| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Horn not working |1.7.3a| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Rear reflector on motorcycle missing |1.4.1| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Registration plate issues | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Offside Handlebar deformed |2.1.1b| | 2 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Brake hose damaged | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Brake excessively binding worse when rotated backwards |1.2.1 |f|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 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 |
| Rear Shock absorber has negligible damping effect suspension component seized poss swingarm |5.3.2 |b|| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Brake component modification unsafe Brake carrier rubbing on disc (1.1.21 (d) (i)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Floor brake test indicates a sticking brake (3.3.C2c) | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Nearside Rear Upper Direction indicator insecure |1.5.3b| | 1 |
| Inner Rear Lower Rear wheel insecure |4.2.3b| | 1 |
| Inner Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Direction indicators flashing more than 120 times per minute All |1.5.1c| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Front 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 (4.1.2 (a)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Brake caliper operating mechanism has excessive travel (1.1.16 (e) (i)) | 1 |
| Front Brake caliper has no reserve travel and braking performance affected (1.1.16 (e) (ii)) | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Rear Brake caliper insecure |1.1.16 |c| |i|| | 1 |
| Offside Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Nearside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Fairings insecure and likely to impede the steering front brake master cylinder |2.1.2e| | 1 |
| Nearside Indicator tell tale not operating correctly |1.5.2| | 1 |
| Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Front Footrest insecure nearside & offside pillion footrests insecure |6.2.1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Steering control handlebar movement restricted by trapped cables Throttle Fails On Fairing On Full r/h Lock |2.1.2c| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 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 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| An item not tested |Manual| | 1 |
| Rear An item not tested |Manual| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Outer Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |