| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 96 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 39 |
| Registration plate lamp issues | 37 |
| Drive chain excessively loose |6.2.1d| | 27 |
| Rear reflector on motorcycle missing |1.4.1| | 24 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 18 |
| Registration plate issues | 18 |
| Drive chain worn to excess |6.2.1e| | 17 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Rear reflector missing (4.8.2 (a) (ii)) | 14 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 11 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 11 |
| Drive chain excessively tight |6.2.1d| | 10 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 10 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 9 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 9 |
| Front Brake excessively binding (1.2.1 (f)) | 8 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear Brake excessively binding (1.2.1 (f)) | 7 |
| Handlebar deformed |2.1.1b| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 6 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Front mudguard insecure |2.3.7| | 4 |
| Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Headlamp insecure |1.2.3b| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 3 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 3 |
| Headlamp aim not tested (4.1.2 (b)) | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Brake locking device missing |3.2.A1e| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 3 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 3 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| An item not tested |Manual| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Front position lamp missing |1.1.1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Front Headlamp aim not tested |1.6| | 2 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Footrest missing (6.2.12 (a)) | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 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 system insecure (6.1.2 (a)) | 2 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Headlamp aim not tested |1.6| | 2 |
| Footrest insecure |6.2.1a| | 2 |
| Rear Brake grabbing severely (1.2.1 (c)) | 2 |
| Rear Motorcycle structure has a fracture which is likely to adversely affect braking or steering (6.1.1 (a) (ii)) | 2 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 2 |
| Centre Rear Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |