| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 38 |
| Rear reflector on motorcycle missing |1.4.1| | 34 |
| Registration plate issues | 24 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 13 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Front wheel bearings have excessive free play |2.3.5b| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 11 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 10 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Horn not working |1.7.3a| | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Rear Footrest missing |6.2.1a| | 5 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front Footrest insecure |6.2.1a| | 4 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| 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| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Brake pedal attachment screws loose |3.1.2b| | 1 |
| Brake fluid reservoir insecurely mounted Rear brake reservoir insecure |3.2.B1a| | 1 |
| Offside Front Throttle operating incorrectly Throttle sticking |6.2.1f| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Offside Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Centre Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Inner Rear Footrest missing |6.2.1a| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Drive chain worn to excess |6.2.1e| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Brake caliper insecure (1.1.16 (c) (i)) | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Inner Front Lower Brake cylinder severely corroded |3.2.B1b| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Front Upper Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Front Upper Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Offside Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Centre Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Offside Rear 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 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Front Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Offside Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock on clock assembly (2.1.4 (b)) | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Footrest missing Both |6.2.1a| | 1 |
| Rear Brake component leaking fluid |3.2.B4| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Offside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front |1.3.1a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Headlamp insecure |1.2.3b| | 1 |
| Front Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Front Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Centre Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Stop lamp does not illuminate immediately a brake applies via rear brake |1.3.1a| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Steering lock stop ineffective on right hand lock. |2.1.3| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Offside Front 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 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |