| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 72 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 16 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 16 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Registration plate issues | 13 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Horn not working |1.7.3a| | 10 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| 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| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Stop lamp emits other than a steady red light |1.3.1b| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp light source and lamp not compatible |4.1.4 |c|| | 2 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 2 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front position lamp damaged and function impaired |1.1.1b| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Seat insecure |6.2.1a| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Offside Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Centre Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Brake hose leaking at master cylinder |1.1.12 |c|| | 1 |
| Brake fluid significantly below minimum mark |1.1.10 |d| |ii|| | 1 |
| Brake performance not tested due to fluid leak |1.2.1 |g|| | 1 |
| Offside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Upper Brake pipe union leaking fluid |3.2.B4| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Centre Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Fuel hose damaged |6.1.3 |c| |ii|| | 1 |
| Suspension component pin or bush excessively worn Pinion housing bush |5.3.4 |a| |i|| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Nearside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Position lamp not working Rear Stop Light |4.2.1 |a|| | 1 |
| Rear Wheel spoke cracked. |4.2.1b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Exhaust mounting missing |7.1.1c| | 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 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 |
| Rear Rear position lamp incorrect colour |1.1.2b| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Fuel system component leaking right side |7.2.1a| | 1 |
| Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Nearside Front Brake component is fractured |3.1.5| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front & Rear |1.3.1a| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Nearside Front Upper Handlebar cracked |2.1.1b| | 1 |
| Nearside Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Offside Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front suspension assembly component loose |2.3.1| | 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 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear suspension component loose swing arm |2.4.A.1a| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Brake component has restricted free movement and operation is likely to be impeded rear lever |3.2.A1h| | 1 |
| Offside Brake disc|s| insecure |3.2.A1g| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear An item not tested |Manual| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Wheel spoke excessively loose |4.2.1b| | 1 |
| Floor brake test No brake control achieves an efficiency of 30%. |3.3.C1a| | 1 |
| Offside Fuel hose leaking |7.2.1a| | 1 |
| Headlamp aim beam image too far to the right |1.6.4| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Nearside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 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 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Indicator tell tale not functioning |1.5.2| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |