| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 22 |
| Registration plate issues | 15 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Horn not working |1.7.3a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| 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 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Offside 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 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 2 |
| Registration plate lamp issues | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever attachment screws missing |3.1.2b| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear Brake lagging in operation |1.2.1 |d|| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Central Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Throttle operating incorrectly throttle cables have been repaired |6.2.1f| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Exhaust is leaking and excessively noisey downpipe to exhaust not connected |7.1.1b| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Position lamp switch faulty |1.1.4a| | 1 |
| Direction indicators not working All indicators Missing |1.5.1c| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Lower 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 |
| Centre Front Upper Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Nearside Hazard warning lamps inoperative (4.4.1 (e)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Rear Direction indicator lens defective such that the emitted light is adversely affected (4.4.1 (b) (ii)) | 1 |
| Rear Brake component insecure rear brake tie bar locking devices missing (1.1.21 (c)) | 1 |