| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 36 |
| Rear reflector on motorcycle missing |1.4.1| | 29 |
| Registration plate issues | 18 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Horn not working |1.7.3a| | 4 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 3 |
| Rear Brake pedal pivots excessively worn |3.1.3a| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear Brake disc|s| cracked |3.2.A1g| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Direction indicator insecure |1.5.3b| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| 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| | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Fuel system component insecure |7.2.1b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 2 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Horn control defective |1.7.2a| | 1 |
| Offside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Offside Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Lower Brake pipe union leaking fluid |3.2.B4| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Offside Rear Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Brake hose leaking fluid |3.2.B4| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Outer Rear Lower Brake pedal pivots excessively worn |3.1.3a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Exhaust has part of the system missing no silencer fitted |7.1.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake |1.3.1a| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam Dip beam not working |1.2.2a|i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam Main beam not working |1.2.2a|ii|| | 1 |
| Sidecar front position lamp missing |1.1.1a| | 1 |
| Nearside Sidecar direction indicator missing |1.5.1a| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Nearside Front Front suspension assembly component missing |2.3.1| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front Stop lamp flickers when tapped lightly by hand |1.3.1d| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Upper Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Upper Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Front Lower Footrest insecure |6.2.1a| | 1 |
| Offside Front Lower Footrest insecure |6.2.1a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Drive chain excessively loose rear |6.2.1d| | 1 |
| Brake hose damaged | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Rear Brake component leaking fluid |3.2.B4| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Footrest insecure |6.2.12 |a|| | 1 |
| Rear Brake component insecure Rear M/Cylinder Pivot Split Pin Missing |1.1.21 |c|| | 1 |
| Nearside Rear Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| An item not tested |Manual| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Riders seat insecure |6.2.1a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Rear suspension bush has excessive free play bolt loose |2.4.A2a|i|| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Indicator switch insecure nearside switchgear loose |1.5.4| | 1 |
| Position lamp switch insecure offside switchgear loose. |1.1.4b| | 1 |
| Front suspension has excessive stiffness in the suspension movement. forks do not move |2.3.6b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars traps fingers on left hand lock. |2.1.2b| | 1 |
| Rear suspension component loose rear suspension linkage bolts loose. |2.4.A.1a| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Stop lamp not working With front brake. |4.3.1 |a| |ii|| | 1 |
| Front Brake component leaking fluid |3.2.B4| | 1 |
| Brake component leaking fluid |3.2.B4| | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Wheel fixing missing (single fixing) locking devise missing (5.2.1 (a) (ii)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel Rear brake pedal spongy. (1.1.2 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Stop lamp not working Rear brake stop lamp. (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |