| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 111 |
| Registration plate issues | 60 |
| Rear reflector on motorcycle missing |1.4.1| | 35 |
| 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| | 30 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 24 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 20 |
| Horn not working |1.7.3a| | 18 |
| Headlamp aim beam image kick up to the offside |1.6| | 17 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 15 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 12 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 8 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Front Brake excessively binding (1.2.1 (f)) | 6 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| 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)) | 5 |
| Nearside Front Footrest insecure |6.2.1a| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| 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| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Parking brake lever has no reserve travel |3.1.6b| | 4 |
| Registration plate lamp issues | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 4 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Offside Steering lock stop ineffective |2.1.3| | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| 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|| | 3 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 3 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Fuel pipe leaking |7.2.1a| | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Parking brake: efficiency below requirements |3.7.B.7| | 2 |
| Parking brake efficiency below requirements |3.7.C.1b| | 2 |
| Front Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Brake performance not tested |3.3| | 2 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 2 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Offside Rear Direction indicator missing |1.5.1a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Headlamp insecure (4.1.1 (c)) | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |