| Most common failures | No# failures |
|---|
| Registration plate issues | 25 |
| Headlamp aim out of alignment | 15 |
| Rear reflector on motorcycle missing |1.4.1| | 13 |
| Front wheel bearings have excessive free play |2.3.5b| | 10 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front Wheel spoke excessively loose |4.2.1b| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Horn not working |1.7.3a| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Brake excessively binding |1.2.1 |f|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Built up wheel has a loose rivet/s Loose spokes on front wheel. |4.2.1c| | 1 |
| Front Fork yoke deformed |2.1.1b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Lower Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Rear Wheel spoke excessively loose two spokes loose |4.2.1b| | 1 |
| Direction indicators not working all indicators not working correctly |1.5.1c| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Steering movement excessively `notchy` 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 Wheel spoke excessively loose |4.2.1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Throttle operating incorrectly twist grip loose |6.2.1f| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Rear Direction indicators affected by the operation of another lamp both |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake hose excessively deteriorated | 1 |
| Brake hose damaged | 1 |
| Nearside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 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 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |