| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 89 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 33 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 19 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 18 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 12 |
| Registration plate issues | 12 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Registration plate lamp issues | 7 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 7 |
| Riders seat insecure |6.2.1a| | 7 |
| Horn not working |1.7.3a| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 5 |
| Handlebar mounting clamp loose |2.1.1a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Headlamp insecure |1.2.3b| | 4 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Offside Steering lock stop ineffective |2.1.3| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Fuel cap sealing washer missing |7.2.2c| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| 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| | 2 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Brake cylinder leaking hydraulic fluid Front |3.2.B1e| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Stop lamp not working Front brake |4.3.1 |a| |ii|| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake lagging in operation not releasing straight away. (1.2.1 (d)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Motorcycle structure excessively damaged handlebar lower cover |6.1.1a| | 1 |
| Motorcycle structure excessively damaged front forks chrome covers |both sides| |6.1.1a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Rear wheel rotation likely to be impeded Mud guard contacting rear wheel |6.2.1b| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Front Brake lever is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Nearside Lower Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Nearside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Brake fluid contaminated |1.8 |a|| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Direction indicators affected by the operation of another lamp all |1.5.1c| | 1 |
| Centre Rear Fuel cap sealing washer missing |7.2.2c| | 1 |
| Rear Exhaust silencer likely to become detached |8.1.1 |b| |ii|| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Rear Lower Brake component has restricted free movement and operation is likely to be impeded Cable touching wheel |3.2.A1h| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front Brake Lever |1.3.1a| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Handlebar so insecure it is likely to become detached Mounting bolts loose (2.2.1 (b) (ii)) | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Exhaust has a major leak of exhaust gases rotting through (6.1.2 (a)) | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Engine mounting/bracket damaged or deteriorated resulting in excessive movement (6.1.8 (a) (i)) | 1 |
| Nearside Rear Stop lamp missing |1.3.3a| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Fuel cap missing |7.2.2a| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Fuel cap ineffective fuel cap seal missing (6.1.3 (b) (i)) | 1 |
| Suspension component pin or bush excessively worn rear suspension bearings (5.3.4 (a) (i)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen incorrect pattern (4.1.2 (a)) | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies from rear control |1.3.1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Exhaust system insecure BOLTS MISSING |6.1.2 |a|| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Central Rear Position lamp light intensity significantly reduced Replaced 24v bulb with correct bulb (4.2.3 (a) (ii)) | 1 |
| Central Rear Stop lamp light intensity significantly reduced Replaced 24v bulb with correct bulb (4.3.3 (a) (ii)) | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Pillion seat insecure (6.2.6 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working when rear brake is applied (4.3.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Direction indicators not working all |1.5.1c| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |