| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 34 |
| Drive chain excessively loose |6.2.1d| | 23 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Steering headbearing has excessive free play |2.2.2| | 17 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 16 |
| Horn not working |1.7.3a| | 11 |
| Drive chain worn to excess |6.2.1e| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 7 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Rear Drive chain excessively loose |6.2.1d| | 5 |
| Rear Footrest missing |6.2.1a| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Brake pedal cannot be released smoothly |3.1.3d| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Registration plate issues | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 2 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Front Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear suspension component excessively corroded. swingarm |2.4.A.1a| | 2 |
| Footrest missing passenger |6.2.1a| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm bearings have to much side to side movement, moves when brake applied (5.3.4 (a) (i)) | 1 |
| All direction indicators adversely affected by the operation of another lamp headlight flashes when indicators used/suspect battery voltage (4.4.3 (b)) | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Offside Position lamp switch insecure |1.1.4b| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Central Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Front Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Motorcycle structure excessively corroded swing arm |6.1.1a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Brake back plate|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Front wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Front Brake master cylinder leaking sight glass deteriorated (1.1.10 (b) (ii)) | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Nearside Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake linkage has abnormal movement due to excessive wear |3.2.A1i| | 1 |
| Motorcycle structure excessively corroded swinging arm |6.1.1a| | 1 |
| Rear Brake pedal insecure |1.1.2 |e| |i|| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear Brake lining(s) less than 1.0 mm thick (1.1.13 (a)) | 1 |
| Rear Brake pivot has restricted free movement (1.1.15 (e)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Central Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Central Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear suspension has an inadequate repair of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Brake hose excessively deteriorated | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Steering linkage has excessive free play |2.2.2| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear suspension has corrosion which reduces the strength of a load bearing member or its supporting structure. swing arm |2.4.A.2d| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 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 |
| Rear Brake component has an inadequate repair |3.1.5| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Brake component insecure (1.1.21 (c)) | 1 |
| Rear Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced (6.1.1 (c) (i)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Wheel fixing loose (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Rear Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Rear Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Offside Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock Fouling cables (2.1.4 (a)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced Main swing arm (6.1.1 (c) (i)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Front Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| All position lamps adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling wheel out of adjustment |2.5.1| | 1 |
| Nearside Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Handlebar deformed to the extent that steering is affected |2.2.1 |c| |ii|| | 1 |
| Suspension arm corroded and seriously weakened Swingarm central brace corroded |5.3.3 |b| |i|| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear Brake linkage excessively corroded |3.2.A1c| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Nearside Riders seat insecure |6.2.1a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Rear Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies on rear brake lever operation |1.3.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Rear suspension component excessively corroded. swingarm |2.4.A.1a| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Footrest missing both passenger |6.2.1a| | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Front Brake grabbing severely FRONT BRAKE PIVOT TIGHT NOT ALLOWING BRAKE TO BE APPLIED IN A SMOOTH OPERATION (1.2.1 (c)) | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected HAS AN ELASTIC BAND BEING USED TO RETURN BRAKE PEDAL (1.1.2 (b) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Engine mounting/bracket excessively loose ENGINE INSECURE (6.1.8 (a) (ii)) | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride chain clip |6.2.1h| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Front Brake master cylinder severely damaged |3.2.B1b| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |