| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 163 |
| Horn not working |1.7.3a| | 55 |
| Drive chain excessively loose |6.2.1d| | 39 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 37 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 36 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 24 |
| Registration plate issues | 20 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 20 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 19 |
| Rear Brake excessively binding (1.2.1 (f)) | 19 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Front Brake excessively binding (1.2.1 (f)) | 18 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Drive chain worn to excess |6.2.1e| | 11 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 11 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 11 |
| Horn not working |7.7 |a| |ii|| | 10 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 10 |
| Horn not working (7.7 (a) (ii)) | 10 |
| Rear Brake excessively binding |1.2.1 |f|| | 9 |
| Drive chain excessively tight |6.2.1d| | 9 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 9 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 9 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 9 |
| Steering headbearing has excessive free play |2.2.2| | 8 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Rear position lamp insecure |1.1.1c| | 7 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Front Horn not working |1.7.3a| | 6 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 6 |
| Horn not working (7.7 (a)) | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Offside Front Footrest insecure |6.2.1a| | 5 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Offside Front Direction indicators not working |1.5.1c| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 4 |
| Rear Direction indicator not working |1.5.1c| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 3 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 3 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Nearside Front Footrest insecure |6.2.1a| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Front Front position lamp incorrect colour |1.1.2a| | 3 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 3 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |