| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 64 |
| Registration plate issues | 29 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 17 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 13 |
| Front wheel bearings have excessive free play |2.3.5b| | 11 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 9 |
| Horn not working |1.7.3a| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 8 |
| 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| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 7 |
| Nearside Rear Direction indicator not working |1.5.1c| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 4 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Exhaust excessively deteriorated |7.1.1a| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Motorcycle structure excessively corroded |6.1.1a| | 2 |
| 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| | 2 |
| 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|| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Nearside Front Brake disc contaminated |1.1.14 |b|| | 2 |
| Offside Front Brake disc contaminated |1.1.14 |b|| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 2 |