| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 39 |
| Registration plate issues | 27 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 22 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 22 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Horn not working |1.7.3a| | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Fuel system component leaking |7.2.1a| | 4 |
| Front Footrest insecure |6.2.1a| | 4 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 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 Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 3 |
| Rear position lamp damaged and function impaired |1.1.1b| | 3 |
| Rear Wheel spoke missing |4.2.1b| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 2 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Wheel spoke cracked. |4.2.1b| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Horn missing |1.7.1| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Brake pedal insecure |3.1.2a| | 2 |
| Offside Front Lower Footrest insecure |6.2.1a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Brake lever has inadequate reserve travel adjusted cable |3.1.3b| | 1 |
| Front Stop lamp remains on when the brake is released switch sticky |1.3.1e| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired |5.1.3 |a| |ii|| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Nearside Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Offside Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Wheel fixing missing |single fixing| |5.2.1 |a| |ii|| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Offside Rear Shock absorber likely to become detached |5.3.2 |a| |ii|| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Headlamp aim not tested unable to run engine or lights |1.6| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Direction indicator not working all |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies all |1.3.1a| | 1 |
| Footrest insecure both rider`s |6.2.1a| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Wheel spoke excessively loose REAR X 3 |4.2.1b| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Rear Brake drum|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Central Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on side light |1.1.3a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Central Front Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Headlamp dipped beam affected by the operation of another lamp Main Beam on constantly |1.2.2c| | 1 |
| Front Headlamp deteriorated and function impaired Main Beam Illumination very dim |1.2.3a| | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Pillion seat insecure |6.2.6 |a| |ii|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Front Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Fuel system component insecure |7.2.1b| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Footrest insecure |6.2.12 |a|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain link |6.2.1h| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Front Brake lever mounting cracked |3.1.2c| | 1 |
| Direction indicator not working n/s front and rear |1.5.1c| | 1 |
| Front Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Horn missing |1.7.1| | 1 |
| Offside Front Lower Brake rod excessively corroded |3.2.A1c| | 1 |
| Nearside Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Wheel spoke missing |4.2.1b| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear reflector on motorcycle missing replace |1.4.1| | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Headlamp light intensity severely reduced |4.1.4 |a|| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake |1.3.1a| | 1 |
| Fuel system component insecure tank |7.2.1b| | 1 |
| Nearside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Brake pedal attachment screws loose |3.1.2b| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Rear Wheel spoke missing (5.2.2 (d)) | 1 |
| Rear Drive chain sprocket worn to excess (6.2.1e) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 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 |
| Rear reflector on motorcycle deteriorated and function impaired (1.4.2a) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 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 |
| Nearside Steering lock stop missing (2.1.3) | 1 |
| Offside Steering lock stop maladjusted (2.1.3) | 1 |
| Front wheel spindle loose (2.3.5a) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Fuel system component leaking Carb (6.1.3 (b) (i)) | 1 |
| Offside Front Direction indicator not working bulb fitted (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake rod insecure (1.1.15 (c)) | 1 |
| Rear Brake rod insecure (1.1.15 (c)) | 1 |
| Front Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected Spindle clamp damaged and incorrectly fitted (5.2.1 (c) (ii)) | 1 |
| Headlamp lens missing (4.1.1 (b) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Fuel system component leaking carburetor (6.1.3 (b) (i)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working with the application of the front brake (4.3.1 (a) (ii)) | 1 |
| Offside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Position lamp not working front side light not working (4.2.1 (a)) | 1 |
| Central Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Stop lamp not working mechanism not pulling switch on (4.3.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| All direction indicators obviously incorrectly positioned no indicators on sidecar (4.4.3 (a)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |