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MOT reliability

Triumph Bonaville

9 vehicles · 63 completed MOT tests analysed
86%
MOT pass rate

Based on 9 Triumph Bonaville vehicles and 63 completed MOT tests, the Triumph Bonaville has an overall 86% pass rate, with an average recorded mileage of 20,462 miles.

9
Vehicles
63
MOT tests
324
Avg miles / year
0.7
Faults per test
0%
Dangerous-fault share

Triumph Bonaville problem areas

Where faults occur most across all Triumph Bonaville MOT tests:

  • Other86%
  • Steering11%
  • Brakes5%
  • Seatbelts & equipment5%
  • Lamps & electrical2%

Triumph Bonaville pass rate by age

Age (years)TestsPass rate
4250%

Fuel types: Petrol (9)

Most common Triumph Bonaville MOT faults

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

  1. Drive chain slightly loose (6.2.1d) (4 times)
  2. Rear suspension bush has slight free play (2.4.A2a(i)) (3 times)
  3. Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) (2 times)
  4. Rear wheel bearings have slight free play (2.4.A.2c) (2 times)
  5. Front Brake pad(s) close to minimum limit (3.2.A1f(i)) (2 times)
  6. Oil leak (2 times)
  7. Front Tyre not fitted in accordance with side wall instruction/s (4.1.2e) (1 times)
  8. Rear Tyre not fitted in accordance with side wall instruction/s (4.1.2e) (1 times)
  9. Registration plate incorrect (6.3.1a) (1 times)
  10. Brake pedal has inadequate reserve travel (3.1.3b) (1 times)
  11. Chain guard insecure (6.2.1c) (1 times)
  12. Front wheel bearings have excessive free play (2.3.5b) (1 times)
  13. Handlebar mounting slightly deteriorated (2.1.1d) (1 times)
  14. Headlamp switch faulty (1.2.4) (1 times)
  15. Offside Rear Footrest insecure (6.2.1a) (1 times)

Triumph Bonaville pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
2002 1 2 50% 1,667
1987 1 1 100% 4,156
1981 1 4 75% 7,902
1979 2 15 87% 42,994
1978 2 27 89% 33,172
1977 2 14 86% 9,053

Triumph Bonaville reliability FAQ

Across 9 Triumph Bonaville vehicles in our MOT data, 86% pass the MOT (a 14% failure rate), with about 0.7 faults or advisories recorded per test.

The most frequently recorded Triumph Bonaville MOT issues are: Drive chain slightly loose (6.2.1d); Rear suspension bush has slight free play (2.4.A2a(i)); Rear position lamp does not illuminate immediately when it is switched on (1.1.3a).

The typical Triumph Bonaville in our data has covered around 20,462 miles.

Compare the Triumph Bonaville

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

Bonaville vs Toledo Bonaville vs Unknown Bonaville vs 2000 Bonaville vs 1500

Check a specific Triumph Bonaville

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