| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 45 |
| Registration plate issues | 32 |
| 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| | 18 |
| Horn not working |1.7.3a| | 16 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Nearside Rear Direction indicators not working |1.5.1c| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Nearside Direction indicators not working |1.5.1c| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Offside Steering lock stop maladjusted |2.1.3| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Stop lamp not working front and rear |4.3.1 |a| |ii|| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Stop lamp not working Not working off front or rear brake control |4.3.1 |a| |ii|| | 1 |
| Registration plate lamp issues | 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 |
| Rear Wheel fixing missing |multiple fixings| Rear wheel spindle nut split pin missing |5.2.1 |a| |i|| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Nearside All position lamps not working |4.2.1 |a|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Sidecar rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Footrest insecure both front |6.2.12 |a|| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Sidecar front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Horn is not continous or uniform |1.7.3c| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Inner Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Offside Brake lever cracked |3.1.2c| | 1 |
| Offside Rear Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Stop lamp with a multiple light source more than 1/2 not functioning |4.3.1 |a| |ii|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Rear Wheel spindle loose |5.2.1 |c| |i|| | 1 |
| Drive chain excessively loose adjust |6.2.1d| | 1 |
| Horn missing re fitted |1.7.1| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Offside Fuel pipe leaking |7.2.1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Gradient brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.D1b| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Sidecar front position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Sidecar front position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Fuel cap leaking |6.1.3 |b| |i|| | 1 |
| Rear Wheel fixing loose |multiple fixings| |5.2.1 |a| |i|| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock brake hose |2.1.4 |b|| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Brake back plate|s| insecure |3.2.A1j| | 1 |
| Sidecar wheel insecure |4.2.3b| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Centre Rear Seat insecure passanger seat needed tightening. |6.2.1a| | 1 |
| Sidecar wheel bearings are excessively rough |5.2.3d| | 1 |
| Nearside Sidecar wheel bearings are excessively rough |5.2.3d| | 1 |
| Brake hose damaged | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Front Upper Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Front Upper Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Brake disc(s) has excessive run out (3.2.A1m) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Nearside Rear Direction indicator not working (1.5.1c) | 1 |
| Fuel system component leaking (7.2.1a) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear wheel spindle securing nut locking device missing (2.4.A.2b) | 1 |
| Front Brake lever has inadequate reserve travel (3.1.3b) | 1 |
| Nearside Fuel system component leaking Fuel leaking from around fuel tap bowl (6.1.3 (b) (i)) | 1 |
| Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Footrest insecure (6.2.12 (a)) | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Fuel pipe leaking (6.1.3 (b) (i)) | 1 |
| Rear Stop lamp lens defective such that the emitted light is adversely affected (4.3.1 (b) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working When using front brake control. (4.3.1 (a) (ii)) | 1 |
| Rear Brake component insecure (1.1.21 (c)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Brake component insecure Locking device missing (1.1.21 (c)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Fuel system component leaking leaking from carb (6.1.3 (b) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Shock absorber has an excessively worn bush Both rear (5.3.2 (c)) | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |