| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 67 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 64 |
| Registration plate issues | 35 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 30 |
| Registration plate lamp issues | 27 |
| Drive chain excessively loose |6.2.1d| | 26 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 26 |
| Throttle operating incorrectly |6.2.1f| | 25 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 24 |
| Drive chain worn to excess |6.2.1e| | 16 |
| Horn not working |1.7.3a| | 15 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 13 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 12 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 10 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 9 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 9 |
| Drive chain excessively tight |6.2.1d| | 8 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 7 |
| Offside Handlebar deformed |2.1.1b| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 7 |
| Front Brake excessively binding (1.2.1 (f)) | 7 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 6 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Drive chain excessively tight |6.2.1d| | 5 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 5 |
| Rear Drive chain excessively loose |6.2.1d| | 5 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Brake performance not tested |3.3| | 3 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 3 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 3 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Drive chain worn to excess |6.2.1e| | 3 |
| Rear Brake performance not tested |3.3| | 3 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Front Floor brake test indicates a severely juddering brake |3.3C2d.| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Offside Front Lower Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear wheel spindle loose |2.4.A.2b| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front An item not tested |Manual| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |