| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 39 |
| Registration plate issues | 38 |
| Headlamp aim out of alignment | 25 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 13 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 10 |
| Horn not working |1.7.3a| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| 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| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear position lamp incorrect colour |1.1.2b| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Horn missing |1.7.1| | 2 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Drive chain fouling another component |6.2.1d| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Exhaust mounting missing |7.1.1c| | 1 |
| Rear Fuel system component leaking |7.2.1a| | 1 |
| Rear reflector on motorcycle dirty and function impaired |1.4.2a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Front Stop lamp insecure |1.3.3b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Drive chain horseshoe locking device likely to become detached |6.1.7 |j| |ii|| | 1 |
| Offside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Outer Front Upper Horn not working |1.7.3a| | 1 |
| Centre Rear Lower Wheel spoke excessively loose |4.2.1b| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Front Upper Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Rear Upper Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Brake hose connection leaking |1.1.12 |c|| | 1 |
| Stop lamp does not illuminate immediately a brake applies on both levers |1.3.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Centre Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Rear spring fractured |2.4.A1b|i|| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Steering lock stop loose |2.1.3| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear suspension component cracked |2.4.A.1a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Wheel corroded significantly reducing the original strength |4.2.1a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Lower Suspension component pin or bush excessively worn Shock to swingarm |5.3.4 |a| |i|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Rear reflector defective or damaged by more than 50% of the reflecting surface (4.8.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |