| Most common failures | No# failures |
|---|
| Drive chain excessively loose |6.2.1d| | 18 |
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Drive chain worn to excess |6.2.1e| | 8 |
| Headlamp aim out of alignment | 6 |
| Horn not working |1.7.3a| | 5 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 4 |
| Registration plate issues | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Offside Handlebar deformed |2.1.1b| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear reflector missing |4.8.2 |a| |ii|| | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 3 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Indicator switch insecure |1.5.4| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| 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| | 2 |
| Fuel cap sealing washer torn |7.2.2c| | 2 |
| Nearside Handlebar deformed |2.1.1b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 2 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Footrest missing (6.2.12 (a)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear Upper Suspension component pin or bush excessively worn (5.3.4 (a) (i)) | 2 |
| Pillion seat insecure seat cover (6.2.6 (a) (ii)) | 2 |
| Brake pedal is bent and the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear Drive chain sprocket carrier worn to excess Insecure |6.2.1e| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp not working front brake |4.3.1 |a| |ii|| | 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 |
| Direction indicators flashing less than 60 times a minute all |1.5.1c| | 1 |
| Throttle operating incorrectly Throttle sticking |6.2.1f| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Throttle operating incorrectly insecure |6.2.1f| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Nearside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing caliper carrier. |3.2.A1j| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies switch fault |1.3.1a| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Offside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Brake component is fractured rear pads |3.1.5| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake performance not tested |3.3| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Direction indicator obviously incorrectly positioned seperation below 180mm |4.4.3 |a|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Registration plate lamp issues | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Centre Rear Drive chain excessively loose |6.2.1d| | 1 |
| Centre Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Nearside Clutch lever positioned so it cannot be readily operated (6.2.7 (b)) | 1 |
| Nearside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Rear 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 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake pedal anti-slip provision missing (1.1.2 (c)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Front Headlamp insecure And inner fairing insecure (4.1.1 (c)) | 1 |
| Nearside Footrest insecure (6.2.12 (a)) | 1 |
| Throttle operating incorrectly Revs up on lock (6.2.7 (a) (i)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Nearside Handlebar restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock l/h bar hitting tank (2.1.4 (b)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock THUMB BRAKE LEVER SETUP FOULING AND PREVENTING FULL LOCK TO THE RIGHT (2.1.4 (a)) | 1 |
| Steering operation restricted in free movement from lock to lock THUMB BRAKE LEVER SETUP FOULING AND PREVENTING FULL LOCK TO THE RIGHT (2.1.4 (c)) | 1 |
| Rear Brake component modification adversely affecting braking performance REAR MASTER CYLINDER MOUNTING BRACKET FLEXES AND MOVES UNDER BRAKING FORCE (1.1.21 (d) (ii)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Nearside Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Central Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Front Lower Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |