| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front position lamp does not illuminate immediately when switched on no dip beam |1.1.3a| | 1 |
| Throttle operating incorrectly stick open when released |6.2.1f| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Centre Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front Steering lock stop maladjusted |2.1.3| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front shock absorber seal failed and leaking oil n/s fork seal failed |2.3.3| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Service brake: efficiency below requirements |3.7.B.7| | 1 |
| Brakes imbalanced across an axle | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Stop lamp not working sidecar (4.3.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Nearside Front Brake caliper leaking and braking performance affected (1.1.16 (b) (ii)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |