| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 24 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Registration plate issues | 10 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Horn not working |1.7.3a| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Drive chain fouling another component |6.2.1d| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Offside Rear Brake disc|s| excessively pitted |3.2.A1l| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Brake hose damaged | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Front Braking system does not have an approriate system/s fitted according to its age |3.1.1| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Offside Front Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Fuel system component leaking |6.1.3 |b| |i|| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Centre Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Exhaust mounting missing |7.1.1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 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 Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Centre Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Front Front position lamp missing |1.1.1a| | 1 |
| Nearside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Centre Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Handlebar deformed |2.1.1b| | 1 |
| Brake hose excessively deteriorated | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Upper Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Centre Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake rod insecure (1.1.15 (c)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Nearside Fuel hose damaged Fuel hose from fuel tank to carbs split. (6.1.3 (c) (ii)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |