| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 59 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Registration plate issues | 10 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 5 |
| Horn not working |1.7.3a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| All direction indicators not working |4.4.1 |a| |ii|| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Nearside Footrest insecure |6.2.1a| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Brake hose damaged | 1 |
| Brake performance not tested |1.2.1 |g|| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Direction indicators not working intermittent fault & insecure |1.5.1c| | 1 |
| Indicator switch insecure nearside switch cluster insecure |1.5.4| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Fork yoke deformed |2.1.1b| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort Front |3.3.A1d| | 1 |
| Horn missing |1.7.1| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Clutch lever positioned so it cannot be readily operated |6.2.7 |b|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Front Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Offside Front Lower Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Rear Lower Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Brake lever pivot has excessive free play (1.1.1 (b)) | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Upper Shock absorber likely to become detached locking nut loose (5.3.2 (a) (ii)) | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Brake hose leaking fluid |3.2.B4| | 1 |
| Offside Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Headlamp switch insecure |1.2.4| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Rear Footrest missing n/s+o/s (6.2.12 (a)) | 1 |
| Offside Handlebar grip insecure to handlebar switch gear loose (2.2.1 (d) (ii)) | 1 |
| Offside Front Footrest insecure locking nut missing (6.2.12 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front All direction indicators not working the left front indicator was not working. repaired (4.4.1 (a) (ii)) | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Steering headbearing excessively stiff or notchy Steering self centers |2.2.2 |f| |i|| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride rear axle locking pin |6.2.1h| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies front switch |1.3.1a| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Lower Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Wheel spindle loose no split pin fitted rear spindle |5.2.1 |c| |i|| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear All position lamps do not illuminate immediately when switched on light
|1.1.3a| | 1 |
| Stop lamp does not illuminate immediately a brake applies foot brake |1.3.1a| | 1 |
| Front suspension has inadequate damping effect. both front shocks weak |2.3.6c| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Brake reaction bracket insecure split pin missing |3.2.A1j| | 1 |
| Brake reaction bracket insecure securing pin missing |3.2.A1j| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Rear Brake linkage excessively corroded |3.2.A1c| | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |