| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 55 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 34 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 27 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 24 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 22 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Steering headbearing has excessive free play |2.2.2| | 14 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Rear reflector on motorcycle obscured |1.4.1| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Riders seat insecure |6.2.1a| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 6 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 6 |
| Headlamp insecure |1.2.3b| | 6 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 5 |
| Registration plate issues | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Indicator tell tale not functioning |1.5.2| | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Offside Rear Direction indicators not working |1.5.1c| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Exhaust excessively deteriorated |7.1.1a| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Rear reflector on motorcycle obscured |1.4.2b| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Horn not working |1.7.3a| | 4 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 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 Direction indicators not working |1.5.1c| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 3 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Headlamp insecure |1.2.3b| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Direction indicator not working |1.5.1c| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| An item not tested |Manual| | 2 |
| Exhaust has part of the system missing |7.1.1a| | 2 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Brake lever insecure |3.1.2a| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Nearside Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Front suspension has excessive corrosion which reduces the strength of a load bearing member or its supporting structure. corroided fork stauntion causing seal to fail |2.3.8| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Brake component cracked and seriously reduced in strength |3.2.A1| | 1 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Front Fuel system component leaking |7.2.1a| | 1 |
| Centre Front Lower Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Stop lamp does not illuminate immediately a brake applies from front brake |1.3.1a| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Braking system does not have an approriate system/s fitted according to its age rear brake cable insecurly mounted on rear , |3.1.1| | 1 |
| Rear position lamp insecure lamp unit insecure |1.1.1c| | 1 |
| Fairings insecure and likely to impede the steering rear fairing and lamp unit loose |2.1.2e| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Stop lamp insecure |1.3.3b| | 1 |
| Brake lever is inoperative |3.1.3c| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Stop lamp not working front stop light |4.3.1 |a| |ii|| | 1 |
| Stop lamp not working rear stop light |4.3.1 |a| |ii|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking Main stand not returning securely |6.1.1c| | 1 |
| Centre Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Fairings insecure and likely to impede the steering Rear Mudguard |2.1.2e| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Rear Lower Brake component is excessively corroded |3.1.5| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Nearside Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Front Upper Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Rear Fuel hose leaking |7.2.1a| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Rear Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front All position lamps do not illuminate immediately when switched on side |1.1.3a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 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 Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Stop lamp switch with a delay in operation Not working on front brake switch. |4.3.2 |a| |ii|| | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure Centre stand damaged/loose. |6.1.1 |b| |i|| | 1 |
| Headlamp insecure Headlamp/front panel insecure. |4.1.1 |c|| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Headlamp deteriorated and function impaired no images evident |1.2.3a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Nearside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Exhaust has part of the system missing |7.1.1a| | 1 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Rear Brake cable excessively corroded not returning correctly (1.1.15 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (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 Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Exhaust system insecure (6.1.2 (a)) | 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 Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |