| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 37 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 18 |
| Headlamp aim beam image kick up to the offside |1.6| | 10 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Registration plate issues | 7 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Nearside Rear Footrest insecure |6.2.1a| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 2 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Offside Front 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 Front Handlebar handgrip missing |2.1.1c| | 1 |
| Offside Front Handlebar handgrip missing |2.1.1c| | 1 |
| Nearside Front Footrest missing |6.2.1a| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Fuel system component leaking carbs (6.1.3 (b) (i)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Nearside Front Front mudguard insecure |2.3.7| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Offside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Throttle operating incorrectly sticking on right hand lock |6.2.1f| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Offside Rear Brake pedal insecure rear wheel brace bar locking device missing |1.1.2 |e| |i|| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced swing arm |6.1.1 |c| |i|| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Rear Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Front Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Front position lamp incorrect colour blue |1.1.2a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 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 Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Rear Brake caliper insecure |1.1.16 |c| |i|| | 1 |
| Offside Front Brake caliper insecure |1.1.16 |c| |i|| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Steering headbearing has excessive wear or free play top nut loose |2.2.2 |f| |i|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Offside Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Steering headbearing has excessive free play top yoke nut loose |2.2.2| | 1 |
| Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Brake locking device missing rear brake lever r clip missing |3.2.A1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride wrong way around |6.2.1h| | 1 |
| Drive chain worn to excess tight spot |6.2.1e| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Direction indicators flashing more than 120 times per minute flasing to fast |1.5.1c| | 1 |
| Rear Direction indicators flashing more than 120 times per minute flashing to fast |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Steering lock stop maladjusted Handle bars hitting fuel tank |2.1.3| | 1 |
| Offside Front Steering lock stop maladjusted Handle bars hitting tank |2.1.3| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp missing |1.2.3a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort 35kgf |3.3.A1c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort 35kg |3.3.A1d| | 1 |
| Stop lamp affected by the operation of another lamp dims with indicator |1.3.2| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Brake hose connection leaking lefthand front hose to caliper union (1.1.12 (c)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front position lamp incorrect colour both |1.1.2a| | 1 |