| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 56 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 27 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 24 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 22 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 19 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 15 |
| Steering headbearing has excessive free play |2.2.2| | 14 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 12 |
| Nearside Indicator tell tale not functioning |1.5.2| | 12 |
| Registration plate issues | 11 |
| Offside Steering lock stop ineffective |2.1.3| | 11 |
| Front suspension has inadequate damping effect. |2.3.6c| | 10 |
| Nearside Steering lock stop ineffective |2.1.3| | 9 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 9 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Fuel cap sealing washer missing |7.2.2c| | 8 |
| Throttle operating incorrectly |6.2.1f| | 8 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Horn not working |1.7.3a| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Riders seat insecure |6.2.1a| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 5 |
| Exhaust excessively deteriorated |7.1.1a| | 5 |
| Rear reflector on motorcycle obscured |1.4.1| | 5 |
| Offside Steering lock stop missing |2.1.3| | 5 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 4 |
| Nearside Steering lock stop missing |2.1.3| | 4 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Fuel hose leaking |7.2.1a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Steering lock stop ineffective |2.1.3| | 3 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Nearside Indicator tell tale not operating correctly |1.5.2| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 3 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Fuel pipe leaking |7.2.1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Indicator tell tale not operating correctly |1.5.2| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Indicator switch defective |1.5.4| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Offside Indicator tell tale not functioning |1.5.2| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front wheel insecure |4.2.3b| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Rear Wheel more than one fixing loose |5.2.1 |a| |ii|| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Centre Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Nearside Indicator switch defective |1.5.4| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Centre Rear Riders seat insecure |6.2.1a| | 1 |
| Front Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake lever cracked |3.1.2c| | 1 |
| Rear Brake lever mounting cracked |3.1.2c| | 1 |
| Nearside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component both front rorks |2.3.4| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Front Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Central Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Front Upper Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Lower Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Rear Lower Brake performance not tested |3.3| | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Fuel system component leaking |7.2.1a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 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 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Lower Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake linkage excessively corroded |3.2.A1c| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Steering lock stop ineffective trapping BRAKE HOSE |2.1.3| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Nearside Front suspension assembly has an insecure fork brace |2.3.4d| | 1 |
| Nearside Front suspension assembly component missing |2.3.1| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Upper Exhaust mounting missing |7.1.1c| | 1 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear suspension component misaligned |2.4.A.1a| | 1 |
| Nearside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Offside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front wheel bearings are excessively tight |2.3.5b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Steering lock stop missing |2.1.3| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Shock absorber likely to become detached (5.3.2 (a) (ii)) | 1 |
| Rear Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Offside Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Fuel pipe leaking (6.1.3 (b) (i)) | 1 |
| Offside Rear Footrest missing foot rest stuck in the closed position (6.2.12 (a)) | 1 |