| Most common failures | No# failures |
|---|
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 39 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 31 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 29 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 28 |
| Rear reflector on motorcycle missing |1.4.1| | 26 |
| Headlamp aim out of alignment | 20 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 19 |
| Front wheel bearings have excessive free play |2.3.5b| | 17 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 15 |
| Riders seat insecure |6.2.1a| | 14 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 13 |
| Rear reflector on motorcycle obscured |1.4.1| | 13 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 12 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 9 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 8 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Nearside Front Direction indicators not working |1.5.1c| | 6 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Horn not working |1.7.3a| | 5 |
| Offside Front Direction indicator not working |1.5.1c| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 5 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Registration plate issues | 4 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 4 |
| Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Nearside Front suspension assembly component excessively corroded. |2.3.1| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Rear Front mudguard insecure |2.3.7| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Front position lamp incorrect colour |1.1.2a| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake lever pivots excessively worn |3.1.3a| | 2 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Offside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Indicator switch defective |1.5.4| | 2 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front suspension assembly component excessively corroded. |2.3.1| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |