| Most common failures | No# failures |
|---|
| Registration plate issues | 27 |
| Headlamp aim out of alignment | 24 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear 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| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Rear not working (4.3.2 (a) (iii)) | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Offside Rear Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Centre Footrest insecure |6.2.1a| | 1 |
| Centre Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Centre Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake master cylinder severely damaged |3.2.B1b| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Rear Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Offside Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Fuel hose leaking |7.2.1a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Horn control not readily accesible. |1.7.2a| | 1 |
| Rear Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Rear Drive chain fouling another component |6.2.1d| | 1 |
| Offside Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Throttle operating incorrectly revs go up on turn right (6.2.7 (a) (i)) | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Headlamp aim beam image kick up to the offside tape on headlamp lense (1.6) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Brake component is fractured |3.1.5| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |