| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Registration plate issues | 12 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Horn not working |1.7.3a| | 6 |
| Offside Rear Direction indicator not working |1.5.1c| | 5 |
| Offside Rear Direction indicators not working |1.5.1c| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Headlamp insecure (1.2.3b) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Fuel cap sealing washer torn |7.2.2c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Built up wheel has a bolt/s missing |4.2.1c| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Stop lamp does not illuminate immediately a brake applies stop lamp inop |1.3.1a| | 1 |
| All position lamps adversely affected by the operation of another lamp all lights flash when the indicators are in use |1.1.3b| | 1 |
| Front wheel bearings have excessive free play front wheel bearing is noisey and has to much play |2.3.5b| | 1 |
| Rear wheel bearings have excessive free play rear wheel bearing or poss rear hub is worn/loose |2.4.A.2c| | 1 |
| Stop lamp does not illuminate immediately a brake applies front |1.3.1a| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake drum|s| insecure |3.2.A1g| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Stop lamp insecure |1.3.3b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Direction indicators affected by the operation of another lamp rear lights |1.5.1c| | 1 |
| Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Wheel bearing play so excessive that directional control is impaired |5.1.3 |a| |ii|| | 1 |
| Front Suspension component pin or bush excessively worn suspension bush or pin |5.3.4 |a| |i|| | 1 |
| Front Lower Shock absorber insecurely attached bush / pin |5.3.2 |a| |i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| All direction indicators incorrect colour |4.4.3 |a|| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Brake component has an inadequate repair |3.1.5| | 1 |
| Nearside Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Offside Rear Motorcycle structure excessively corroded |6.1.1a| | 1 |
| Stop lamp remains on when the brake is released (1.3.1e) | 1 |
| Nearside Rear Direction indicators flashing less than 60 times a minute (1.5.1c) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Headlamp dipped beam affected by the operation of another lamp (1.2.2c) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Suspension component pin or bush excessively worn rear suspension / engine mounts (5.3.4 (a) (i)) | 1 |
| Motorcycle structure is so deformed it is likely to adversely affect braking or steering rear wheel fitted incorrectly (6.1.1 (a) (ii)) | 1 |
| Brake hose excessively deteriorated | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Centre Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Rear Brake drum|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Sidecar rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Fuel cap missing sealing device missing (6.1.3 (b) (i)) | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Built up wheel has a loose bolt/s |4.2.1c| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Front Lower Front suspension spring incomplete front spring perch badly corroaded |2.2.1b|I|| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam dip beam not working |1.2.2a|i|| | 1 |
| Centre Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Built up wheel has a loose bolt/s |4.2.1c| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |