| Most common failures | No# failures |
|---|
| Registration plate issues | 55 |
| Headlamp aim out of alignment | 51 |
| Rear reflector on motorcycle missing |1.4.1| | 35 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 21 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 13 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 10 |
| Horn not working |1.7.3a| | 10 |
| 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| | 8 |
| Front wheel bearings are excessively rough |2.3.5b| | 8 |
| Offside Rear Direction indicator not working |1.5.1c| | 7 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Throttle operating incorrectly |6.2.1f| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Offside Front Direction indicator not working |1.5.1c| | 5 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Nearside Rear Direction indicators not working |1.5.1c| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Offside Footrest insecure |6.2.1a| | 4 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Offside Front Footrest insecure |6.2.1a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Registration plate lamp issues | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear 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 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Front Direction indicator insecure |1.5.3b| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Footrest insecure |6.2.1a| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Brake pipe excessively corroded | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Brake locking device missing "r" clips missing from rear brake caliper |3.2.A1e| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Lower Fuel system component leaking |7.2.1a| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Motorcycle structure cracked |6.1.1a| | 1 |
| Offside Motorcycle structure cracked |6.1.1a| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Brake hose excessively deteriorated | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Nearside Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear wheel spindle securing nut locking device missing split pin |2.4.A.2b| | 1 |
| Centre Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake component has an inadequate repair |3.1.5| | 1 |
| Rear Brake component has an inadequate repair |3.1.5| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Exhaust is leaking and excessively noisey Exhaust blow from front pipe area |7.1.1b| | 1 |
| Front shock absorber seal failed and leaking oil Fork seal leaking, OS running onto brake caliper |2.3.3| | 1 |
| Drive chain sprocket carrier worn to excess Excess movement in Cush drive |6.2.1e| | 1 |
| Roller brake test indicates a binding brake Front brakes binding |3.3.A1a| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Front Brake master cylinder defective but brake still operating |1.1.10 |b| |i|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Headlamp insecure |1.2.3b| | 1 |
| Offside Headlamp insecure |1.2.3b| | 1 |
| Nearside Headlamp aim not tested |1.6| | 1 |
| Offside Headlamp aim not tested |1.6| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Inner Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Fuel system component leaking |7.2.1a| | 1 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Nearside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Offside Front Lower Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Clutch lever positioned so it cannot be readily operated. lock nut missing |6.2.1g| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Centre Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Nearside Front position lamp missing |1.1.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear 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 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 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 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| An item not tested |Manual| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Upper Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Centre Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Centre Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease both |3.2.A1k| | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Steering headbearing has excessive wear or free play free play (2.2.2 (f) (i)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Nearside Front Direction indicator incorrect colour lens missing (4.4.3 (a)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Handlebar restricted in free movement from lock to lock bars trap riders hands on full lock (2.1.4 (c)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls lever does not work (4.3.2 (a) (iii)) | 1 |