| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 2 |
| Front Wheel corroded significantly reducing the original strength |4.2.1a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| An item not tested |Manual| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear suspension has a fracture of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear shock absorber has inadequate damping effect. adjusted |2.4.A.3b| | 1 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Wheel fractured (5.2.2 (a)) | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Horn not working |1.7.3a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |