| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Rear reflector on motorcycle missing |1.4.1| | 28 |
| Registration plate issues | 16 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Horn not working |1.7.3a| | 10 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Drive chain excessively tight |6.2.1d| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Direction indicators not working |1.5.1c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Footrest insecure |6.2.1a| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Front Horn not working |1.7.3a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Brake disc|s| insecure |3.2.A1g| | 2 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 2 |
| Motorcycle structure excessively damaged |6.1.1a| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Headlamp incorrect colour |1.2.1| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Rear Drive chain worn to excess |6.2.1e| | 2 |
| Brake hose damaged | 2 |
| Offside Rear Footrest missing |6.2.1a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear position lamp insecure |1.1.1c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Direction indicator obscured by number plate |1.5.1a| | 2 |
| Rear position lamp obscured more than 50% |1.1.1d| | 2 |
| Stop lamp obscured |1.3.1c| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Offside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| An item not tested |Manual| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Indicator switch defective |1.5.4| | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Outer Front Horn missing |1.7.1| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Front Headlamp missing |1.2.3a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Rear Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Brake hose excessively deteriorated | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Front Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Front Front suspension assembly has excessive free play in the pivot bearings. |2.3.2| | 1 |
| Rear Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Front Brake hose fouling |3.2.B3b| | 1 |
| Rear Brake caliper operating mechanism has excessive travel |1.1.16 |e| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Lower An item not tested |Manual| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Offside Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Centre Front Lower Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Centre Front Upper Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Centre Front Upper Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Front Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Centre Front Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Rear Upper Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Front Upper Throttle operating incorrectly |6.2.1f| | 1 |
| Centre Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Upper Throttle operating incorrectly |6.2.1f| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front suspension assembly has an insecure fork brace |2.3.4d| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Position lamp switch faulty |1.1.4a| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Direction indicator not working both o/s (4.4.1 (a) (ii)) | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Stop lamp showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Direction indicator not working both dont work (4.4.1 (a) (ii)) | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 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 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Lower Brake component is excessively corroded |3.1.5| | 1 |
| Offside Front Upper Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Offside Upper Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Lower Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Rear Brake pipe excessively damaged |3.2.B2a| | 1 |