| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 44 |
| Headlamp aim out of alignment | 32 |
| Steering headbearing has excessive free play |2.2.2| | 23 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 19 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 18 |
| Registration plate issues | 15 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 14 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 14 |
| Rear reflector missing (4.8.2 (a) (ii)) | 12 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Stop lamp remains on when the brake is released |1.3.1e| | 9 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 8 |
| Stop lamp remains on when the brakes are released | 8 |
| Horn not working |1.7.3a| | 8 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 7 |
| Front Brake excessively binding (1.2.1 (f)) | 7 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 7 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 6 |
| Riders seat insecure |6.2.1a| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 6 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 6 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 5 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 5 |
| Registration plate lamp issues | 5 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Stop lamp does not emit a steady light |1.3.1b| | 5 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| 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 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 4 |
| Direction indicators not working |1.5.1c| | 4 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front Brake excessively binding |1.2.1 |f|| | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Front suspension has inadequate damping effect. |2.3.6c| | 4 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Horn not working (7.7 (a)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Front position lamp incorrect colour |1.1.2a| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 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 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Nearside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Stop lamp emits other than a steady red light |1.3.1b| | 3 |
| Headlamp switch faulty |1.2.4| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Position lamp not working (4.2.1 (a)) | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Fuel system component leaking (6.1.3 (b) (i)) | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 3 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Nearside Rear Direction indicator missing |1.5.1a| | 2 |
| Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 2 |
| Front Handlebar deformed |2.1.1b| | 2 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 2 |
| Exhaust silencer insecure |8.1.1 |b| |i|| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Riders seat insecure |6.2.5 |a| |ii|| | 2 |
| Offside Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Horn missing |1.7.1| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake component inadequately mounted (1.1.21 (c)) | 2 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Front Shock absorber has an excessively worn bush (5.3.2 (c)) | 2 |
| Offside Rear Direction indicator missing |1.5.1a| | 2 |
| Front Stop lamp emits other than a steady red light |1.3.1b| | 2 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| All position lamps not working (4.2.1 (a)) | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Exhaust excessively deteriorated |7.1.1a| | 2 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |