| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 31 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 10 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Rear Position lamp not working (4.2.1 (a)) | 5 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Brake pipe inadequately supported |3.2.B2b| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Horn not working |1.7.3a| | 3 |
| Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear Wheel spoke cracked. |4.2.1b| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Registration plate lamp issues | 2 |
| Registration plate issues | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Nearside Front Fuel system component leaking |7.2.1a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Sidecar rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Sidecar direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Offside Fuel system component leaking fuel tap leaking from tank and on off tap |7.2.1a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Fuel pipe leaking |7.2.1a| | 1 |
| Offside Fuel pipe leaking |7.2.1a| | 1 |
| Offside Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Brake fluid reservoir fluid level dangerously low Refilled. Brake hydraulic system not leaking at time of test. |3.2.B1d| | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Offside Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Upper Brake pipe union leaking fluid |3.2.B4| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Fuel system component leaking |7.2.1a| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Central Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Riders seat insecure riders seat insecure |6.2.1a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Brake pipe excessively corroded | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Stop lamp not working by application of rear brake (4.3.1 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Offside Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Central Rear Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Fuel pipe insecure fuel pipe easily detached from fuel tap. (6.1.3 (a) (i)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Fuel pipe so insecure there is a risk of fire (6.1.3 (a) (ii)) | 1 |
| Offside Fuel pipe so insecure there is a risk of fire (6.1.3 (a) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Upper Fork yoke insecure top nut loose (2.2.2 (d) (i)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Wheel spindle loose (5.2.1 (c) (i)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |