| Most common failures | No# failures |
|---|
| Registration plate issues | 24 |
| Headlamp aim out of alignment | 21 |
| Rear reflector on motorcycle missing |1.4.1| | 13 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Horn not working |1.7.3a| | 6 |
| Rear Position lamp not working (4.2.1 (a)) | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear position lamp insecure |1.1.1c| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Horn not working (7.7 (a) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Direction indicators flashing more than 120 times per minute all |1.5.1c| | 1 |
| Fuel hose leaking excessively or a risk of fire |6.1.3 |b| |ii|| | 1 |
| Fuel system component leaking Fuel pump seal |6.1.3 |b| |i|| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Rear All position lamps do not illuminate immediately when switched on sidecar rear |1.1.3a| | 1 |
| Offside Rear Brake back plate|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Nearside Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Stop lamp not working front switch missing |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Footrest insecure |6.2.1a| | 1 |
| Rear Brake back plate|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies brake pedal |1.3.1a| | 1 |
| Central Rear Stop lamp does not illuminate immediately a brake applies with front brake |1.3.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Front Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Centre Rear Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Centre Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Nearside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Steering operation linkage fouling when handlebars turned from lock to lock |2.1.4 |a|| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Wheel fixing loose |multiple fixings| |5.2.1 |a| |i|| | 1 |
| Rear Wheel fixing missing |multiple fixings| |5.2.1 |a| |i|| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Headlamp main beam affected by the operation of the horn |1.2.2c| | 1 |
| Indicator tell tale not functioning |1.5.2| | 1 |
| Stop lamp not working front brake switch |4.3.1 |a| |ii|| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Rear suspension bush has excessive free play swing arm |2.4.A2a|i|| | 1 |
| Rear Sidecar attachment insecure |5.1.1b| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Fuel tank leaking fuel tap |7.2.1a| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Upper Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement Leaking |7.2.2b| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Nearside Direction indicator adversely affected by the operation of another lamp Do not flash when other lamps are operated |4.4.3 |b|| | 1 |
| Headlamp at least one does not illuminate on dipped beam Does not have a dipped beam pattern |1.2.2a|i|| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride split link fitted wrong way |6.2.1h| | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Fuel pipe so insecure there is a risk of fire (6.1.3 (a) (ii)) | 1 |
| Rear Brake rod has restricted free movement (1.1.15 (e)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Offside Rear Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Front Brake disc insecure (1.1.14 (a) (ii)) | 1 |
| Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Throttle operating incorrectly sticking (6.2.7 (a) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Rear Drive chain horseshoe locking device likely to become detached (6.1.7 (j) (ii)) | 1 |
| Nearside Rear Upper Sidecar structure joining/attachment plate or fastening insecure near seat (6.1.1 (b) (i)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Offside Front Position lamp not working (4.2.1 (a)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Rear Lower Wheel fixing loose (single fixing) Rear wheels spindle locking device missing (5.2.1 (a) (ii)) | 1 |
| Nearside Front Lower Horn not working Horn not working (7.7 (a) (ii)) | 1 |
| Central Rear Lower Wheel alignment incorrect which adversely affects the handling Out of alignment (2.4 (a)) | 1 |
| Position lamp showing red light to the front (4.2.3 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Stop lamp adversely affected by the operation of another lamp side light and stop lamp bulb incorrect may require light unit repositioned
bulb working correctly (4.3.3 (b)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Offside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Suspension arm pin or bush excessively worn rear swing arm (5.3.4 (a) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Shock absorber insecurely attached forks loose in yokes (5.3.2 (a) (i)) | 1 |
| Stop lamp adversely affected by the operation of another lamp Stop lamp adversely affected by tail lamp (4.3.3 (b)) | 1 |
| Registration plate lamp issues | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected freed off cables and lubed. (6.2.7 (a) (ii)) | 1 |
| Front Brake lagging in operation (1.2.1 (d)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |