| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 15 |
| Registration plate issues | 12 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Direction indicators not working |1.5.1c| | 8 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Offside Rear Direction indicators not working |1.5.1c| | 7 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Nearside Rear Direction indicator not working |1.5.1c| | 5 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Nearside Front Direction indicators not working |1.5.1c| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear position lamp incorrect colour |1.1.2b| | 4 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Offside Rear Direction indicator not working |1.5.1c| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Central Front Wheel spindle loose bolt loose (5.2.1 (c) (i)) | 1 |
| Rear Stop lamp not working bulb (4.3.1 (a) (ii)) | 1 |
| Headlamp aim not tested dip beam not working (4.1.2 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Direction indicator not working (1.5.1c) | 1 |
| Offside Front Direction indicator not working (1.5.1c) | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Wheel modified significantly reducing the original strength |4.2.1a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| 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| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Stop lamp showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Stop lamp missing |1.3.3a| | 1 |
| Rear Brake drum|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear wheel has a missing wheel bolt|s| |4.2.3a| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies lever |1.3.1a| | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front position lamp damaged and function impaired |1.1.1b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Brake excessively binding rear brake sticks on. (1.2.1 (f)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |