| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 30 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 17 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 15 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 11 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Front wheel bearings are excessively rough |2.3.5b| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 7 |
| Registration plate issues | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Horn not working |1.7.3a| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Seat insecure |6.2.1a| | 3 |
| Fuel system component insecure |7.2.1b| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 2 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Nearside Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Front Brake lever pivots excessively worn |3.1.3a| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 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 |
| Direction indicator missing |1.5.1a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Chain guard insecure |6.2.1c| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Nearside Front Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Nearside Front Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Centre Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Centre Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Steering lock stop missing |2.1.3| | 1 |
| Nearside Front Front suspension assembly component loose |2.3.1| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Fork yoke deformed |2.1.1b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Footrest insecure |6.2.12 |a|| | 1 |
| Stop lamp not working hand control |4.3.1 |a| |ii|| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised head bearings |2.2.1b| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride engine mount locking nut |6.2.1h| | 1 |
| Motorcycle structure adversely modified front footpeg mounting |6.1.1b| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Headlamp aim projected beam image obviously incorrect Kick up to the right (4.1.2 (c)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Registration plate lamp issues | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Brake component has an inadequate repair |3.1.5| | 1 |
| Offside Exhaust mounting missing |7.1.1c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Stop lamp not working on any controls (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on main beam appears to be incorrectly wired to dipped beam circuit (4.1.1 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected revs rise and fall on lock to lock (6.2.7 (a) (ii)) | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |