| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 23 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 19 |
| Registration plate issues | 18 |
| Steering headbearing has excessive free play |2.2.2| | 16 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 11 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 10 |
| Headlamp insecure |1.2.3b| | 9 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 7 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 5 |
| Rear Brake lever insecure |3.1.2a| | 4 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 4 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 4 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Brake lever mounting insecure |3.1.2a| | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Headlamp aim not tested |4.1.2 |b|| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Front Headlamp insecure |1.2.3b| | 2 |
| Rear wheel insecure |4.2.3b| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Fuel tank leaking |7.2.1a| | 2 |
| An item not tested |Manual| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 2 |
| Horn not working |1.7.3a| | 2 |
| Stop lamp insecure |1.3.3b| | 2 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Suspension component attachment bracket/mounting likely to fail wheel spindle nut no locking devise |5.3.3 |b| |ii|| | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Rear suspension component seized |2.4A2a|ii|| | 1 |
| Centre Front Lower Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 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 position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Rear Rear suspension component excessively bent |2.4.A.1a| | 1 |
| Front Headlamp missing |1.2.3a| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear spring corroded and seriously weakened |2.4A1b|ii|| | 1 |
| Inner Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Front Brake hose which buldges |3.2.B4| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Riders seat insecure latch not working (6.2.5 (a) (ii)) | 1 |
| Front Brake grabbing severely pivot needs lube (1.2.1 (c)) | 1 |
| Rear Brake excessively binding seized on hub arm (1.2.1 (f)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Centre Front Front position lamp insecure |1.1.1c| | 1 |
| Centre Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Lower Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded brake locks wheel when application released |3.2.A1h| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Brake cable excessively corroded |3.2.A1b| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Brake component leaking fluid |3.2.B4| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Brake performance not tested |3.3| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Brake lever mounting insecure |3.1.2a| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Lower Motorcycle structure cracked |6.1.1a| | 1 |
| Offside Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Offside Footrest insecure unable to use |6.2.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil o/s n/s |2.3.3| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Rear Stop lamp not working from either control 1 or 2 (4.3.1 (a) (ii)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Brake lever not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on low beam |1.1.3a| | 1 |
| Front position lamp missing head lamp loose and not secure |1.1.1a| | 1 |
| Shock absorber has a serious fluid leak both front (5.3.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Rear reflector on motorcycle dirty and function impaired |1.4.2a| | 1 |
| Front Lower Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil left |2.3.3| | 1 |
| Front Front shock absorber seal failed and leaking oil right |2.3.3| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |