| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 53 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 25 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 20 |
| Registration plate issues | 18 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 18 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Offside Front Footrest insecure |6.2.1a| | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Horn not working |1.7.3a| | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Rear Brake disc|s| cracked |3.2.A1g| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Nearside Rear Footrest insecure |6.2.1a| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Nearside Handlebar deformed |2.1.1b| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 2 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear brake disc in such a condition that it is seriously weakened | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Rear suspension component cracked |2.4.A.1a| | 2 |