| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 46 |
| Rear reflector on motorcycle missing |1.4.1| | 20 |
| Headlamp aim beam image kick up to the offside |1.6| | 16 |
| Registration plate issues | 14 |
| Horn not working |1.7.3a| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 5 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake disc|s| cracked |3.2.A1g| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| 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 Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Headlamp aim beam image kick up to the offside (1.6) | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Nearside Rear Lower Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside 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 |
| Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Offside Lower Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Horn not working |1.7.3a| | 1 |
| Offside Front Horn not working |1.7.3a| | 1 |
| Central Shock absorber has an excessively worn bush |5.3.2 |c|| | 1 |
| Nearside Footrest insecure (6.2.12 (a)) | 1 |
| Nearside Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced |6.1.1 |c| |i|| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Brake disc significantly and obviously worn rear disc |1.1.14 |a| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Offside Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Lower Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Stop lamp not working front control (4.3.1 (a) (ii)) | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Steering headbearing has excessive free play (2.2.2) | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Central Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Footrest insecure both |6.2.1a| | 1 |
| Offside Footrest missing |6.2.1a| | 1 |
| Rear suspension bearing has excessive free play upper linkage |2.4.A2a|i|| | 1 |
| Brake fluid reservoir leaking hydraulic fluid pipe to master cylinder |3.2.B1e| | 1 |
| Front Roller brake test indicates a binding brake starting to bind |3.3.A1a| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Brake hose excessively deteriorated | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Fuel tank leaking (6.1.3 (b) (i)) | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear suspension bearing has excessive free play swinging arm. |2.4.A2a|i|| | 1 |
| Rear suspension bearing has excessive free play bottom shock. |2.4.A2a|i|| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride (6.2.1h) | 1 |
| Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 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 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp not working When position lamp is illuminated (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working When position lamp is illuminated (4.3.1 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Gear select pedal insecure |6.2.1h| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Horn sound not in accordance with requirements harsh tones (7.7 (c)) | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Central Front Horn control not functioning. |1.7.2b| | 1 |
| Central Front Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Headlamp lens seriously defective (4.1.1 (b) (ii)) | 1 |
| Rear Rear wheel spindle securing nut locking device missing Wheel spindle split pin missing, new pin fitted |2.4.A.2b| | 1 |
| Front Headlamp aim beam image kick up to the offside Tape fitted to headlamp to rectify offside beam kick up. |1.6| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Footrest insecure off-side pillion footrest |6.2.1a| | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Fuel pipe leaking (6.1.3 (b) (i)) | 1 |
| Nearside Rear Direction indicators not working (1.5.1c) | 1 |
| Drive chain excessively loose (6.2.1d) | 1 |
| Brake disc fractured REAR |1.1.14 |a| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear |1.3.1a| | 1 |
| Offside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Rear Brake back plate insecure Brake plate locking device missing - fitted new split pin (1.1.14 (d)) | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Central Rear Rear reflector missing Reflector Fitted (4.8.2 (a) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar Re Glued (2.2.1 (d) (ii)) | 1 |
| Offside Front Handlebar grip insecure to handlebar Re Glued (2.2.1 (d) (ii)) | 1 |
| Nearside Rear Drive chain horseshoe locking device incorrectly fitted Clip turned round correct way (6.1.7 (j) (i)) | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Horn sound not in accordance with requirements effected by the operation of other lights (7.7 (c)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Indicator switch defective |1.5.4| | 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 Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Central Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Front Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Gradient brake test indicates a severely juddering brake |3.3.D1d| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 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 |