); Front Wheel spoke excessively loose (4.2.1b).
The typical Triumph T20b in our data has covered around
17,884 miles.
Compare the Triumph T20b
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