| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 71 |
| Registration plate issues | 56 |
| Rear reflector on motorcycle missing |1.4.1| | 20 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| 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| | 18 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 16 |
| Headlamp aim beam image kick up to the offside |1.6| | 16 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Rear Wheel spoke excessively loose |4.2.1b| | 14 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 13 |
| Horn not working |1.7.3a| | 11 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Nearside Front Direction indicator not working |1.5.1c| | 6 |
| Front suspension has inadequate damping effect. |2.3.6c| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Seat insecure |6.2.1a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Riders seat insecure |6.2.1a| | 5 |
| Front Brake excessively binding |1.2.1 |f|| | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Registration plate lamp issues | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front Brake disc|s| cracked |3.2.A1g| | 4 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Wheel spoke excessively loose |4.2.1b| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake excessively binding |1.2.1 |f|| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Service brake: efficiency below requirements |3.7.B.7| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 3 |
| Rear Wheel spoke missing |4.2.1b| | 2 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Rear Wheel spoke cracked. |4.2.1b| | 2 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 2 |
| Rear parking brake recording little or no effort | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Rear Direction indicator not working |1.4.A.2c| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Rear 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| | 2 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 2 |
| Rear brake binding | 2 |
| 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|| | 2 |
| Front Headlamp switch faulty |1.2.4| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Offside Stop lamp not working |1.2.1b| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Position lamp switch does not operate in accordance with the requirements (4.2.2 (a)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Horn not working (7.7 (a)) | 2 |