| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 60 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 42 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 36 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 33 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 31 |
| Horn not working |1.7.3a| | 28 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 22 |
| Registration plate issues | 22 |
| Rear reflector on motorcycle missing |1.4.1| | 22 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 17 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Throttle operating incorrectly |6.2.1f| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 11 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 10 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 10 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 9 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 9 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 7 |
| Nearside Rear Direction indicator not working |1.5.1c| | 7 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Offside Rear Direction indicator insecure |1.5.3b| | 5 |
| Front suspension has inadequate damping effect. |2.3.6c| | 5 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 5 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Front Front mudguard insecure |2.3.7| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Front Horn not working |1.7.3a| | 4 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Rear suspension component loose |2.4.A.1a| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Offside Exhaust excessively deteriorated |7.1.1a| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Exhaust has part of the system missing |7.1.1a| | 3 |
| Horn control defective |1.7.2a| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 3 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Nearside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Rear Brake disc|s| cracked |3.2.A1g| | 3 |