| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 36 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 21 |
| Drive chain excessively loose |6.2.1d| | 18 |
| Drive chain worn to excess |6.2.1e| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 12 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Registration plate issues | 10 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 9 |
| Headlamp aim beam image kick up to the offside |1.6| | 9 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Horn not working |1.7.3a| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Offside Rear Direction indicator insecure |1.5.3b| | 3 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain fouling another component |6.2.1d| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Chain guard insecure (6.1.7 (i)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Offside Lower Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Headlamp insecure does not hold in the correct postion |4.1.1 |c|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Wheel fixing missing |single fixing| Rear spindle locking pin |5.2.1 |a| |ii|| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced Rear mudguard insecure/damaged. Rear light assembly attached to mudguard. |6.1.1 |b| |ii|| | 1 |
| Riders seat insecure bolts loose |6.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride sprocket bolts loose |6.2.1h| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Forks modification unsafe no bracing for front forks (2.2.2 (e)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Motorcycle structure joining/attachment plate or fastening insecure wheel spindle locking device missing (6.1.1 (b) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Drive chain sprocket worn to excess cush rubbers (6.1.7 (c) (i)) | 1 |
| Floor brake test No brake control achieves an efficiency of 30% (1.2.2 (a) (i)) | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Rear Wheel fixing missing (single fixing) split pin (5.2.1 (a) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front Brake pipe likely to become detached or damaged (1.1.11 (d) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Fuel system component insecure tank |7.2.1b| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Wheel fixing missing (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Brake lever has insufficient reserve travel lever coming back to handlebar very easily (1.1.2 (a)) | 1 |
| Front Brake master cylinder leaking damp with brake fluid also has dried up brake fluid present (1.1.10 (b) (ii)) | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Front Brake lagging in operation |1.2.1 |d|| | 1 |
| Front Brake fluid contaminated |1.8 |a|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected excessivily tight and notchy (2.2.2 (f) (ii)) | 1 |
| Rear Direction indicator not working Both (left and right) (4.4.1 (a) (ii)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Front position lamp missing |1.1.1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Nearside Footrest missing pillion (6.2.12 (a)) | 1 |
| Offside Footrest missing pillion (6.2.12 (a)) | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Rear suspension component cracked |2.4.A.1a| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Stop lamp insecure |1.3.3b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Handlebar deformed |2.1.1b| | 1 |
| Centre Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Drive chain fouling another component catching on centre stand |stand bent | |6.2.1d| | 1 |
| Throttle operating incorrectly throttle does not return from fully open |6.2.1f| | 1 |
| Brake lever excessively damaged |3.2.A1c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake lining|s| contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Offside Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |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 Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Rear Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Shock absorber has a serious fluid leak both forks (5.3.2 (b)) | 1 |
| Front Suspension component has excessive wear or free play both forks chrome worn / pitted (5.3.3 (d)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering front forks misaligned / bent (2.4 (a)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Headlamp light intensity severely reduced reflector deteriorated (4.1.4 (a)) | 1 |
| Brake rod insecure rear torque arm insecure (1.1.15 (c)) | 1 |
| Rear Motorcycle structure has excessive corrosion which adversely affects braking or steering swinging arm corroded. |6.1.1 |c| |ii|| | 1 |
| Rear Roller brake test indicates a binding brake pivot |3.3.A1a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |