| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 80 |
| Rear reflector on motorcycle missing |1.4.1| | 70 |
| Headlamp aim beam image kick up to the offside |1.6| | 26 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 19 |
| Registration plate issues | 18 |
| Drive chain excessively loose |6.2.1d| | 16 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 14 |
| 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| | 8 |
| Rear reflector missing (4.8.2 (a) (ii)) | 8 |
| Horn not working |1.7.3a| | 7 |
| Drive chain excessively tight |6.2.1d| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 5 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| 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| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Brake locking device missing |3.2.A1e| | 3 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear Drive chain excessively loose |6.2.1d| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 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 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Brake disc|s| cracked |3.2.A1g| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Offside Front Direction indicator insecure |1.5.3b| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Headlamp aim beam image too far to the right |1.6.4| | 2 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Rear brake disc in such a condition that it is seriously weakened | 2 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 2 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 2 |
| Front Brake fluid not visible (1.1.10 (d) (iii)) | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 2 |
| Handlebar restricted in free movement from lock to lock (2.1.4 (c)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |