| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Registration plate issues | 6 |
| Horn not working |1.7.3a| | 6 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear Wheel spoke excessively loose |4.2.1b| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Nearside Direction indicator not working |1.5.1c| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Wheel corroded significantly reducing the original strength |4.2.1a| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 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 Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Wheel spoke excessively loose |5.2.2 |d|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Rear Lower Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Inner Front Lower Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Inner Rear Lower Drive chain excessively loose |6.2.1d| | 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 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Headlamp switch faulty |1.2.4| | 1 |
| Rear Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies when foot brake applied a rear brake light does not work. |1.3.1a| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Centre Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear switch |1.3.1a| | 1 |
| Exhaust mounting missing silencer bolt |7.1.1c| | 1 |
| Front Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Upper Rear mono-shock insecure |2.4.B.4| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Steering lock stop ineffective handguard fouling on fuel tank |2.1.3| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |Shock Absorber Needs Replacing| |2.4.A.3b| | 1 |
| Offside Rear Direction indicator incorrect colour |Has No Lens| |1.5.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort DISC WARPED |3.3.A1d| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Lower Wheel corroded significantly reducing the original strength (4.2.1a) | 1 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Central Rear Upper Stop lamp not working Front brake switch failed (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working control brake 2 (rear brake) (4.3.1 (a) (ii)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls lever (4.3.2 (a) (iii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock mirrors + brake lever bracket (2.1.4 (a)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Nearside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |