| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Registration plate issues | 16 |
| Headlamp aim out of alignment | 12 |
| Front wheel bearings are excessively rough |2.3.5b| | 10 |
| Front wheel bearings have excessive free play |2.3.5b| | 9 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| 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| | 3 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Front Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Stop lamp not working rear brake |4.3.1 |a| |ii|| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Headlamp lens seriously defective lens loos |4.1.1 |b| |ii|| | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front Direction indicator insecure |1.5.3b| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Drive belt so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Wheel bearing so rough it is likely to overheat or break up front |5.1.3 |b| |ii|| | 1 |
| Offside Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Headlamp aim projected beam image obviously incorrect No beam pattern due to poor headlamp (4.1.2 (c)) | 1 |
| Headlamp incorrect colour Showing Blue light (4.1.4 (a)) | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Drive belt guard fouling another component |6.2.1c| | 1 |
| Drive belt guard insecure |6.2.1c| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Offside Front Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Stop lamp does not illuminate immediately a brake applies front and rear control |1.3.1a| | 1 |
| Exhaust is leaking and excessively noisey EXHAUST BLOWING EXCESSIVELY |7.1.1b| | 1 |
| Stop lamp damaged and function impaired FRONT BRAKE LIGHT SWITCH NOT WORKING |1.3.3a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Headlamp insecure |1.2.3b| | 1 |