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MOT reliability

Triumph Bon

6 vehicles · 36 completed MOT tests analysed
94%
MOT pass rate

Based on 6 Triumph Bon vehicles and 36 completed MOT tests, the Triumph Bon has an overall 94% pass rate, with an average recorded mileage of 20,120 miles.

6
Vehicles
36
MOT tests
240
Avg miles / year
0.1
Faults per test
0%
Dangerous-fault share

Triumph Bon problem areas

Where faults occur most across all Triumph Bon MOT tests:

  • Other125%
  • Lamps & electrical25%

Triumph Bon pass rate by age

Age (years)TestsPass rate

Fuel types: Petrol (6)

Most common Triumph Bon MOT faults

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

  1. Roller brake test Higher brake efficiency normally obtainable. (3.3.A2a) (1 times)
  2. Roller brake test Higher brake efficiency normally obtainable. (3.3.A2b) (1 times)
  3. Front Front wheel bearings have slight free play (2.3.5b) (1 times)
  4. Drive chain slightly loose (6.2.1d) (1 times)
  5. Rear Tyre tread depth is below minimum requirements of 1.0mm (4.1.3(ii)) (1 times)
  6. Headlamp aim too high (4.1.2 (a)) (1 times)

Triumph Bon pass rate by registration year

YearVehiclesTestsPass rateAvg mileage
1983 1 17 88% 36,830
1979 1 4 100% 8,023
1977 1 1 100% 3,725
1973 1 1 100% 22,037
1971 1 8 100% 29,989
1969 1 5 100%

Triumph Bon reliability FAQ

Across 6 Triumph Bon vehicles in our MOT data, 94% pass the MOT (a 6% failure rate), with about 0.1 faults or advisories recorded per test.

The most frequently recorded Triumph Bon MOT issues are: Roller brake test Higher brake efficiency normally obtainable. (3.3.A2a); Roller brake test Higher brake efficiency normally obtainable. (3.3.A2b); Front Front wheel bearings have slight free play (2.3.5b).

The typical Triumph Bon in our data has covered around 20,120 miles.

Compare the Triumph Bon

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


Check a specific Triumph Bon

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