| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 45 |
| Rear reflector on motorcycle missing |1.4.1| | 18 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Registration plate lamp issues | 8 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 8 |
| Horn not working |1.7.3a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Registration plate issues | 3 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Sidecar wheel alignment has excessive toe-out |5.3.1a| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Nearside Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Nearside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Centre Front Upper Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Front Vehicle identification number not legible (0.2 (b)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Offside Front Motorcycle structure joining/attachment plate or fastening insecure suspension yoke clamp (6.1.1 (b) (i)) | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Footrest insecure Circlip missing |6.2.1a| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake lever has insufficient reserve travel Brake lever feels spongy.
The lever comes back to the handlebar. |1.1.2 |a|| | 1 |
| Rear reflector on motorcycle dirty and function impaired |1.4.2a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Nearside Motorcycle structure joining/attachment plate or fastening insecure frame (6.1.1 (b) (i)) | 1 |
| Offside Motorcycle structure joining/attachment plate or fastening insecure frame (6.1.1 (b) (i)) | 1 |
| Rear Brake master cylinder insecure (1.1.10 (c)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Nearside Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear All position lamps not working (4.2.1 (a)) | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Direction indicator insecure front o/s |1.5.3b| | 1 |
| Direction indicator not working front o/s |1.5.1c| | 1 |
| Offside Front Throttle control functioning such that safe operation of the motorcycle is adversely affected Not self closing - adjust cables to rectify (6.2.7 (a) (ii)) | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride front spindle pinch bolts |6.2.1h| | 1 |
| Offside Front Footrest insecure bracket broken (6.2.12 (a)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Stop lamp not working Not working when rear brake is applied (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Offside Rear Brake hose damaged and likely to fail rear brake hose rubbing on the rear swinging arm and likely to fail (1.1.12 (a)) | 1 |
| Handlebar retaining device loose |2.2.1 |b| |i|| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Offside Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on replaced bulb |1.1.3a| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |