| Most common failures | No# failures |
|---|
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 15 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 15 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 14 |
| Steering headbearing has excessive free play |2.2.2| | 13 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Headlamp aim out of alignment | 11 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Horn not working |1.7.3a| | 6 |
| Registration plate issues | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 2 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Centre Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Upper Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Decelerometer brake test no brake control achieves an efficiency of 30% |3.3.E1a| | 1 |
| Decelerometer brake test neither brake control achieves an efficiency of 25% |3.3.E1c| | 1 |
| Front An item not tested |Manual| | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Central Front Lower Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Brake locking device insecure |3.2.A1e| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Headlamp insecure front panel loose. (4.1.1 (c)) | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Offside Forks excessively corroded |2.2.2 |d| |i|| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock |2.1.4 |a|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Lower Brake lever attachment screws missing |3.1.2b| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp not working bulb was blown (4.2.1 (a)) | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Horn emits 2 or more alternating tones |1.7.3b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Lower Brake drum|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Upper Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Brake lever insecure rear brake lever |3.1.2a| | 1 |
| Rear Brake cable excessively corroded |3.2.A1b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Stop lamp not working front and rear |4.3.1 |a| |ii|| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Fuel cap missing |7.2.2a| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Nearside Front Upper Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Central Front Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| An item not tested |Manual| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Horn not working |1.7.3a| | 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 Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |