| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 141 |
| Headlamp aim out of alignment | 93 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 56 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 55 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 45 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 43 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 41 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 33 |
| Steering headbearing has excessive free play |2.2.2| | 28 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 28 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Registration plate issues | 21 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 20 |
| Front suspension has inadequate damping effect. |2.3.6c| | 19 |
| Horn not working |1.7.3a| | 18 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 18 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 17 |
| Riders seat insecure |6.2.1a| | 16 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 14 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 13 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 11 |
| Registration plate lamp issues | 11 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Headlamp aim not tested |1.6| | 11 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 10 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 9 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 9 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 8 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 8 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 6 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 6 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Front Brake lever insecure |3.1.2a| | 5 |
| Rear Brake lever insecure |3.1.2a| | 5 |
| Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 5 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 5 |
| Front Brake lever mounting insecure |3.1.2a| | 5 |
| Horn not working (7.7 (a) (ii)) | 5 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Fuel cap sealing washer missing |7.2.2c| | 4 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 4 |
| Offside Steering lock stop ineffective |2.1.3| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 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 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Steering lock stop ineffective |2.1.3| | 3 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Indicator switch defective |1.5.4| | 3 |
| Nearside Steering lock stop ineffective |2.1.3| | 3 |