| Most common failures | No# failures |
|---|
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 25 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 25 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 24 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 21 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 19 |
| Registration plate issues | 17 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Horn not working |1.7.3a| | 14 |
| Steering headbearing has excessive free play |2.2.2| | 13 |
| Headlamp aim out of alignment | 13 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 12 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 10 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 8 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 8 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 5 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Headlamp aim not tested |1.6| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front Throttle operating incorrectly |6.2.1f| | 3 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake pedal insecure |3.1.2a| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake drum|s| securing bolt|s| loose |3.2.A1g| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Fuel cap sealing washer missing |7.2.2c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Headlamp main beam affected by the operation of the horn |1.2.2c| | 2 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Fuel cap missing |7.2.2a| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Brake pedal insecure |1.1.2 |e| |i|| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Nearside Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Brake locking device missing front lower lever |3.2.A1e| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Centre Rear Riders seat insecure |6.2.1a| | 1 |
| Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Rear Lower Brake locking device missing |3.2.A1e| | 1 |
| Front Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Brake locking device insecure |3.2.A1e| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Rear Brake pedal attachment screws loose |3.1.2b| | 1 |
| Rear position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Nearside Front suspension assembly component missing |2.3.1| | 1 |
| Rear Rear position lamp incorrect colour |1.1.2b| | 1 |
| Centre Front Brake drum|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| An item not tested |Manual| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Brake lining|s| contaminated brake shoes seized on pivot posts
brake cam also seized |1.1.13 |b|| | 1 |
| Plate brake test No brake control achieves an efficiency of 30%. |3.3.B2a| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Nearside Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Offside Front suspension spring worn and seriously weakened |2.3.2b| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Centre Front Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear Decelerometer brake test indicates a severely juddering brake |3.3.E1e| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Lower Horn not working |1.7.3a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Horn missing |1.7.1| | 1 |
| Rear Brake lever excessively chafed |3.2.A1a| | 1 |
| Front suspension assembly component cracked |2.3.1| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Front suspension assembly component loose |2.3.1| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Headlamp insecure glass separated from reflector. |4.1.1 |c|| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Rear wheel has a loose wheel stud|s| |4.2.3a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Gradient brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.D1b| | 1 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Front Brake component is fractured |3.1.5| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Registration plate lamp issues | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Front Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front Brake drum|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Front Fuel pipe union leaking |7.2.1a| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Front Gradient brake test indicates a severely grabbing brake |3.3.D1d| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing tight spot in centre |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the wheel raised bad tight spot in centre of travel |2.2.1b| | 1 |
| Brake pedal insecure retaining device inadequate. |3.1.2a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort rear brake excessive fluctuation in excess of 25kgs |3.3.A1d| | 1 |
| Brake pedal insecure retaining device missing |3.1.2a| | 1 |
| Front Front wheel spindle securing nut locking device insecure |2.3.3a| | 1 |
| Rear Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Front Built up wheel has a loose bolt/s |4.2.1c| | 1 |
| Rear Built up wheel has a loose bolt/s |4.2.1c| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Front Headlamp incorrect colour replace beam unit |1.2.1| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Horn emits 2 or more alternating tones |1.7.3b| | 1 |
| Centre Front Lower Headlamp main beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Offside Rear Motorcycle structure cracked |6.1.1a| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake lever has inadequate reserve travel (3.1.3b) | 1 |