| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 89 |
| Registration plate issues | 49 |
| Steering headbearing has excessive free play |2.2.2| | 37 |
| Registration plate lamp issues | 26 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 24 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 24 |
| Drive chain excessively loose |6.2.1d| | 22 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 18 |
| Rear reflector on motorcycle missing |1.4.1| | 15 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 13 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 13 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Throttle operating incorrectly |6.2.1f| | 10 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Drive chain excessively tight |6.2.1d| | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Horn not working |1.7.3a| | 8 |
| Drive chain worn to excess |6.2.1e| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 6 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 6 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Front Brake excessively binding |1.2.1 |f|| | 5 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Handlebar deformed |2.1.1b| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Rear Drive chain excessively loose |6.2.1d| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| 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| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 3 |
| Steering movement excessively notchy with the wheel raised (2.2.1b) | 3 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Steering headbearing has excessive free play (2.2.2) | 2 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Front Throttle operating incorrectly |6.2.1f| | 2 |
| Headlamp incorrect colour |1.2.1| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain excessively loose (6.2.1d) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |