| Most common failures | No# failures |
|---|
| Drive chain excessively loose |6.2.1d| | 15 |
| Headlamp aim out of alignment | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 11 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 8 |
| Registration plate issues | 8 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 8 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Drive chain excessively tight |6.2.1d| | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Headlamp insecure |1.2.3b| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 4 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 3 |
| Registration plate lamp issues | 3 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 2 |
| Rear wheel spindle loose |2.4.A.2b| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Brake lever insecure Pivot bolt loose |3.1.2a| | 1 |
| Throttle operating incorrectly Sticks badly |6.2.1f| | 1 |
| Footrest missing Both rear |6.2.1a| | 1 |
| Front shock absorber seal failed and leaking oil Both |2.3.3| | 1 |
| Rear suspension bush has excessive free play Bottom shock |2.4.A2a|i|| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Brake fluid not visible MASTER CYLINDER POT WORN (1.1.10 (d) (iii)) | 1 |
| Offside Front Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Central Lower Suspension component pin or bush excessively worn SHOCK LINKAGE BUSH (5.3.4 (a) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm (5.3.4 (a) (i)) | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Front Front wheel spindle securing nut locking device missing |2.3.3a| | 1 |
| Offside Rear Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Offside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Rear Drive chain fouling another component |6.2.1d| | 1 |
| Offside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Nearside Front Lower Brake hose excessively kinked |3.2.B3a| | 1 |
| Outer Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Plate brake test No brake control achieves an efficiency of 30%. |3.3.B2a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Fork yoke cracked |2.1.1b| | 1 |
| Fork yoke fractured no steering stop |2.2.2 |d| |i|| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Brake pedal is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Throttle operating incorrectly loose |6.2.1f| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake disc|s| insecure |3.2.A1g| | 1 |
| Central Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Rear suspension has a fracture of a load bearing member or its supporting structure. Near rear sprocket |2.4.A.2d| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Offside Front Stop lamp not working brake lever (4.3.1 (a) (ii)) | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Suspension arm attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Front Brake fluid reservoir severely damaged |3.2.B1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Nearside Front Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced Nylock nut not fully secured to frame (6.1.1 (b) (ii)) | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front control lever |1.3.1a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Brake caliper inadequately mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Rear Drive chain excessively loose sprocket retaining nuts |6.2.1d| | 1 |
| Horn missing |1.7.1| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Centre Rear Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Exhaust mounting missing |7.1.1c| | 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 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Fuel tank leaking |7.2.1a| | 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 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Direction indicator missing both sides (4.4.1 (a) (ii)) | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Stop lamp does not emit a steady light front lever |1.3.1b| | 1 |
| Throttle operating incorrectly rev too high |6.2.1f| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake cylinder leaking hydraulic fluid calliper area |3.2.B1e| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Brake lever is inoperative |3.1.3c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Drive chain worn to excess |6.2.1e| | 1 |
| Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Rear Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Handlebar handgrip missing |2.1.1c| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Central Rear Rear wheel bearings have excessive free play rear wheel bearings have free play |2.4.A.2c| | 1 |
| Central Rear Footrest missing both passenger footrests missing |6.2.1a| | 1 |
| Central Rear Brake component damaged and seriously reduced in strength rear caliper loose on sliding bracket |3.2.A1| | 1 |
| Central Front Roller brake test indicates a binding brake front brake binding |3.3.A1a| | 1 |