| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 44 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 29 |
| Registration plate issues | 22 |
| Registration plate lamp issues | 18 |
| Drive chain excessively loose |6.2.1d| | 17 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Headlamp insecure |1.2.3b| | 8 |
| Horn not working |1.7.3a| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Headlamp insecure |4.1.1 |c|| | 5 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Front Direction indicator not working |1.5.1c| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 3 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Horn control defective |1.7.2a| | 3 |
| Rear Direction indicator not working |1.5.1c| | 3 |
| Nearside 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 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 2 |
| Offside Rear Footrest missing |6.2.12 |a|| | 2 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Footrest insecure |6.2.1a| | 2 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Rear Footrest insecure Footrest mounting bracket missing a bolt (6.2.12 (a)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected Steering head bearings notchy. |2.2.2 |f| |ii|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Inner Footrest insecure |6.2.1a| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Drive chain sprocket excessively loose sprocket carrier bearing |6.1.7 |c| |i|| | 1 |
| Suspension attachment bracket/mounting insecure swinging arm spindle nut missing |5.3.3 |a| |i|| | 1 |
| Direction indicators not working all |1.5.1c| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 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 |
| Footrest missing BOTH rears (6.2.12 (a)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake pivot excessively worn (1.1.15 (b)) | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Footrest missing both rear foot rests missing. (6.2.12 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Footrest missing |6.2.12 |a|| | 1 |
| Footrest missing 2 rear |6.2.1a| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Brake pedal insecure secured by tightening |3.1.2a| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp light intensity significantly reduced (4.3.3 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Footrest missing anti-slips |6.2.1a| | 1 |
| Footrest missing |6.2.12 |a|| | 1 |
| Brake excessively binding |1.2.1 |f|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Footrest insecure Rubber insecure. (6.2.12 (a)) | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Stop lamp affected by the operation of another lamp #BATTERY# |1.3.2| | 1 |
| Horn is not a constant note #BATTERY# |1.7.3c| | 1 |
| Direction indicators affected by the operation of another lamp #BATTERY# |1.5.1c| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear Stop lamp showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Brake cylinder leaking (1.1.16 (b) (i)) | 1 |
| Front Handlebar restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Brake lining|s| less than 1.0 mm thick |1.1.13 |a|| | 1 |
| Motorcycle structure is so deformed it is likely to adversely affect braking or steering (6.1.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake caliper insecure |1.1.16 |c| |i|| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Riders seat with a defective supporting structure (6.2.5 (a) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted Extra spacers fitted to adjust (6.1.7 (j) (i)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 1 |
| Central Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Central Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Central Rear Footrest missing |6.2.12 |a|| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies loose connection fixed |1.3.1a| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Rear position lamp incorrect colour |1.1.2b| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Nearside Front Footrest missing missing rubber (6.2.12 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake rod insecure locking device missing (1.1.15 (c)) | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride chain clip fitted wrong way around |6.2.1h| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Front Wheel spoke cracked (5.2.2 (d)) | 1 |
| Front Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements Flat battery (7.7 (c)) | 1 |
| Offside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear shock absorber seal failed and leaking oil both sides |2.4.A.1c| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear position lamp insecure Rear main light |1.1.1c| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Offside Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Central Rear Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure mudguard |6.1.1 |b| |i|| | 1 |
| Nearside Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Stop lamp not working Both front and back stop lamp switches affected |4.3.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Rear Outer Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Nearside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| All direction indicators not working Battery needs replacing hence indicators not working |4.4.1 |a| |ii|| | 1 |
| Horn not working Battery needs replacing hence horn not working |7.7 |a| |ii|| | 1 |
| Front Stop lamp not working Battery needs replacing hence no front brake light |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working Battery needs replacing hence no rear brake light |4.3.1 |a| |ii|| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Direction indicators not working ALL |1.5.1c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket may be worn unable to examine |6.2.1h| | 1 |
| Drive chain horseshoe locking device incorrectly fitted |6.1.7 |j| |i|| | 1 |
| Rear Brake component insecure rear brake torque arm insecure . (1.1.21 (c)) | 1 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Direction indicator not working all |1.5.1c| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected |1.1.2 |b| |ii|| | 1 |