| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 39 |
| Rear reflector on motorcycle missing |1.4.1| | 24 |
| Registration plate issues | 16 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Horn not working |1.7.3a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front position lamp incorrect colour |1.1.2a| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front An item not tested |Manual| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Offside Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front suspension assembly component loose |2.3.1| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Front Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Nearside Front Upper Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Front Lower Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Front Lower Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Offside Front Upper Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear An item not tested |Manual| | 1 |
| Nearside Rear Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 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 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 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 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Brake hose fouling |3.2.B3b| | 1 |
| Offside Front Brake hose fouling |3.2.B3b| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Direction indicators not working OSF Indicator inop |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil Right hand fork has oil on the leg |2.3.3| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak Fork seal (5.3.2 (b)) | 1 |
| Rear Position lamp not working PRS Bulbs replaced (4.2.1 (a)) | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Throttle operating incorrectly STICKY THROTTLE (6.2.7 (a) (i)) | 1 |
| Offside Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Central Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Rear 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 |
| Offside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (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 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Nearside Front All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Front All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Rear All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Nearside Rear All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Nearside Rear Wheel spindle locking device ineffective Wheel Spindle Incorrectly Fitted, Locking Nut Ineffective. (5.2.1 (d)) | 1 |
| Roller brake test indicates a binding brake front |3.3.A1a| | 1 |
| Front shock absorber seal failed and leaking oil left and right fork seals |2.3.3| | 1 |
| Direction indicator insecure |1.5.3b| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Drive chain excessively loose |6.2.1d| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Lower Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Lower Suspension component pin or bush excessively worn Shock/pivot. (5.3.4 (a) (i)) | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |