| Most common failures | No# failures |
|---|
| Registration plate issues | 75 |
| Headlamp aim out of alignment | 24 |
| 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| | 21 |
| Rear reflector on motorcycle missing |1.4.1| | 17 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 9 |
| Horn not working |1.7.3a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside 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|| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Rear Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Horn is not continous or uniform |1.7.3c| | 1 |
| Offside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Outer Rear Upper Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Rear reflector on motorcycle missing Rear reflector fitted at test station. |1.4.1| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| All direction indicators not working 15 amp fuse (4.4.1 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Position lamp not working |4.2.1 |a|| | 1 |
| Offside Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |