| Most common failures | No# failures |
|---|
| Registration plate issues | 34 |
| Headlamp aim out of alignment | 31 |
| Front wheel bearings have excessive free play |2.3.5b| | 20 |
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Horn not working |1.7.3a| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Front wheel bearings are excessively rough |2.3.5b| | 11 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Registration plate lamp issues | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Riders seat insecure |6.2.1a| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| 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| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 4 |
| Drive chain worn to excess |6.2.1e| | 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 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Offside Front shock absorber seal failed and leaking oil (2.3.3) | 2 |
| Rear Brake performance not tested |3.3| | 1 |
| Nearside Outer Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Central Front Upper Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Front Brake hose excessively twisted Not secured in mounting and trapped between for leg and mudguard |1.1.12 |b| |ii|| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Steering damper insecure |2.1.2d| | 1 |
| Front Steering linkage ball joint has excessive play (2.1.3 (b) (i)) | 1 |
| Front Wheel hub excessively worn (5.2.1 (b) (i)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Wheel bearing play so excessive that directional control is impaired |5.1.3 |a| |ii|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies Control 2 not activating stop lamp |1.3.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock right hand lock |2.1.4| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Offside Rear Wheel spindle locking device ineffective locking nut (5.2.1 (d)) | 1 |
| Suspension arm mounting has an unsafe modification oxygen sensor fouling rear suspension arm (5.3.3 (c) (i)) | 1 |
| Nearside Rear wheel bearings have excessive free play sprocket housing |2.4.A.2c| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Fork yoke insecure |2.2.2 |d| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| All direction indicators incorrect colour (4.4.3 (a)) | 1 |
| Footrest insecure circlip missing from pivot pin |6.2.1a| | 1 |
| Rear Wheel spindle loose |5.2.1 |c| |i|| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Brake fluid contaminated (1.8 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake pedal pivots excessively worn brake cyclinder to pedal pivot insecure |3.1.3a| | 1 |
| Central Rear Lower All direction indicators obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp indicator |1.1.3b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Direction indicators flashing more than 120 times per minute all |1.5.1c| | 1 |
| Throttle operating incorrectly throttle sticking (6.2.7 (a) (i)) | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 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 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear position lamp adversely affected by the operation of another lamp by rear indicators |1.1.3b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Brake locking device missing brake torque arm has a none locking nut on the front mount bolt |3.2.A1e| | 1 |
| Stop lamp does not illuminate immediately a brake applies when the rear brake is applied |1.3.1a| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Stop lamp does not emit a steady light on foot control |1.3.1b| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Offside Front Brake hose excessively twisted (1.1.12 (b) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Nearside Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Footrest insecure (6.2.12 (a)) | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Horn not working |1.7.3a| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Stop lamp does not illuminate immediately a brake applies With rear brake |1.3.1a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Offside Rear Brake component is fractured |3.1.5| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front wheel bearings are excessively rough (2.3.5b) | 1 |
| Horn not working (1.7.3a) | 1 |
| Front Roller brake test indicates a binding brake (3.3.A1a) | 1 |
| Rear Hydraulic brake control feels spongy (3.1.4a) | 1 |
| Rear Brake pedal has inadequate reserve travel (3.1.3b) | 1 |
| Brake lever cannot be applied smoothly (3.1.3d) | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |