| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 21 |
| Headlamp aim out of alignment | 20 |
| Front wheel bearings have excessive free play |2.3.5b| | 16 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 12 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 12 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 11 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Horn not working |1.7.3a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Offside 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 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Drive chain excessively tight |6.2.1d| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Headlamp insecure |1.2.3b| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Nearside Handlebar deformed |2.1.1b| | 4 |
| Offside Handlebar deformed |2.1.1b| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Steering lock stop ineffective |2.1.3| | 3 |
| Nearside Front Direction indicator missing |1.5.1a| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Offside Headlamp insecure |1.2.3b| | 3 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Registration plate issues | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Brake pedal is inoperative |3.1.3c| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Front Handlebar deformed |2.1.1b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Nearside Footrest insecure |6.2.1a| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Centre Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Centre Rear Chain guard insecure |6.2.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Position lamp switch insecure |1.1.4b| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Brake performance not tested |3.3| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Offside Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Nearside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Inner Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| An item not tested |Manual| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Front Handlebar deformed |2.1.1b| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Offside Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Lower Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock brake lever (2.1.4 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Nearside Front Footrest missing |6.2.1a| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Nearside Front Motorcycle structure cracked |6.1.1a| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Brake pedal cracked |3.1.2c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Headlamp insecure |1.2.3b| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear Brake component has an inadequate repair |3.1.5| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Front Upper Horn not working |1.7.3a| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Upper Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Front Upper Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Nearside Front Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Rear Brake pedal cracked |3.1.2c| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Nearside Front Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 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 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Central Exhaust system insecure (6.1.2 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Front Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Rear Suspension arm pin or bush excessively worn swing arm. (5.3.4 (a) (i)) | 1 |
| Nearside Rear Suspension arm pin or bush excessively worn swing arm. (5.3.4 (a) (i)) | 1 |
| Nearside Front Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Offside Rear Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Headlamp missing |1.2.3a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Upper Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Centre Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Brake effort inadequate at a wheel brake barely working recording 26kg of brake force |1.2.1 |a| |i|| | 1 |
| Stop lamp not working brake light not working using either brake |4.3.1 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Offside Front Footrest missing |6.2.1a| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Front suspension assembly component missing |2.3.1| | 1 |
| Rear Rear suspension component loose |2.4.A.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |