| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 49 |
| Rear reflector on motorcycle missing |1.4.1| | 26 |
| Steering headbearing has excessive free play |2.2.2| | 18 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 15 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 14 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 14 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 12 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 10 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 10 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Indicator tell tale not functioning |1.5.2| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Registration plate issues | 8 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Horn not working |1.7.3a| | 7 |
| Headlamp insecure |1.2.3b| | 7 |
| Headlamp aim beam image kick up to the offside |1.6| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 6 |
| Fuel cap sealing washer missing |7.2.2c| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 5 |
| Front Steering headbearing has excessive free play |2.2.2| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 4 |
| Rear reflector on motorcycle obscured |1.4.1| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear wheel insecure |4.2.3b| | 4 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Offside Direction indicator not working |1.5.1c| | 3 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 3 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Nearside Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 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 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 2 |
| Rear Direction indicators not working |1.5.1c| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Horn is not a constant note |1.7.3c| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Offside Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 2 |
| Rear Front mudguard insecure |2.3.7| | 2 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Steering linkage has excessive free play |2.2.2| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Upper Exhaust mounting missing |7.1.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear An item not tested |Manual| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Front position lamp insecure |1.1.1c| | 1 |
| Offside Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Outer Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Nearside Front Brake hose fouling |3.2.B3b| | 1 |
| Nearside Front Brake lever insecure |3.1.2a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Front Brake hose stretched by steering movement |3.2.B3b| | 1 |
| Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Centre Front Lower Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake lining|s| contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake lining|s| contaminated by oil or grease |3.2.A1k| | 1 |
| Upper Steering linkage has excessive free play |2.2.2| | 1 |
| Lower Steering linkage has excessive free play |2.2.2| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front Rear position lamp incorrect colour |1.1.2b| | 1 |
| Brake hose damaged | 1 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Offside Brake lever pivots excessively worn |3.1.3a| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| An item not tested |Manual| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Exhaust mounting does not fully support the exhaust system bolts loose |7.1.1.c| | 1 |
| Rear wheel bearings have excessive free play play in rear wheel |2.4.A.2c| | 1 |
| Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Nearside Rear position lamp incorrect colour |1.1.2b| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Nearside Brake lever has inadequate reserve travel rear control |3.1.3b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear suspension has a fracture of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Rear suspension has an inadequate repair of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Nearside Rear Rear suspension has a fracture of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Indicator tell tale not functioning |1.5.2| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Offside Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Suspension component has excessive wear or free play front mounting (5.3.3 (d)) | 1 |
| Rear Suspension component insecure and control of the motorcycle impaired (5.3.3 (a) (ii)) | 1 |
| Headlamp light intensity severely reduced dip beam (4.1.4 (a)) | 1 |
| Horn not working working intermittently (7.7 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn engine mountings (5.3.4 (a) (i)) | 1 |
| Front position lamp does not face the front |1.1.1d| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.4 |a|| | 1 |
| Registration plate lamp issues | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| All position lamps do not illuminate immediately when switched on rear reg plate light |1.1.3a| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork seal failed by corrosion to fork leg (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak fork seal failed by corrosion to fork leg (5.3.2 (b)) | 1 |
| Nearside Front Upper Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Rear Lower Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake cable badly frayed |3.2.A1b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Lower Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |