| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Footrest insecure |6.2.1a| | 2 |
| Nearside Indicator tell tale not functioning |1.5.2| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Stop lamp damaged and function impaired |1.3.3a| | 2 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Exhaust silencer insecure |8.1.1 |b| |i|| | 1 |
| Offside Front Throttle operating incorrectly throttle sticking |6.2.1f| | 1 |
| Nearside Indicator switch defective |1.5.4| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Lower Brake locking device missing |3.2.A1e| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Headlamp not working on dipped beam Front bulb replaced. (4.1.1 (a) (ii)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Central Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| All direction indicators not working not flashing when bike is at idle. only flash when revs are increased. (4.4.1 (a) (ii)) | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Rear Suspension component pin or bush excessively worn swingarm to frame attachment (5.3.4 (a) (i)) | 1 |
| Registration plate issues | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Handlebar so insecure it is likely to become detached (2.2.1 (b) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 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 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Footrest insecure boltmissing (6.2.12 (a)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Rear suspension component excessively corroded. swing arm |2.4.A.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride nuts |6.2.1h| | 1 |
| Rear position lamp incorrect colour holed lens |1.1.2b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Offside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Wheel spindle loose |5.2.1 |c| |i|| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp not working lever |4.3.1 |a| |ii|| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |