| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 45 |
| Registration plate issues | 18 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Registration plate lamp issues | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Horn not working |1.6.2a| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Horn not working |1.7.3a| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 3 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 3 |
| Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Offside Rear Direction indicator not working |1.4.A.2c| | 2 |
| Hazard warning tell tale not working correctly |1.4.B.1e| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear Stop lamp not working |1.2.1b| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear brake disc in such a condition that it is seriously weakened | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| 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 reflector on motorcycle obscured |1.4.1| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Nearside Rear Upper Suspension arm has excessive play in a pin/bush |2.4.G.2| | 2 |
| Nearside Rear Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 2 |
| Offside Rear Upper Suspension arm has excessive play in a pin/bush |2.4.G.2| | 2 |
| Offside Rear Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Nearside Front Fuel hose leaking |7.2.1a| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 1 |
| Nearside Brake lever excessively damaged and seriously weakened |3.5.1e| | 1 |
| Indicator tell tale inoperative |1.4.A.2a| | 1 |
| Centre Front position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Brake lever is damaged so that the brake cannot be readily applied |9.3.1g| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Front Direction indicators not working AND REAR NOT WORKING AND MISSING |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies FRONT AND REAR NOT WORKING |1.3.1a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Nearside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Brake hose excessively deteriorated | 1 |
| Nearside Stop lamp not working |1.2.1b| | 1 |
| Offside Stop lamp not working |1.2.1b| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Stop lamp remains on when the brake is released rear brake |1.3.1e| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Stop lamp emits other than a steady red light Brake light iluminate itermitently with front application |1.3.1b| | 1 |
| Rear Rear reflector on motorcycle missing Rear reflector missing |1.4.1| | 1 |
| Nearside Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front position lamp incorrect colour |1.1.2a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 1 |
| Rear Rear position lamp|s| not working |1.1.A.3b| | 1 |
| Offside Obligatory mirror missing |8.1.1| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Offside Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Rear Rear reflector missing |1.5.1a| | 1 |
| Parking brake is not capable of being maintained in operation by direct mechanical action only |3.1.2| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Rear Parking brake efficiency below requirements |3.7.B.7| | 1 |
| Nearside Front Lower Front suspension assembly has excessive free play in the pivot bushes |9.2.5d| | 1 |
| Offside Front Lower Front suspension assembly has excessive free play in the pivot bearings |9.2.5d| | 1 |
| Offside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 1 |
| Offside Rear Rear wheel bearing has excessive play |2.6.2| | 1 |
| Offside Front Upper Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Front Direction indicators not working |1.4.A.2c| | 1 |
| Rear Rear reflector missing |1.5.1a| | 1 |
| Steering system excessively tight |2.2.D.1| | 1 |
| Brake fluid reservoir fluid level dangerously low no pressure in front brake |3.2.B1d| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Brake pedal has inadequate reserve travel too much travel |3.1.3b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Lower Suspension arm locating pin locking device missing |2.4.G.3b| | 1 |
| Position lamp switch cannot be operated from the normal driving position |1.1.A.1| | 1 |
| Headlamp switch missing |1.7.1| | 1 |
| Offside Front Stop lamp not working |1.2.1b| | 1 |
| Direction indicators not working |1.4.A.2c| | 1 |
| Hazard warning lamps inoperative |1.4.B.1b| | 1 |
| Headlamp aim not tested |1.8.A.1c| | 1 |
| Nearside Rear Wheel hub spigot mounting excessively worn |4.2.B.5| | 1 |
| Speedometer clearly inoperative |6.7.2| | 1 |
| Horn not working missing |7.7 |a| |ii|| | 1 |
| Parking brake lever releases when knocked |3.1.6a| | 1 |
| Rear reflector obviously incorrectly positioned |1.5.1a| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Offside Handlebar cracked |2.1.1b| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Rear Wheel spoke missing |4.2.1b| | 1 |
| Centre Stop lamp not working |1.2.1b| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Suspension arm fractured |5.3.3 |b| |ii|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Locking tabs for rear sprocket bolts. |6.2.1h| | 1 |
| Brake rod excessively damaged |3.2.A1c| | 1 |
| Nearside Rear Anti-roll bar has excessive play in a pin/bush `D` bush |2.4.G.2| | 1 |
| Offside Rear Anti-roll bar has excessive play in a pin/bush `D` bush |2.4.G.2| | 1 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Nearside Front suspension locking device missing ball joint split pin |2.5.A.4| | 1 |
| Nearside Steering locking device missing track rod end split pin |2.2.C.1g| | 1 |
| Nearside Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Headlamp not working on dipped beam |1.7.5a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake pedal is inoperative rear brake pedal seized |3.1.3c| | 1 |
| Rear Brake fluid significantly below minimum mark |1.1.10 |d| |ii|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Parking brake lever defective so that it cannot be satisfactorily operated |1.1.6 |d|| | 1 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Brake drum|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear wheel spindle securing nut locking device missing rear brake torquearm |2.4.A.2b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain split link |6.2.1h| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket bolt missing |6.2.1h| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear lock tab missing sprocket |6.2.1h| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Front position lamp|s| not working |1.1.A.3b| | 1 |
| Nearside Obligatory mirror missing |8.1.1| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition |7.1.4| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Stop lamp missing not working on front brake |1.3.3a| | 1 |
| Rear position lamp|s| not working |1.1.A.3b| | 1 |
| Horn not loud enough to be heard by another road user |1.6.2b| | 1 |
| Headlamp switch faulty dip and main beam incorrectly wired |1.7.1| | 1 |
| rear brake excessively fluctuating |3.7.B.3| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Suspension component pin or bush excessively worn rear linkage bearings |5.3.4 |a| |i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Horn missing |1.7.1| | 1 |
| Brake locking device missing rear brake pedal split pin missing |3.2.A1e| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride front sprocket retaining nut loose |6.2.1h| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Wheel has loose rivet/s or bolts front spindle pinch bolt (5.2.2 (e) (i)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 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 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Stop lamp not working front control (4.3.1 (a) (ii)) | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Handlebar mounting insecure bolt loose (2.2.1 (a) (i)) | 1 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the steering Forks and yoke out of alignment (2.4 (a)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Offside Front All position lamps not working (4.2.1 (a)) | 1 |
| Nearside Front Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Exhaust system insecure mounting/fixings incorrect (6.1.2 (a)) | 1 |
| Nearside Rear Footrest insecure loose (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |