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MOT reliability

Triumph Tr4a

1,832 vehicles · 11,552 completed MOT tests analysed
83%
MOT pass rate

Based on 1,832 Triumph Tr4a vehicles and 11,552 completed MOT tests, the Triumph Tr4a has an overall 83% pass rate, with an average recorded mileage of 54,289 miles.

1,832
Vehicles
11,552
MOT tests
686
Avg miles / year
1.1
Faults per test
1%
Dangerous-fault share

Triumph Tr4a problem areas

Where faults occur most across all Triumph Tr4a MOT tests:

  • Other92%
  • Steering9%
  • Emissions & nuisance6%
  • Tyres, wheels & suspension5%
  • Brakes4%
  • Seatbelts & equipment3%
  • Lamps & electrical2%
  • Visibility1%

Triumph Tr4a pass rate by age

How the Triumph Tr4a's MOT pass rate changes as it ages (buckets with 20+ tests).

Age (years)TestsPass rate
12584%
23174%
32896%
42789%
53291%
62492%
72789%
823100%
93591%
103884%
114484%
124587%
136082%
145890%
156888%
167874%
179181%
188786%
199982%
208885%

Fuel types: Petrol (1,825), Other (5), Diesel (1), Gas (1)

Most common Triumph Tr4a MOT faults

These are the faults and advisories recorded most often across Triumph Tr4a MOT tests:

  1. Parking brake: efficiency below requirements (3.7.B.7) (382 times)
  2. Oil leak (289 times)
  3. Nearside Front wheel bearing has slight play (2.5.A.3c) (257 times)
  4. Horn not working (1.6.2a) (224 times)
  5. Nearside Rear wheel bearing has slight play (2.6.2) (215 times)
  6. Offside Front wheel bearing has slight play (2.5.A.3c) (214 times)
  7. Oil leak, but not excessive (8.4.1 (a) (i)) (212 times)
  8. Steering column top bearing slightly worn (2.1.2c) (188 times)
  9. Offside Rear wheel bearing has slight play (2.6.2) (170 times)
  10. Windscreen washer provides insufficient washer liquid (8.2.3) (140 times)
  11. Nearside Front Front wheel bearing has slight play (2.5.A.3c) (132 times)
  12. Offside Front Front wheel bearing has slight play (2.5.A.3c) (109 times)
  13. Brakes imbalanced across an axle (3.7.B.5b) (104 times)
  14. Offside Rear Tyre worn close to the legal limit (4.1.E.1) (84 times)
  15. Offside Front Upper Suspension arm rubber bush deteriorated but not resulting in excessive movement (2.4.G.2) (82 times)

Triumph Tr4a pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
2016 2 2 100% 25,404
2015 10 34 74% 57,338
2014 5 20 85% 53,004
2013 4 28 89% 49,602
2011 2 17 94% 54,076
2010 2 13 85% 29,580
2009 3 31 94% 70,118
2007 2 21 76% 445,339
2006 6 64 89% 64,637
2005 2 39 92% 28,002
2004 6 56 91% 63,280
2003 3 14 79% 44,255
2002 4 42 88% 32,133
2001 2 35 86% 21,840
1999 2 11 91% 47,567
1998 3 32 94% 55,760
1997 10 117 79% 126,367
1996 8 76 79% 145,949
1995 6 69 84% 65,721
1994 12 175 80% 57,536
1993 8 74 95% 28,818
1992 14 150 87% 41,774
1991 14 174 85% 43,872
1990 12 154 87% 49,269
1989 9 118 79% 66,344
1988 6 72 89% 39,349
1987 4 68 84% 57,190
1986 4 18 61% 74,800
1985 4 39 74% 54,382
1984 8 45 82% 46,892
1983 5 58 88% 61,679
1982 3 50 76% 61,838
1981 1 14 100% 28,664
1980 5 60 85% 37,426
1979 5 85 86% 42,071
1978 6 84 74% 43,723
1977 2 17 71% 89,544
1975 1 10 80% 43,638
1974 2 27 85% 77,114
1973 1 8 88% 14,107
1972 1 12 100% 39,952
1971 1 1 100% 82,529
1970 2 34 82% 12,479
1969 4 51 98% 52,514
1968 23 265 81% 46,483
1967 321 3,747 82% 55,230
1966 258 3,020 82% 54,629
1965 207 2,177 82% 46,052
1963 1 12 58% 73,773
1962 1 7 100% 97,647

Triumph Tr4a reliability FAQ

Across 1,832 Triumph Tr4a vehicles in our MOT data, 83% pass the MOT (a 17% failure rate), with about 1.1 faults or advisories recorded per test.

The most frequently recorded Triumph Tr4a MOT issues are: Parking brake: efficiency below requirements (3.7.B.7); Oil leak; Nearside Front wheel bearing has slight play (2.5.A.3c).

The typical Triumph Tr4a in our data has covered around 54,289 miles.

Compare the Triumph Tr4a

See how the Triumph Tr4a stacks up against other Triumph models on MOT reliability:

Tr4a vs Toledo Tr4a vs Unknown Tr4a vs 2000 Tr4a vs 1500

Check a specific Triumph Tr4a

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