| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 152 |
| Registration plate lamp issues | 42 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 27 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 26 |
| Registration plate issues | 23 |
| Horn not working |1.7.3a| | 18 |
| Drive chain excessively loose |6.2.1d| | 17 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 16 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 12 |
| Drive chain excessively tight |6.2.1d| | 12 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 12 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 11 |
| Throttle operating incorrectly |6.2.1f| | 10 |
| Rear Brake excessively binding (1.2.1 (f)) | 10 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 9 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Horn not working |7.7 |a| |ii|| | 6 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 6 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Steering headbearing has excessive free play |2.2.2| | 6 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 6 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Horn not working (7.7 (a)) | 5 |
| Rear Brake excessively binding |1.2.1 |f|| | 4 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear Brake disc|s| cracked |3.2.A1g| | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 3 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| 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|| | 2 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 2 |
| Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 2 |
| Offside Front Brake disc contaminated |1.1.14 |b|| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Front Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Brake fluid contaminated (1.8 (a)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 2 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| 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)) | 2 |
| Offside Rear Lower Brake excessively binding (1.2.1 (f)) | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 2 |