| Most common failures | No# failures |
|---|
| Registration plate issues | 60 |
| Headlamp aim out of alignment | 29 |
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 10 |
| Rear reflector missing (4.8.2 (a) (ii)) | 10 |
| Stop lamp remains on when the brakes are released | 9 |
| 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| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 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 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Registration plate lamp issues | 2 |
| Horn not working |1.7.3a| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Horn sound not in accordance with requirements (7.7 (c)) | 2 |
| Stop lamp not working both |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Offside Rear Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Rear Brake indicates excessive fluctuation of brake effort warped disc (1.2.1 (e)) | 1 |
| Central Rear Stop lamp not working off rear brake only (4.3.1 (a) (ii)) | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned Mandatory direction indicators must have minimum separation distances between the illuminating surfaces of:
solo motorcycles - 240mm at the front and 180mm at the rear
motorcycle combinations - 400mm at both front and rear (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator obviously incorrectly positioned Mandatory direction indicators must have minimum separation distances between the illuminating surfaces of:
solo motorcycles - 240mm at the front and 180mm at the rear
motorcycle combinations - 400mm at both front and rear (4.4.3 (a)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Fuel tank leaking |6.1.3 |b| |i|| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Stop lamp not working From rear control |4.3.1 |a| |ii|| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected rear brake pedal holds brake on when pedal is released (1.1.2 (b) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Rear Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Offside Brake pedal anti-slip provision missing pedal rubber missing (1.1.2 (c)) | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Stop lamp emits other than a steady red light (1.3.1b) | 1 |
| Direction indicators affected by the operation of another lamp (1.5.1c) | 1 |
| Stop lamp remains on when the brake is released (1.3.1e) | 1 |
| Offside Rear Direction indicator obscured Due to swing arm bad obscured view of turn signal from rear |1.5.1a| | 1 |
| Front Brake lever mounting insecure |3.1.2a| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Central Front Upper Direction indicator obviously incorrectly positioned Both Front Indicators Are To Close 120 mm separation Min 240 mm (4.4.3 (a)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Rear Stop lamp not working rear brake (4.3.1 (a) (ii)) | 1 |
| Rear Brake caliper inadequately mounted insecure on bottom mounting bush (1.1.16 (c) (i)) | 1 |
| Brake caliper inadequately mounted one rubber mount is insecure (1.1.16 (c) (i)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Drive belt guard insecure (6.1.7 (i)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Central Rear Rear reflector missing reflector missing |4.8.2 |a| |ii|| | 1 |
| Nearside Rear Drive belt guard insecure |6.1.7 |i|| | 1 |
| Rear 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 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Front Upper Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| All direction indicators incorrect colour Showing "white" |4.4.3 |a|| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Footrest missing |6.2.12 |a|| | 1 |