| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 28 |
| Registration plate issues | 15 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Horn not working |1.7.3a| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Registration plate lamp issues | 2 |
| 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 Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Brake pedal mounting cracked . |3.1.2c| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Direction indicator flashing less than 60 times a minute with lights on |1.5.1c| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Brake hose damaged | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Centre Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front All position lamps adversely affected by the operation of the horn |1.1.3b| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Brake disc significantly and obviously worn excessive play in rivets (1.1.14 (a) (i)) | 1 |
| Offside Front Brake disc significantly and obviously worn excessive play in rivets (1.1.14 (a) (i)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Front Lower Brake hose excessively twisted |3.2.B3a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working Rear brake light switch wires had fallen off. (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Brake disc|s| insecure |3.2.A1g| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Front Steering lock stop missing |2.1.3| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Nearside Front Lower Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Nearside Front Upper Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Offside Rear Upper 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| | 1 |
| Nearside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Direction indicator obscured |1.5.1a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| An item not tested |Manual| | 1 |
| Offside Rear Motorcycle structure cracked |6.1.1a| | 1 |
| Offside Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose all four bolts loose |3.2.A1j| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up Collapsed (5.1.3 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear wheel bearings are excessively tight |2.4.A.2c| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |