| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 47 |
| Registration plate issues | 38 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 14 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 13 |
| Headlamp aim beam image kick up to the offside |1.6| | 12 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 11 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Horn not working |1.7.3a| | 7 |
| Rear Wheel spoke excessively loose |4.2.1b| | 7 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| 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| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Nearside Rear Direction indicators not working |1.5.1c| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Inner Steering lock stop ineffective |2.1.3| | 2 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Registration plate lamp issues | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Rear Service brake efficiency below requirements (1.2.2 (a) (i)) | 2 |
| Rear wheel bearings are excessively tight |2.4.A.2c| | 1 |
| Throttle operating incorrectly not returning |6.2.1f| | 1 |
| 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 |
| Front position lamp does not illuminate immediately when switched on side |1.1.3a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on side |1.1.3a| | 1 |
| Rear Brake back plate|s| insecure |3.2.A1j| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Stop lamp adversely affected by the operation of another lamp when brake applied causing headlamp to flash |4.3.3 |b|| | 1 |
| Headlamp aim not tested no beam pattern |4.1.2 |b|| | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Nearside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Horn is not a constant note |1.7.3c| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front Upper Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Inner Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Outer Front Direction indicator not working |1.5.1c| | 1 |
| Inner Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Outer Brake cable has a significantly damaged outer casing. |3.2.A1b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Exhaust excessively deteriorated & blowing to excess |7.1.1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Throttle operating incorrectly does not return |6.2.1f| | 1 |
| Stop lamp remains on when the brake is released from front lever |1.3.1e| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Rear Drive chain excessively tight |6.2.1d| | 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 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 1 |
| Nearside Rear Indicator tell tale not functioning |1.5.2| | 1 |
| Front Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear 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 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Indicator switch inoperative Does not stay on |4.4.2 |a| |ii|| | 1 |
| Nearside Rear Parking brake lever inoperative Cable missing |1.1.6 |d|| | 1 |
| Offside Parking brake lever pivot worn to the extent that the brake may inadvertently release |1.1.6 |b| |ii|| | 1 |
| Service brake efficiency below requirements |1.2.2 |a| |i|| | 1 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 1 |
| Service brake: efficiency below requirements |3.7.B.7| | 1 |
| Central Rear Lower Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Throttle operating incorrectly sticking on right hand steering lock |6.2.1f| | 1 |
| Offside Rear Rear wheel bearing rough when rotated |2.6.1| | 1 |
| Offside Rear Rear wheel bearing has excessive play |2.6.2| | 1 |
| Front Road wheel bead rim badly distorted |4.2.A.1a| | 1 |
| Front Road wheel spoke excessively loose |4.2.A.1b| | 1 |
| Rear Brake pedal has inadequate reserve travel rear brake pedal has to much travel, adjusted . |3.1.3b| | 1 |
| Nearside Handlebar grip not secure to handlebars. |2.2.1 |f| |ii|| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake component insecure split pin missing |1.1.21 |c|| | 1 |
| Front Handlebar mounting insecure |2.2.1 |a| |i|| | 1 |
| Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Rear Mechanical brake component has restricted free movement | 1 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Service brake: efficiency below requirements |3.7.C.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Rear Footrest insecure |6.2.1a| | 1 |
| Centre Front Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition |7.1.4| | 1 |
| Nearside Rear Footrest missing |9.6.1| | 1 |
| Offside Rear Footrest missing |9.6.1| | 1 |
| Offside Front Brake hose leaking |3.6.A.1| | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Offside Stop lamp not working |1.2.1b| | 1 |
| Nearside Stop lamp not working |1.2.1b| | 1 |
| Hazard warning switch inoperative |4.4.2 |a| |ii|| | 1 |
| Hazard warning switch missing |1.4.B.1d| | 1 |
| Front Front suspension assembly component excessively bent |9.2.5d| | 1 |
| Brake lever is positioned so that the brake cannot be readily applied |9.3.1g| | 1 |
| Towbar mounting obviously of an inappropriate size |6.6.2| | 1 |
| Offside Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 1 |
| Front Headlamp incorrect colour |1.7.5b| | 1 |
| Offside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 1 |
| Offside Direction indicators not in good working order |function impaired| |1.5.A1b| | 1 |
| Nearside Rear Lower Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Central Rear Upper Seat insecure |6.2.1a| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp light source and lamp not compatible kick wrong way (4.1.4 (c)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 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 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Parking brake lever defective so that it cannot be satisfactorily operated (1.1.6 (d)) | 1 |
| Stop lamp(s) adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |
| Nearside Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening insecure crash bars (6.1.1 (b) (i)) | 1 |
| Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Headlamp lens seriously defective Lens is loose, unable to check aim. (4.1.1 (b) (ii)) | 1 |
| Rear Direction indicator likely to become detached both (4.4.1 (c) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Steering linkage locking device missing splitpin missing on swinging arm spindle (2.1.3 (d)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Offside Front Brake hose leaking (1.1.12 (c)) | 1 |
| Rear Brake valve leaking at reservoir cap split (1.1.7 (d) (i)) | 1 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 1 |
| Fuel tank leaking (6.1.3 (b) (i)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Central Rear Wheel spoke excessively loose (5.2.2 (d)) | 1 |
| Nearside Front Upper Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Stop lamp(s) switch with a delay in operation doesnt work (4.3.2 (a) (ii)) | 1 |
| Service brake efficiency less than 50% of the required value (1.2.2 (a) (ii)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected no pressure on pedal at all (1.1.2 (b) (ii)) | 1 |