| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 27 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Registration plate issues | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Registration plate lamp issues | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Horn not working |1.7.3a| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Decelerometer brake test indicates a sticking brake |3.3.E1d| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Drive chain worn to excess |6.2.1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Wheel alignment incorrect which adversely affects the handling rear sprocket bolts fouling (2.4 (a)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Offside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing split pin
|3.2.A1j| | 1 |
| Nearside Rear suspension component loose |2.4.A.1a| | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Offside Front Footrest insecure O/S front foot rest has securing bolt missing (6.2.12 (a)) | 1 |
| Front Brake caliper insecure Front brake caliper slide insecure (1.1.16 (c) (i)) | 1 |
| Fork yoke deformed |2.1.1b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Rear Brake linkage clevis joint excessively worn |3.2.A1d| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Brake disc|s| excessively worn Below minimum thickness 4mm |3.2.A1l| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Rear Steering linkage has excessive free play |2.2.2| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Front Brake performance not tested (1.2.1 (g)) | 1 |
| Central Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Stop lamp not working not operating from rear brake (4.3.1 (a) (ii)) | 1 |
| Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Shock absorber has negligible damping effect both forks (5.3.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Rear position lamp adversely affected by the operation of another lamp Indicators |1.1.3b| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Nearside Rear Upper Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Upper Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp aim headlamp deteriorated and function impaired bulb incorrectly fitted - aim incorrect |1.2.3a| | 1 |
| Rear suspension bearing has excessive free play excess play swinging arm bearings |2.4.A2a|i|| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Headlamp switch faulty high and low switch sticking |1.2.4| | 1 |