| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Drive chain excessively loose |6.2.1d| | 15 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Handlebar deformed |2.1.1b| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 8 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 8 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Rear reflector on motorcycle obscured |1.4.2b| | 7 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 6 |
| Registration plate issues | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 5 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 5 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Headlamp insecure |1.2.3b| | 4 |
| Headlamp insecure (4.1.1 (c)) | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 3 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Offside Front Direction indicators not working |1.5.1c| | 3 |
| Rear reflector on motorcycle obscured |1.4.1| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 2 |
| Offside Front Direction indicator missing (4.4.1 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Drive chain sprocket excessively loose |6.1.7 |c| |i|| | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Front Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Suspension arm attachment bracket/mounting insecure Swingarm fastener loose (5.3.3 (a) (i)) | 1 |
| Rear Suspension arm ball joint excessively worn Swing arm bearings worn (5.3.4 (a) (i)) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Drive chain excessively loose also dry |6.2.1d| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Offside Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear reflector on motorcycle obscured covered by learner plate |1.4.1| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort 20 kgf plus |1.2.1 |e|| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front suspension assembly component excessively bent top yoke not inline with front wheel |2.3.1| | 1 |
| Offside Rear Lower Brake lever excessively corroded |3.2.A1c| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Central Rear Lower Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Nearside Front All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Position lamp switch does not operate in accordance with the requirements not switching from high/low beams (4.2.2 (a)) | 1 |
| Rear Brake reaction bracket excessively worn loose and insecure and locking devise missing (1.1.15 (b)) | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Throttle operating incorrectly throttle cable incorrectly fitted |6.2.1f| | 1 |
| Headlamp aim not tested headlight assembly loose . unable to carry out beam test. |1.6| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s headlight dip switch has unreliable operation |1.2.2b|ii|| | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride drive chain split link fitted incorrectly |6.2.1h| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Headlamp damaged and function impaired not showing clearly when engine is on tickover |1.2.3a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Drive chain excessively loose also has seized links |6.2.1d| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension swingarm & spindle gouged chunk out of aftermarket exhaust |2.4.A.3a| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort front disc warped |3.3.A1d| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering front frame tube bent. |2.5.1| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Rear Brake lining|s| less than 1.0 mm thick |1.1.13 |a|| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Direction indicator not working L/H Front (4.4.1 (a) (ii)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Handlebar deformed to the extent that steering is affected |2.2.1 |c| |ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Footrest insecure (6.2.12 (a)) | 1 |
| Brake locking device missing split pin missing from torque arm |3.2.A1e| | 1 |
| Horn not working missing (7.7 (a) (ii)) | 1 |
| Rear Brake component insecure |1.1.21 |c|| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Central Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear reflector on motorcycle insecure |1.4.2c| | 1 |
| Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Headlamp insecure TEMP REPAIR AT TIME OF TEST |4.1.1 |c|| | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Nearside Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Offside Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Stop lamp not working front and rear (4.3.1 (a) (ii)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Front Wheel excessively distorted The maximum lateral rim distortion (run out or buckling) limits are:
2mm for aluminium alloy rims (cast or fabricated) (5.2.2 (c) (i)) | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Horn missing |1.7.1| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Horn not working |1.7.3a| | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Drive chain excessively tight has excessive tight spot |6.2.1d| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking centre stand |6.1.1c| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Rear suspension component excessively corroded. swinging arm very rusty and has holes. |2.4.A.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock when turning right |2.1.4| | 1 |
| Offside Rear Brake reaction bracket securing bolt|s| missing |3.2.A1j| | 1 |
| Central Front Headlamp insecure |1.2.3b| | 1 |
| Nearside Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Offside Steering operation impeded by a fairing (2.1.4 (e)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Offside Front Direction indicator likely to become detached damaged (4.4.1 (c) (ii)) | 1 |
| Fuel pipe leaking |7.2.1a| | 1 |
| Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp does not emit a steady light front brake |1.3.1b| | 1 |
| Stop lamp not working control 2 (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Steering control fouling between components which interferes with the free movement of the steering Hand guards |2.1.2a| | 1 |
| Handlebar restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake locking device missing torque arm |3.2.A1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride joining link clip |6.2.1h| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Handlebar excessively deformed |2.2.1 |c| |i|| | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock fouling on steering lock |2.1.4 |a|| | 1 |
| Clutch lever positioned so it cannot be readily operated snapped at pivot point |6.2.7 |b|| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Drive chain sprocket carrier worn to excess cush rubbers |6.2.1e| | 1 |
| Rear Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies Rear brake switch not working |1.3.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear reflector missing |COVERED BY LEARNER PLATE| |4.8.2 |a| |ii|| | 1 |
| Rear Drive chain sprocket excessively loose |SPROCKET CARRIER BEARINGS COLLAPSED| |6.1.7 |c| |i|| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Brake pedal is bent and the brake cannot be readily applied (1.1.2 (d)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp remains on when the brake is released front brake switch |1.3.1e| | 1 |