| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 38 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 31 |
| Steering headbearing has excessive free play |2.2.2| | 27 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 27 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 27 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 19 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 19 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Direction indicators not working |1.5.1c| | 11 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 10 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 10 |
| Horn not working |1.7.3a| | 10 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 9 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Riders seat insecure |6.2.1a| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Indicator tell tale not functioning |1.5.2| | 8 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 7 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 6 |
| Offside Steering lock stop ineffective |2.1.3| | 6 |
| Front suspension has inadequate damping effect. |2.3.6c| | 6 |
| Registration plate issues | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 5 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Front Horn not working |1.7.3a| | 4 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Front Steering headbearing has excessive free play |2.2.2| | 4 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 4 |
| Exhaust excessively deteriorated |7.1.1a| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Handlebar mounting clamp loose |2.1.1a| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Nearside Steering lock stop missing |2.1.3| | 3 |
| Rear Direction indicator not working |1.5.1c| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 3 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front suspension assembly component excessively misaligned |2.3.1| | 2 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Nearside Indicator tell tale not functioning |1.5.2| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear Rear wheel insecure |4.2.3b| | 2 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside Steering lock stop missing |2.1.3| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Exhaust system insecure (6.1.2 (a)) | 2 |
| Direction indicator not working |1.5.1c| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Rear Brake lever is inoperative |3.1.3c| | 2 |
| Horn control defective |1.7.2a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Handlebar mounting clamp loose |2.1.1a| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front Direction indicator missing |1.5.1a| | 2 |
| Direction indicators flashing less than 60 times a minute ALL |1.5.1c| | 1 |
| Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Front Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Stop lamp does not illuminate immediately a brake applies from rear brake |1.3.1a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake lever attachment screws loose |3.1.2b| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Centre Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Outer Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Registration plate lamp issues | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Offside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Nearside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Lower Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Centre Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Lower Motorcycle structure cracked |6.1.1a| | 1 |
| Nearside Front Brake lever insecure |3.1.2a| | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Centre Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Upper Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Front Lower Front suspension assembly component cracked |2.3.1| | 1 |
| Offside Front Lower Front suspension assembly component loose |2.3.1| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front Built up wheel has a loose bolt/s |4.2.1c| | 1 |
| Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Headlamp aim beam image too far to the left |1.6.4| | 1 |
| Front Horn control defective |1.7.2a| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Brake hose damaged | 1 |
| Stop lamp does not illuminate immediately a brake applies Front brake lever |1.3.1a| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Centre Rear position lamp insecure |1.1.1c| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Centre Front Exhaust mounting missing |7.1.1c| | 1 |
| Centre Front 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 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Front Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 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 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Brake cable badly frayed |3.2.A1b| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front Brake reaction bracket insecure |3.2.A1j| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Front Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake |1.3.1a| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Nearside Front suspension assembly component cracked |2.3.1| | 1 |
| Offside Front suspension assembly component cracked |2.3.1| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |