| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 30 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Registration plate issues | 8 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 7 |
| Riders seat insecure |6.2.1a| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 6 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Rear position lamp insecure |1.1.1c| | 5 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Horn not working |1.7.3a| | 4 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Footrest missing |6.2.1a| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Front Direction indicator missing |1.5.1a| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Offside Rear Direction indicator missing |1.5.1a| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 2 |
| Steering lock stop ineffective |2.1.3| | 2 |
| Direction indicator missing |1.5.1a| | 2 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| An item not tested |Manual| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Rear Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Central Front Upper Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Nearside Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Brake hose leaking (1.1.12 (c)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Upper Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Centre Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Centre Riders seat insecure |6.2.1a| | 1 |
| Centre Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Front Handlebar deformed |2.1.1b| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear 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 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp dipped beam affected by the operation of another lamp Front Stop lamp illuminates headlight when applied |1.2.2c| | 1 |
| Headlamp at least one does not illuminate on dipped beam Rear Stop lamp illuminates headlight when applied |1.2.2a|i|| | 1 |
| Headlamp aim beam image too far to the left |1.6.4| | 1 |
| Offside Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Offside Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Front suspension assembly component missing front fork brace |2.3.1| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Sidecar wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Upper Direction indicators not working |1.5.1c| | 1 |
| Centre Rear Upper Direction indicators not working |1.5.1c| | 1 |
| Offside Front Upper Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Rear Upper Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Rear Lower Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Lower Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Rear Upper Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Rear Upper Footrest insecure |6.2.1a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Brake hose damaged | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Position lamp switch insecure |1.1.4b| | 1 |
| Offside Front Position lamp switch insecure |1.1.4b| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Front Upper Indicator switch insecure |1.5.4| | 1 |
| Offside Front Upper Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Lower Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Lower Footrest insecure |6.2.1a| | 1 |
| Offside An item not tested |Manual| | 1 |
| Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Indicator switch insecure |1.5.4| | 1 |
| Centre Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |