| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 39 |
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Horn not working |1.7.3a| | 11 |
| Headlamp aim beam image kick up to the offside |1.6| | 9 |
| Registration plate issues | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear Footrest missing |6.2.1a| | 4 |
| Offside Rear Direction indicator not working |1.5.1c| | 4 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Front wheel spindle securing nut locking device missing |2.3.3a| | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Horn not working (1.7.3a) | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Direction indicator not working |1.5.1c| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Wheel more than one fixing loose (5.2.1 (a) (ii)) | 1 |
| Rear Brake component insecure Locking device missing bolt loose (1.1.21 (c)) | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake reaction bracket securing bolt|s| loose |3.2.A1j| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear suspension movement is excessively stiff no movement |2.4.A.3b| | 1 |
| Offside Exhaust is leaking and excessively noisey blowing at the head |7.1.1b| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system loose |7.1.1.c| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear suspension bush has excessive free play (2.4.A2a(i)) | 1 |
| Rear shock absorber has inadequate damping effect. (2.4.A.3b) | 1 |
| Rear Drive chain sprocket carrier worn to excess (6.2.1e) | 1 |
| Rear Roller brake test indicates a binding brake (3.3.A1a) | 1 |
| Rear Rear shock absorber has inadequate damping effect. (2.4.A.3b) | 1 |
| Drive chain sprocket carrier worn to excess (6.2.1e) | 1 |
| Rear suspension bush excessively deteriorated (2.4.A2a(i)) | 1 |
| Upper Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Nearside Front Direction indicator not working REPLACED BULB (4.4.1 (a) (ii)) | 1 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Offside Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Centre Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Brake pedal attachment screws loose |3.1.2b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Steering lock stop maladjusted |2.1.3| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Shock absorber has negligible damping effect Shock adsorber appears to be seized (5.3.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Suspension component pin or bush excessively worn excess play in rear top shock mount |5.3.4 |a| |i|| | 1 |
| Rear Suspension component mounting modified so the suspension is inoperative seized |5.3.3 |c| |ii|| | 1 |
| Nearside Rear Motorcycle structure joining/attachment plate or fastening insecure (6.1.1 (b) (i)) | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Fork yoke insecure Yoke nut insecure (2.2.2 (d) (i)) | 1 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Lower Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Steering movement excessively notchy with the wheel raised (2.2.1b) | 1 |
| Rear reflector on motorcycle missing (1.4.1) | 1 |
| Offside Exhaust mounting does not fully support the exhaust system (7.1.1.c) | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Offside Front Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced (6.1.1 (c) (i)) | 1 |
| Centre Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Fuel hose leaking fuel filter leaking re-placed and ok (6.1.3 (b) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Rear Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Centre Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Front Position lamp switch faulty |1.1.4a| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain excessively tight, so that it is likely to fail chain has tight spot,so is excess tight at this point,but also loose at other areas (6.1.7 (k) (ii)) | 1 |
| Drive chain sprocket excessively loose sprocket bolts are loose,with a small amount of play detected at bearing (6.1.7 (c) (i)) | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Central Front Position lamp not working |4.2.1 |a|| | 1 |
| Central Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Brake hose connection leaking (1.1.12 (c)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Shock absorber has negligible damping effect bottoming out (5.3.2 (b)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Front All position lamps not working |4.2.1 |a|| | 1 |
| Rear All position lamps not working |4.2.1 |a|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |