| Most common failures | No# failures |
|---|
| Registration plate issues | 94 |
| Headlamp aim out of alignment | 79 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 62 |
| Headlamp aim beam image kick up to the offside |1.6| | 39 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 34 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 28 |
| Registration plate lamp issues | 15 |
| Horn not working |1.7.3a| | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 13 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 13 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| 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| | 12 |
| Stop lamp remains on when the brake is released |1.3.1e| | 9 |
| Nearside Front Direction indicator not working |1.5.1c| | 9 |
| Front wheel bearings are excessively rough |2.3.5b| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 8 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Stop lamp remains on when the brakes are released | 6 |
| Nearside Rear Footrest missing |6.2.1a| | 6 |
| Offside Rear Footrest missing |6.2.1a| | 6 |
| Offside Front Direction indicator not working |1.5.1c| | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Nearside Rear Direction indicator not working |1.5.1c| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 4 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 4 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 4 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Brake disc|s| insecure |3.2.A1g| | 3 |
| Rear Footrest missing |6.2.1a| | 3 |
| 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|| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Offside Rear Footrest missing (6.2.12 (a)) | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Centre Front Horn not working |1.7.3a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 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 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Drive chain fouling another component |6.2.1d| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Indicator tell tale not functioning |1.5.2| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 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 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Brake locking device missing |3.2.A1e| | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |