| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Registration plate issues | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Central Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Front All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Brake drum|s| insecure |3.2.A1g| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies does not work when front brake is pulled |1.3.1a| | 1 |
| Direction indicators affected by the operation of another lamp All |1.5.1c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |