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MOT reliability

Triumph Bonniville t140

2 vehicles · 11 completed MOT tests analysed
91%
MOT pass rate

Based on 2 Triumph Bonniville t140 vehicles and 11 completed MOT tests, the Triumph Bonniville t140 has an overall 91% pass rate, with an average recorded mileage of 17,904 miles.

2
Vehicles
11
MOT tests
157
Avg miles / year
1.9
Faults per test
0%
Dangerous-fault share

Triumph Bonniville t140 problem areas

Where faults occur most across all Triumph Bonniville t140 MOT tests:

  • Other86%
  • Steering14%
  • Lamps & electrical10%

Triumph Bonniville t140 pass rate by age

Age (years)TestsPass rate

Fuel types: Petrol (2)

Most common Triumph Bonniville t140 MOT faults

These are the faults and advisories recorded most often across Triumph Bonniville t140 MOT tests:

  1. Rear Drive chain sprocket slightly worn (6.2.1e) (3 times)
  2. Front Brake disc(s) is slightly distorted (3.2.A1m) (2 times)
  3. Front suspension has a slightly reduced damping effect (2.3.6c) (2 times)
  4. Front Lower Steering headbearing has slight free play (2.2.2) (1 times)
  5. Front Upper Steering headbearing has slight free play (2.2.2) (1 times)
  6. Drive chain lightly rubbing (6.2.1d) (1 times)
  7. Drive chain slightly loose (6.2.1d) (1 times)
  8. Drive chain worn but not considered excessive (6.2.1e) (1 times)
  9. Front Roller brake test indicates slight fluctuation of brake effort (3.3.A1d) (1 times)
  10. Front Wheel has a slightly distorted bead rim. (4.2.2) (1 times)
  11. Nearside Rear Lower Rear suspension bush deteriorated but not excessively (2.4.A2a(i)) (1 times)
  12. Nearside Rear Upper Rear suspension bush deteriorated but not excessively (2.4.A2a(i)) (1 times)
  13. Offside Rear Lower Rear suspension bush deteriorated but not excessively (2.4.A2a(i)) (1 times)
  14. Offside Rear Upper Rear suspension bush deteriorated but not excessively (2.4.A2a(i)) (1 times)
  15. Rear Roller brake test indicates slight fluctuation of brake effort (3.3.A1d) (1 times)

Triumph Bonniville t140 pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
1979 1 4 75% 11,466
1977 1 7 100% 24,342

Triumph Bonniville t140 reliability FAQ

Across 2 Triumph Bonniville t140 vehicles in our MOT data, 91% pass the MOT (a 9% failure rate), with about 1.9 faults or advisories recorded per test.

The most frequently recorded Triumph Bonniville t140 MOT issues are: Rear Drive chain sprocket slightly worn (6.2.1e); Front Brake disc(s) is slightly distorted (3.2.A1m); Front suspension has a slightly reduced damping effect (2.3.6c).

The typical Triumph Bonniville t140 in our data has covered around 17,904 miles.

Compare the Triumph Bonniville t140

See how the Triumph Bonniville t140 stacks up against other Triumph models on MOT reliability:

Bonniville t140 vs Toledo Bonniville t140 vs Unknown Bonniville t140 vs 2000 Bonniville t140 vs 1500

Check a specific Triumph Bonniville t140

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