Skip to content

MOT reliability

Triumph Tr3a

143 vehicles · 1,160 completed MOT tests analysed
89%
MOT pass rate

Based on 143 Triumph Tr3a vehicles and 1,160 completed MOT tests, the Triumph Tr3a has an overall 89% pass rate, with an average recorded mileage of 38,826 miles.

143
Vehicles
1,160
MOT tests
869
Avg miles / year
0.6
Faults per test
1%
Dangerous-fault share

Triumph Tr3a problem areas

Where faults occur most across all Triumph Tr3a MOT tests:

  • Other93%
  • Brakes7%
  • Tyres, wheels & suspension7%
  • Emissions & nuisance6%
  • Steering6%
  • Seatbelts & equipment4%
  • Visibility2%
  • Body & structure2%

Triumph Tr3a pass rate by age

How the Triumph Tr3a's MOT pass rate changes as it ages (buckets with 20+ tests).

Age (years)TestsPass rate
11090%
29100%
31292%
41593%
51486%
613100%
71788%
82190%
91587%
102190%
111788%
121894%
131889%
142286%
151894%
161984%
171889%
181889%
1911100%
201681%

Fuel types: Petrol (143)

Most common Triumph Tr3a MOT faults

These are the faults and advisories recorded most often across Triumph Tr3a MOT tests:

  1. Nearside Front wheel bearing has slight play (2.5.A.3c) (24 times)
  2. Steering system has slight free play detected at steering wheel (2.2.A.1a) (21 times)
  3. Oil leak (17 times)
  4. Windscreen washer provides insufficient washer liquid (8.2.3) (15 times)
  5. Offside Front wheel bearing has slight play (2.5.A.3c) (13 times)
  6. Offside Rear wheel bearing has slight play (2.6.2) (8 times)
  7. Nearside Front Front wheel bearing has slight play (2.5.A.3c) (8 times)
  8. Offside Rear Tyre worn close to the legal limit (4.1.E.1) (7 times)
  9. Offside Front Wheel bearing has slight play (5.1.3 (a) (i)) (7 times)
  10. Oil leak, but not excessive (8.4.1 (a) (i)) (6 times)
  11. Horn not working (1.6.2a) (5 times)
  12. Nearside Rear Tyre worn close to the legal limit (4.1.E.1) (5 times)
  13. Offside Stop lamp not working (1.2.1b) (5 times)
  14. Parking brake: efficiency below requirements (3.7.B.7) (5 times)
  15. Nearside Rear Shock absorber insecure (2.7.2b) (5 times)

Triumph Tr3a pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
2018 1 5 60% 7,689
2016 4 10 90% 63,861
2015 2 5 60% 32,585
2014 3 16 100% 32,859
2012 2 5 100% 857
2011 1 4 100% 67,572
2010 1 11 82% 9,646
2009 3 11 91% 43,803
2007 3 27 89% 34,316
2003 2 27 96% 31,948
2002 4 57 91% 19,539
2001 3 30 93% 59,438
2000 2 29 90% 54,861
1999 2 18 94% 33,984
1998 3 31 84% 42,378
1996 4 32 91% 41,903
1995 1 8 100% 75,667
1994 1 24 75% 97,315
1993 1 8 75% 3,191
1992 3 13 100% 46,538
1991 1 9 89% 60,105
1990 2 9 67% 25,753
1988 2 16 100% 54,010
1987 2 17 94% 34,820
1985 1 10 90% 20,661
1984 2 13 69% 16,776
1983 2 14 71% 35,036
1980 1 6 100% 17,826
1975 1 15 80% 24,027
1964 1 17 100% 22,715
1962 3 38 92% 67,844
1961 4 35 89% 55,817
1960 35 328 88% 30,735
1959 21 143 89% 36,986
1958 15 99 90% 38,357
1957 2 11 91% 127,415
1955 2 9 89% 53,905

Triumph Tr3a reliability FAQ

Across 143 Triumph Tr3a vehicles in our MOT data, 89% pass the MOT (a 11% failure rate), with about 0.6 faults or advisories recorded per test.

The most frequently recorded Triumph Tr3a MOT issues are: Nearside Front wheel bearing has slight play (2.5.A.3c); Steering system has slight free play detected at steering wheel (2.2.A.1a); Oil leak.

The typical Triumph Tr3a in our data has covered around 38,826 miles.

Compare the Triumph Tr3a

See how the Triumph Tr3a stacks up against other Triumph models on MOT reliability:

Tr3a vs Toledo Tr3a vs Unknown Tr3a vs 2000 Tr3a vs 1500

Check a specific Triumph Tr3a

Enter a registration to see that exact vehicle's full MOT history, advisories and recurring faults.

See all Triumph models · Learn about common MOT failures · what an MOT checks