| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 16 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Horn not working |1.7.3a| | 3 |
| Registration plate issues | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Pillion seat insecure |6.2.6 |a| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Brake hose excessively deteriorated | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Wheel fixing loose (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. Both shocks lacking in damping |2.4.A.3b| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Brake component insecure arm split pin missing (1.1.21 (c)) | 1 |
| Nearside Rear Footrest insecure split pin missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest insecure split pin missing (6.2.12 (a)) | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride sprocket |6.2.1h| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Footrest missing Rear foot pegs missing |6.2.12 |a|| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 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 Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Front mudguard insecure bolt missing |2.3.7| | 1 |
| Front Fuel hose leaking |7.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling adjustment to left required |2.5.1| | 1 |
| Brake locking device insecure disc bolt lock device not in place - Loctite and align plate |3.2.A1e| | 1 |
| Nearside Rear Footrest insecure contaminated with oil |6.2.1a| | 1 |
| Front Brake lever has restricted free movement |1.1.15 |e|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front position lamp does not illuminate immediately when switched on blown bulb |1.1.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Headlamp at least one does not illuminate on dipped beam (1.2.2a(i)) | 1 |
| Headlamp at least one does not illuminate on main beam (1.2.2a(ii)) | 1 |
| Offside Rear Direction indicator not working (1.5.1c) | 1 |