| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 64 |
| Headlamp aim out of alignment | 45 |
| Registration plate issues | 30 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 13 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Horn not working |1.7.3a| | 10 |
| Nearside Front Footrest insecure |6.2.1a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Nearside Front Direction indicator not working |1.5.1c| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 8 |
| Offside Front Footrest insecure |6.2.1a| | 7 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| 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| | 6 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Offside Footrest insecure |6.2.1a| | 4 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 4 |
| Brake hose excessively deteriorated | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 3 |
| Front Brake disc|s| insecure |3.2.A1g| | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Nearside Footrest insecure |6.2.1a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Footrest insecure |6.2.1a| | 2 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Brake hose fouling |3.2.B3b| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Front Direction indicator obscured |1.5.1a| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front Headlamp aim not tested |1.6| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Front Brake lever insecure |3.1.2a| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Brake pipe excessively corroded | 1 |
| Brake component is fractured |3.1.5| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Steering damper ineffective |2.1.2d| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Upper Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Brake pipe inadequately supported |3.2.B2b| | 1 |
| Nearside Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Nearside Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Nearside Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Upper Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Centre Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Offside Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| All direction indicators missing (4.4.1 (a) (ii)) | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Brake lever excessively damaged |3.2.A1c| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Nearside Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Brake pedal cracked |3.1.2c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Fuel system component leaking Fuel tap |7.2.1a| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Headlamp aim not tested |1.6| | 1 |
| Offside Headlamp aim not tested |1.6| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Headlamp insecure front fairing and fixtures (4.1.1 (c)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Offside Front Throttle operating incorrectly throttle does not snap close on release |6.2.1f| | 1 |
| Centre Front Lower Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Centre Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Rear Upper Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |