| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 76 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 40 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 27 |
| Drive chain excessively loose |6.2.1d| | 25 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 25 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 25 |
| Offside Front Footrest insecure |6.2.1a| | 18 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Nearside Front Footrest insecure |6.2.1a| | 14 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 13 |
| Horn not working |1.7.3a| | 12 |
| 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|| | 11 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Drive chain worn to excess |6.2.1e| | 11 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 10 |
| Rear Brake excessively binding (1.2.1 (f)) | 10 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 8 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 8 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Registration plate issues | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Drive chain excessively tight |6.2.1d| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Rear Brake disc|s| cracked |3.2.A1g| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 4 |
| Nearside Footrest insecure |6.2.1a| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 4 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Rear Brake excessively binding |1.2.1 |f|| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Front Footrest insecure |6.2.12 |a|| | 3 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Offside Footrest insecure |6.2.1a| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front Direction indicator missing |1.5.1a| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Offside Rear Lower Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 2 |
| Nearside Headlamp aim headlamp damaged and function impaired |1.2.3a| | 2 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |