| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Registration plate issues | 16 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Throttle operating incorrectly |6.2.1f| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Brake hose excessively deteriorated | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Brake hose damaged | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 2 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Brake cylinder severely corroded |3.2.B1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Brake master cylinder insecure |1.1.10 |c|| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Front Lower Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Lower Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Drive chain fouling another component |6.2.1d| | 1 |
| Offside Rear Upper Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| An item not tested |Manual| | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front Front shock absorber seal failed and leaking oil both front fork seals leaking |2.3.3| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front mudguard can easily contact the wheel |2.3.7| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Centre Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Centre Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Sidecar front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Footrest insecure C clip missing. |6.2.1a| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Position lamp switch insecure |1.1.4b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| 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 Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Stand insecure |6.2.1h| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Offside Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Horn not working |1.7.3a| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Registration plate lamp issues | 1 |
| Offside Rear Upper All direction indicators incorrect colour (4.4.3 (a)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Centre Front All position lamps do not illuminate immediately when switched on (1.1.3a) | 1 |
| Centre Rear All position lamps do not illuminate immediately when switched on (1.1.3a) | 1 |
| Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Exhaust is leaking and excessively noisey (7.1.1b) | 1 |
| Front Exhaust is leaking and excessively noisey (7.1.1b) | 1 |
| Front Brake disc(s) excessively worn (3.2.A1l) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Front Motorcycle structure joining/attachment plate or fastening insecure handlebar (6.1.1 (b) (i)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Valve stem seriously damaged cut in valve stem rubber (5.2.3 (j)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Rear Brake caliper leaking and braking performance affected (1.1.16 (b) (ii)) | 1 |
| Rear Brake caliper damaged (1.1.16 (a) (i)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Stop lamp not working when pedal operated (4.3.1 (a) (ii)) | 1 |
| Front Brake caliper leaking both calipers (1.1.16 (b) (i)) | 1 |
| Fuel cap leaking leaking from around key hole area (6.1.3 (b) (i)) | 1 |
| Throttle operating incorrectly sticking on (6.2.7 (a) (i)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |