| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 37 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 31 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 29 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 23 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 20 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Registration plate issues | 14 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 13 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Registration plate lamp issues | 10 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 8 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 8 |
| Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| Nearside Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Riders seat insecure |6.2.1a| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Nearside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Offside Stop lamp emits other than a steady red light |1.3.1b| | 5 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 4 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 4 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 3 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Offside Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Parking brake: efficiency below requirements |3.7.B.7| | 3 |
| Nearside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Offside Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Nearside Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Offside Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Indicator switch defective |1.5.4| | 3 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 3 |
| Horn control defective |1.7.2a| | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Service brake: efficiency below requirements |3.7.C.1a| | 3 |
| Offside Rear position lamp incorrect colour |1.1.2b| | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Steering linkage has excessive free play |2.2.2| | 2 |
| Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Nearside Rear Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Brake grabbing severely |1.2.1 |c|| | 2 |
| Parking brake efficiency less than 50% of the required value (1.4.2 (a) (ii)) | 2 |
| Nearside Rear Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear suspension bearing excessively deteriorated |2.4A.2a|i|| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Nearside Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Nearside Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Front mudguard insecure |2.3.7| | 2 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 2 |
| Rear Suspension component attachment bracket/mounting corroded and seriously weakened (5.3.3 (b) (i)) | 2 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 2 |