| Most common failures | No# failures |
|---|
| Registration plate issues | 40 |
| Headlamp aim out of alignment | 38 |
| Rear reflector on motorcycle missing |1.4.1| | 36 |
| Horn not working |1.7.3a| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| 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 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Nearside Front Direction indicators not working |1.5.1c| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Offside Front Direction indicators not working |1.5.1c| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Indicator tell tale not functioning |1.5.2| | 3 |
| Nearside Front Direction indicator insecure |1.5.3b| | 3 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Nearside Direction indicator missing |1.5.1a| | 2 |
| Offside Direction indicator missing |1.5.1a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 2 |
| Offside Footrest insecure |6.2.1a| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Front Brake hose leaking fluid |3.2.B4| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Lower Front suspension assembly component missing Fork clamp bolt in yoke |2.3.1| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride chain spring link wrong way around |6.2.1h| | 1 |
| Rear Hydraulic brake control feels spongy failed brake test |3.1.4a| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Offside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Rear reflector on sidecar does not face squarely to the rear |1.4.1| | 1 |
| Nearside Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Offside Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Inner Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake has no recorded effort at a wheel |1.2.1 |a| |ii|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Centre Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Brake disc|s| insecure both front discs |3.2.A1g| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Centre Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| 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 |
| Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Front Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Headlamp light intensity severely reduced DIP & MAIN BEAM (4.1.4 (a)) | 1 |
| Front Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies with rear brake |1.3.1a| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front position lamp incorrect colour x2 |1.1.2a| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Fork yoke deformed |2.1.1b| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Brake component is excessively corroded |3.1.5| | 1 |
| Brake performance not tested |3.3| | 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 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on high beam does not illuminate wen the switch is pressed |1.1.3a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Lower Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Chain guard insecure hugger |6.1.7 |i|| | 1 |
| Rear Brake rod insecure |1.1.15 |c|| | 1 |
| Offside Rear Lower Roller brake test indicates a binding brake rear calliper binding |3.3.A1a| | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 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 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Fuel hose leaking (6.1.3 (b) (i)) | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Central Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Central Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Rear Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Shock absorber has a serious fluid leak replace seal (5.3.2 (b)) | 1 |
| Nearside Rear suspension has a fracture of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |