| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 123 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 100 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 97 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 68 |
| Stop lamp remains on when the brake is released |1.3.1e| | 55 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 48 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 44 |
| Registration plate issues | 41 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 35 |
| Rear reflector on motorcycle obscured |1.4.1| | 33 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 28 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 27 |
| Horn not working |1.7.3a| | 25 |
| Steering headbearing has excessive free play |2.2.2| | 25 |
| Rear reflector on motorcycle missing |1.4.1| | 24 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 24 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 24 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 21 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 20 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 19 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 17 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 16 |
| Stop lamp remains on when the brakes are released | 15 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 15 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 13 |
| Riders seat insecure |6.2.1a| | 13 |
| Horn control defective |1.7.2a| | 12 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 11 |
| Rear position lamp insecure |1.1.1c| | 11 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 10 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 8 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 8 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 8 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 8 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 8 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 8 |
| Rear Brake lever insecure |3.1.2a| | 8 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 7 |
| Front Brake excessively binding |1.2.1 |f|| | 6 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 6 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Front suspension has inadequate damping effect. |2.3.6c| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Handlebar deformed |2.1.1b| | 5 |
| Rear reflector on motorcycle obscured |1.4.2b| | 5 |
| Rear Brake lever mounting insecure |3.1.2a| | 5 |
| Stop lamp missing |1.3.3a| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 4 |
| Front Horn not working |1.7.3a| | 4 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 4 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 3 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Motorcycle structure excessively damaged |6.1.1a| | 3 |
| Front Brake component is excessively corroded |3.1.5| | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Exhaust mounting missing |7.1.1c| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Nearside Rear Footrest insecure |6.2.1a| | 3 |
| Nearside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Stop lamp insecure |1.3.3b| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |