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MOT reliability

Triumph Bonneville t120

1,500 vehicles · 1,192 completed MOT tests analysed
93%
MOT pass rate

Based on 1,500 Triumph Bonneville t120 vehicles and 1,192 completed MOT tests, the Triumph Bonneville t120 has an overall 93% pass rate, with an average recorded mileage of 6,007 miles.

1,500
Vehicles
1,192
MOT tests
1,668
Avg miles / year
0.2
Faults per test
4%
Dangerous-fault share

Triumph Bonneville t120 problem areas

Where faults occur most across all Triumph Bonneville t120 MOT tests:

  • Tyres, wheels & suspension33%
  • Other29%
  • Lamps & electrical23%
  • Brakes17%
  • Steering11%
  • Body & structure8%
  • Identification & plates2%
  • Emissions & nuisance2%

Triumph Bonneville t120 pass rate by age

How the Triumph Bonneville t120's MOT pass rate changes as it ages (buckets with 20+ tests).

Age (years)TestsPass rate
14100%
21694%
352293%
430992%
57693%
66100%
7888%
8683%
94100%
101100%
141100%
151100%
162100%
171100%
181100%
191100%
201100%

Fuel types: Petrol (1,483), Other (16), Diesel (1)

Most common Triumph Bonneville t120 MOT faults

These are the faults and advisories recorded most often across Triumph Bonneville t120 MOT tests:

  1. Front Tyre worn close to the legal limit (5.2.3 (e)) (34 times)
  2. Rear Tyre worn close to the legal limit (5.2.3 (e)) (27 times)
  3. Headlamp aim too low (4.1.2 (a)) (12 times)
  4. Front Brake indicates slight fluctuation of brake effort (1.2.1 (e)) (11 times)
  5. Headlamp not working on dipped beam (4.1.1 (a) (ii)) (10 times)
  6. Headlamp aim too high (4.1.2 (a)) (9 times)
  7. Drive chain slightly loose (6.1.7 (c) (i)) (9 times)
  8. Rear Brake pad(s) close to minimum limit (1.1.13 (a)) (8 times)
  9. Rear Tyre tread depth is below minimum requirements of 1.0mm (5.2.3 (e)) (5 times)
  10. Front Brake pad(s) close to minimum limit (1.1.13 (a)) (4 times)
  11. Registration plate does not conform to the specified requirements (0.1 (d)) (4 times)
  12. Rear Wheel alignment slightly misaligned (2.4 (a)) (4 times)
  13. Rear Brake indicates slight fluctuation of brake effort (1.2.1 (e)) (4 times)
  14. Front Headlamp aim too low (4.1.2 (a)) (3 times)
  15. Rear suspension bush has slight free play (2.4.A2a(i)) (3 times)

Triumph Bonneville t120 pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
2024 1 1 0% —
2023 78 86 94% 4,859
2022 251 391 94% 4,776
2021 181 421 92% 6,700
2018 1 6 83% 6,817
2017 4 23 96% 13,792
2016 3 16 88% 12,582
2014 2 6 100% 14,738
2009 1 8 88% 1,888
1992 1 9 100% 22,873
1990 1 5 100% 3,901
1986 1 8 100% 19,839
1973 2 5 100% 8,719
1972 1 6 100% 17,577
1971 2 5 40% 41
1970 7 39 100% 21,039
1969 3 15 80% 3,349
1968 3 23 87% 13,768
1967 2 20 85% 15,572
1966 1 4 100% 6,823
1965 1 1 100% —
1963 1 2 100% 373
1961 2 8 100% 5,216
1960 2 13 100% 3,642

Triumph Bonneville t120 reliability FAQ

Across 1,500 Triumph Bonneville t120 vehicles in our MOT data, 93% pass the MOT (a 7% failure rate), with about 0.2 faults or advisories recorded per test.

The most frequently recorded Triumph Bonneville t120 MOT issues are: Front Tyre worn close to the legal limit (5.2.3 (e)); Rear Tyre worn close to the legal limit (5.2.3 (e)); Headlamp aim too low (4.1.2 (a)).

The typical Triumph Bonneville t120 in our data has covered around 6,007 miles.

Compare the Triumph Bonneville t120

See how the Triumph Bonneville t120 stacks up against other Triumph models on MOT reliability:

Bonneville t120 vs Toledo Bonneville t120 vs Unknown Bonneville t120 vs 2000 Bonneville t120 vs 1500

Check a specific Triumph Bonneville t120

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