| Most common failures | No# failures |
|---|
| Drive chain excessively loose |6.2.1d| | 8 |
| Headlamp aim out of alignment | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Registration plate issues | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| An item not tested |Manual| | 1 |
| Brake performance not tested |3.3| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Offside Front Brake master cylinder defective but brake still operating level window missing (1.1.10 (b) (i)) | 1 |
| Nearside Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Rear Drive chain sprocket so loose it is likely to fail nuts working loose behind locktabs (6.1.7 (c) (ii)) | 1 |
| Exhaust mounting does not fully support the exhaust system (7.1.1.c) | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort (3.3.A1d) | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Suspension arm corroded and seriously weakened (5.3.3 (b) (i)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Centre Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Centre Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Exhaust excessively deteriorated lower rear silencer has heavy corrosion and holes |7.1.1a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Offside Front Lower Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Inner Front Lower Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front All direction indicators obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |