The MOT Files

Motorcycle reliability file

Triumph Bonneville Street TWIN MOT pass rate & common failures

From 501 recorded MOT tests of the Triumph Bonneville Street TWIN, published by DVSA.

Data updated

Quick answer

The Triumph Bonneville Street TWIN passes 92.8% of MOT tests, against 86.5% for all motorcycles. The most recorded failure is "Brake lining or pad worn below 1.0mm", in 27.3% of failed tests.

At a glance

Recorded pass rate

92.8%unadjusted501 tests

6.3 points above the fleet average of 86.5%. The examples tested do not cover a wide enough spread of ages and mileages to compare fairly against the rest of the fleet, so no rank is claimed; the failure record below stands on its own.

DVSA recorded wording

Most common failure items

Share of failed Triumph Bonneville Street TWIN tests in which each item was recorded. One failed test often lists several, so these do not sum to 100%.

  1. 1.Brake lining or pad worn below 1.0mm27.3%

    3 occurrences

  2. 2.Tyre tread depth not in accordance with the requirements18.2%

    2 occurrences

  3. 3.A transmission belt, chain, sprocket or pulley excessively loose or worn18.2%

    2 occurrences

  4. 4.A stop lamp(s) does not illuminate by the operation of both brake controls or remains on when the brakes are released9.1%

    1 occurrences

  5. 5.A headlamp missing, inoperative or more than ½ not functioning in the case of LED9.1%

    1 occurrences

  6. 6.A tyre with a lump, bulge or tear caused by separation or partial failure of its structure, including any lifting of the tread rubber9.1%

    1 occurrences

  7. 7.A stop lamp(s) remains on when the brakes are released9.1%

    1 occurrences

  8. 8.A position lamp adversely affected by the operation of any other lamp9.1%

    1 occurrences

  9. 9.Reflector missing or reflecting white to the rear9.1%

    1 occurrences

  10. 10.A footrest missing or insecure9.1%

    1 occurrences

  11. 11.Audible warning not working9.1%

    1 occurrences

  12. 12.Number plate does not conform to the specified requirements9.1%

    1 occurrences

Warnings without a failure

Most common advisories

Share of all Triumph Bonneville Street TWIN tests carrying each advisory.

  1. 1.Tyre tread depth not in accordance with the requirements6.8%

    34 tests

  2. 2.Brake lining or pad worn below 1.0mm4.2%

    21 tests

  3. 3.A transmission belt, chain, sprocket or pulley excessively loose or worn1.6%

    8 tests

  4. 4.Excessive fluctuation in brake effort through each wheel revolution1.2%

    6 tests

  5. 5.Tyre tread depth not in accordance with the requirements0.8%

    4 tests

  6. 6.A transmission belt, chain, sprocket or pulley excessively loose or worn0.8%

    4 tests

  7. 7.Steering head bearings excessively stiff, notchy, or with excessive wear or play0.6%

    3 tests

  8. 8.Brake control so positioned, bent or shortened that the brake cannot be readily applied.0.6%

    3 tests

What gets tested

The Bonneville Street TWIN fleet

Average mileage recorded at test
5,558
Test classes
class 2: 501

Compare within the range

Other Triumph motorcycles

Common questions

What is the MOT pass rate for a Triumph Bonneville Street TWIN?
92.8% unadjusted, from 501 DVSA tests. The average across all motorcycles is 86.5%.
What does a Triumph Bonneville Street TWIN fail its MOT on?
"Brake lining or pad worn below 1.0mm" is recorded in 27.3% of failed Triumph Bonneville Street TWIN tests, followed by "Tyre tread depth not in accordance with the requirements" (18.2%). One failed test often lists several items.
What mileage does a Triumph Bonneville Street TWIN usually have at its MOT?
5,558 miles on average across every age tested, so a description of the fleet rather than an annual figure. Motorcycle mileages are low and vary enormously with use; a commuter bike and a weekend bike of the same age can differ by a factor of ten.

Analysis built from DVSA data of