| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 36 |
| Registration plate issues | 29 |
| Headlamp aim out of alignment | 21 |
| Horn not working |1.7.3a| | 10 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Rear Brake disc|s| cracked |3.2.A1g| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Offside Rear Footrest missing |6.2.1a| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Brake hose excessively deteriorated | 3 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Central Rear Suspension arm attachment bracket/mounting fractured shock mount (5.3.3 (b) (ii)) | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front suspension assembly component missing |2.3.1| | 1 |
| Offside Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake pedal so insecure that the brake cannot be readily applied (1.1.2 (e) (ii)) | 1 |
| Offside Footrest insecure (6.2.12 (a)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Central Rear Lower Rear suspension component cracked |2.4.A.1a| | 1 |
| Fuel system component leaking Left hand carb flooding |7.2.1a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Inner Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Centre Front Riders seat insecure |6.2.1a| | 1 |
| Nearside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Offside Front Brake hose leaking fluid |3.2.B4| | 1 |
| Centre Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Central Front Steering headbearing has excessive wear or free play Excessive free play (2.2.2 (f) (i)) | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Footrest missing BOTH |6.2.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Front All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Nearside Rear All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Front All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Rear All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |