| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Horn not working |1.7.3a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake performance not tested |3.3| | 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 |
| Rear Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock clutch and brake lever fouling on fairing mounting frame (2.1.4 (b)) | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Suspension component pin or bush excessively worn mono shock |5.3.4 |a| |i|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Chain guard insecure |6.1.7 |i|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Nearside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Footrest insecure |6.2.12 |a|| | 1 |
| Brake pedal pivot excessively worn |1.1.1 |b|| | 1 |
| Brake pedal pivot has excessive free play |1.1.1 |b|| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake master cylinder has an excessively worn master cylinder pivot. |3.2.B5| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Brake performance not tested No rear brake (1.2.1 (g)) | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Handlebar grip missing (2.2.1 (d) (i)) | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Brake component leaking fluid |3.2.B4| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator obscured |1.5.1a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake lining|s| contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |