| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 52 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 20 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 20 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 19 |
| Steering headbearing has excessive free play |2.2.2| | 14 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Registration plate issues | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 7 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 7 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Headlamp insecure |1.2.3b| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Handlebar mounting clamp loose |2.1.1a| | 5 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 4 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Horn not working |1.7.3a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 3 |
| Offside Rear Direction indicator insecure |1.5.3b| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Nearside Rear Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Brake lever cannot be released smoothly |3.1.3d| | 2 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Brake lever mounting insecure |3.1.2a| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Offside Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Rear Brake lever is inoperative |3.1.3c| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Centre Front Steering linkage has excessive free play |2.2.2| | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak nearside front fork seal leaking (5.3.2 (b)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Shock absorber has a serious fluid leak n/s and o/s |5.3.2 |b|| | 1 |
| Headlamp aim not tested headlamp not working (4.1.2 (b)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 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 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Front Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Outer Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Upper Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Front Suspension rod corroded and seriously weakened |5.3.3 |b| |i|| | 1 |
| Central Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Plate brake test indicates a sticking brake |3.3.B1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Vehicle identification number not displayed (0.2 (a)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 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 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 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 |
| Nearside Fork yoke deformed |2.1.1b| | 1 |
| Offside Fork yoke deformed |2.1.1b| | 1 |
| Nearside Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front position lamp adversely affected by the operation of the horn |1.1.3b| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Brake cable badly frayed |3.2.A1b| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Brake component is excessively corroded |3.1.5| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Centre Footrest insecure |6.2.1a| | 1 |
| Vehicle identification number not legible |6.3.5a| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Nearside Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Front Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected Engine rpm rises on r/h lock (6.2.7 (a) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Inner Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Brake lever mounting insecure |3.1.2a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Nearside Brake lever insecure |3.1.2a| | 1 |
| Rear Stop lamp affected by the operation of the horn |1.3.2| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies Rear control |1.3.1a| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 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 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Offside Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Nearside Rear Direction indicator lens defective such that the emitted light is adversely affected |4.4.1 |b| |ii|| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |