| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 11 |
| Offside Rear Direction indicator not working |1.5.1c| | 11 |
| Registration plate issues | 11 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 9 |
| Horn not working |1.7.3a| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Steering headbearing has excessive free play |2.2.2| | 7 |
| Front wheel bearings are excessively rough |2.3.5b| | 7 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 7 |
| Riders seat insecure |6.2.1a| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Offside Rear Direction indicators not working |1.5.1c| | 4 |
| Indicator tell tale not functioning |1.5.2| | 4 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 4 |
| Headlamp insecure |1.2.3b| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Front Riders seat insecure |6.2.1a| | 2 |
| Horn sounds harsh or grating |1.7.3c| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake |1.3.1a| | 1 |
| Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Rear Gradient brake test indicates a binding brake |3.3.D1c| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen dip/main wrong way around |4.1.2 |a|| | 1 |
| Headlamp light intensity severely reduced when indicators are used |4.1.4 |a|| | 1 |
| Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Offside Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Front wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Front Headlamp dipped beam flickers when tapped lightly by hand |1.2.2c| | 1 |
| Front Brake drum|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Wheel hub excessively damaged (5.2.1 (b) (i)) | 1 |
| Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Front Brake drum|s| insecure |3.2.A1g| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Rear Direction indicator lens defective such that the emitted light is adversely affected |4.4.1 |b| |ii|| | 1 |
| Front Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Horn not working No Battery fitted at time of test (7.7 (a) (ii)) | 1 |
| Riders seat insecure catch missing |6.2.5 |a| |ii|| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Wheel has bolts/rivets missing or loose to the extent that control of the motorcycle is likely to be adversely affected Rear Wheel Loose (5.2.2 (e) (ii)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Centre Front Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Position lamp not working side lamp (4.2.1 (a)) | 1 |
| Offside Front Wheel excessively distorted |5.2.2 |c| |i|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Registration plate lamp issues | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Centre Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Sidecar direction indicator missing |1.5.1a| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear All direction indicators adversely affected by the operation of another lamp |4.4.3 |b|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear wheel has a missing wheel stud|s| |4.2.3a| | 1 |
| Front suspension assembly component excessively misaligned |2.3.1| | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Front Brake pipe inadequately supported |3.2.B2b| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Direction indicator not working left |1.5.1c| | 1 |
| Front Direction indicator incorrect colour right |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour left |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour right |1.5.1b| | 1 |
| Handlebar mounting clamp loose was loose |2.1.1a| | 1 |