| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 60 |
| Registration plate issues | 49 |
| Headlamp aim out of alignment | 18 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Registration plate lamp issues | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Horn not working |1.7.3a| | 6 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| 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| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front Direction indicator missing |1.5.1a| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Rear Brake pedal mounting cracked . |3.1.2c| | 2 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Offside Rear Direction indicator missing |1.5.1a| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Gradient brake test indicates a severely juddering brake |3.3.D1d| | 1 |
| Gradient brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.D1b| | 1 |
| Front Brake fluid not visible |1.1.10 |d| |iii|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain link |6.2.1h| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 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 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| An item not tested |Manual| | 1 |
| Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies foot brake |1.3.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Offside Front Brake lever is inoperative |3.1.3c| | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Brake component is fractured |3.1.5| | 1 |
| Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Central Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Central Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Central Rear Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake component is fractured |3.1.5| | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Indicator switch inoperative |4.4.2 |a| |ii|| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front position lamp incorrect colour both lamps green |1.1.2a| | 1 |
| Steering control handlebar movement restricted by trapped cables on right lock |2.1.2c| | 1 |
| Footrest missing nearside pillion foot rest |6.2.1a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Front Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Direction indicators affected by the operation of another lamp Rear |1.5.1c| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake lever excessively damaged |3.2.A1c| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Brake pedal mounting cracked . |3.1.2c| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Rear All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected Split pin (5.2.1 (c) (ii)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Upper Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Central Front Horn not working (7.7 (a) (ii)) | 1 |
| Central Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Central Front Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Nearside Front Lower Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |