| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 42 |
| Registration plate issues | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Parking brake: efficiency below requirements |3.7.B.7| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Exhaust emissions carbon monoxide content excessive |7.3.B.1a| | 7 |
| Horn not working |1.7.3a| | 6 |
| Registration plate lamp issues | 6 |
| Brake pipe excessively corroded | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Brake hose excessively deteriorated | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 3 |
| Nearside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Nearside Headlamp not working on main beam |1.7.5a| | 3 |
| 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| | 3 |
| Offside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 3 |
| Fuel system component leaking |7.2.1a| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Rear parking brake recording little or no effort | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Windscreen wiper does not clear the windscreen effectively | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Nearside Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Rear wheel bearing has excessive play |2.6.2| | 2 |
| Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 2 |
| Nearside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 2 |
| Offside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 2 |
| Brakes imbalanced across an axle | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 2 |
| Parking brake lever has no reserve travel |3.1.6b| | 2 |
| Rear Exhaust system not adequately supported |7.1.1| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 2 |
| Offside Headlamp not working on main beam |1.7.5a| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Direction indicators not working |1.4.A.2c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Direction indicators flashing less than 60 times a minute |1.4.A.2g| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Offside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Front Horn not working |1.6.2a| | 1 |
| Front Steering component mounting prescribed area is fractured |2.2.C.1h| | 1 |
| Parking brake lever defective so that it cannot be satisfactorily operated |3.1.3c| | 1 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 1 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 1 |
| Offside Rear Stop lamp|s| all not working |4.3.1 |a| |iii|| | 1 |
| Nearside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Offside Rear wheel cylinder securing device missing |3.5.1j| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Offside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator excessively damaged so that it is not visible from a reasonable distance |1.4.A.2e| | 1 |
| Offside Rear Direction indicator excessively damaged so that it is not visible from a reasonable distance |1.4.A.2e| | 1 |
| Brake servo vacuum pipe collapsed |3.6.C.1b| | 1 |
| Front Shock absorber has a serious fluid leak both (5.3.2 (b)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 1 |
| Offside Front brake caliper has restricted free movement |3.5.1k| | 1 |
| Nearside Front Rear wheel bearing has excessive play |2.6.2| | 1 |
| Nearside Rear Trailing arm worn and seriously weakened |2.4.G.1| | 1 |
| Offside Rear Trailing arm worn and seriously weakened |2.4.G.1| | 1 |
| Offside Rear wheel cylinder has restricted free movement |3.5.1k| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 1 |
| Rear brake binding | 1 |
| Driver`s door cannot be opened from outside the vehicle |6.2.B.1b| | 1 |
| Offside Rear Trailing arm attachment bracket/mounting insecure |2.4.G.1| | 1 |
| Offside Front Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Nearside Stop lamp not working |1.2.1b| | 1 |
| Offside Stop lamp not working |1.2.1b| | 1 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 1 |
| Offside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 1 |
| Offside Rear Stop lamp not working |1.2.1b| | 1 |
| Offside Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Brake performance not tested |3.3| | 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 a sticking brake |3.3.A1a| | 1 |
| Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Service brake: efficiency below requirements |3.7.D.4| | 1 |
| Nearside Front Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 1 |
| Fuel pipe leaking |7.2.3| | 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 Front position lamp|s| insecure |1.1.A.3a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Fuel cap leaking |6.1.3 |b| |i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Hazard warning lamps inoperative |1.4.B.1b| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Offside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 1 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Front Headlamp aim beam image kick up to the offside masked |1.6| | 1 |
| Nearside Rear Axle swivel pins and bushes swivel pin and/or bush excessively worn (5.1.2 (b) (i)) | 1 |
| Offside Rear Axle swivel pins and bushes swivel pin and/or bush excessively worn (5.1.2 (b) (i)) | 1 |
| Nearside Front Suspension arm ball joint dust cover no longer prevents the ingress of dirt (5.3.4 (b) (ii)) | 1 |
| Offside Front Steering rack gaiter missing or no longer prevents the ingress of dirt (2.1.3 (g) (ii)) | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Rear Rear spring fractured |2.4.A1b|i|| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Nearside front brake binding |3.7.B.1| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Offside Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Lower Front suspension has a fracture of a load bearing member or its supporting structure. |2.3.8| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| rear brake recording little or no effort |3.7.B.5a| | 1 |
| Offside Front Seat belt damaged sufficient to obstruct correct operation of the belt |5.2.2a| | 1 |
| Offside Front Headlamp not working on main beam |1.7.5a| | 1 |
| Service brake: efficiency below requirements |3.7.B.7| | 1 |
| Front Windscreen wiper not operating automatically when switched on |8.2.1b| | 1 |
| Steering column movement between the shaft and steering wheel |2.1.2b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Direction indicator flashing more than 120 times a minute |1.4.A.2g| | 1 |
| Offside Direction indicator flashing more than 120 times a minute |1.4.A.2g| | 1 |
| Offside Front Suspension arm attachment bracket/mounting corroded and its strength is seriously reduced |2.4.G.1| | 1 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 1 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Offside Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| front brake binding both |3.7.B.1| | 1 |
| Nearside Front Lower Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 1 |
| Offside Front Suspension arm attachment bracket/mounting fractured |2.4.G.1| | 1 |
| Nearside Inner Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Nearside Inner Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Offside Inner Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Offside Front front brake binding |3.7.B.1| | 1 |
| Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Centre Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 1 |
| Offside Rear Suspension component mounting prescribed area is inadequately repaired |2.4.A.3| | 1 |
| Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Riders seat insecure |6.2.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 1 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Nearside Front Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Fuel system component leaking |7.2.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Offside Front All position lamps not working |1.1.A.3b| | 1 |
| Nearside Rear All position lamps not working |1.1.A.3b| | 1 |
| Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Brake locking device insecure rear brake slave cylinder |3.2.A1e| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Nearside Front position lamp|s| missing |1.1.A.3a| | 1 |
| Nearside Front Direction indicator missing |1.4.A.2b| | 1 |
| All position lamps not working |1.1.A.3b| | 1 |
| Nearside Headlamp not in good working order |not working| |1.2.4a| | 1 |
| Offside Headlamp not in good working order |not working| |1.2.4a| | 1 |
| Steering component is not secure to the vehicle structure |2.2.B.1a| | 1 |
| Nearside Track rod end loose |2.2.B.1d| | 1 |
| Offside Track rod end loose |2.2.B.1d| | 1 |
| Nearside Rear Indicator tell tale not functioning |1.5.2| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Offside Rear Direction indicators not working |1.4.A.2c| | 1 |
| Front Fuel hose leaking |7.2.3| | 1 |
| Front Position lamp switch faulty |1.1.4a| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |