| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| 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 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Registration plate issues | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Footrest missing both (6.2.12 (a)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Direction indicator insecure |1.5.3b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Stop lamp does not illuminate immediately a brake applies Rear switch problem |1.3.1a| | 1 |
| Headlamp at least one does not illuminate on dipped beam Light very dim |1.2.2a|i|| | 1 |
| Headlamp deteriorated and function impaired Dip beam bulb |1.2.3a| | 1 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Stop lamp does not illuminate immediately a brake applies control 1 |1.3.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front shock absorber seal failed and leaking oil both forks |2.3.3| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Motorcycle structure adversely modified |6.1.1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Lower Rear mono-shock pivot excessively worn front link bush |2.4.B.4| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 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 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |