| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 39 |
| Registration plate lamp issues | 19 |
| Registration plate issues | 18 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 14 |
| Horn not working |1.7.3a| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 5 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Offside Rear Direction indicator insecure |1.5.3b| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Nearside Front Direction indicator not working |1.5.1c| | 3 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 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 motor bicycle fitted with a standard silencer in average condition |7.1.2| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Roller brake test indicates a binding brake (3.3.A1a) | 2 |
| Horn not working (1.7.3a) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Rear position lamp missing |1.1.1a| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Rear suspension component seized |2.4A2a|ii|| | 1 |
| Rear Shock absorber insecurely attached |5.3.2 |a| |i|| | 1 |
| Rear Suspension component pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Outer Front Lower Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Rear Upper Rear position lamp insecure |1.1.1c| | 1 |
| Rear Upper Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Rear Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 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 Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Horn control not functioning. |1.7.2b| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Front wheel spindle loose |2.3.5a| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear suspension bush has excessive free play Swing Arm |2.4.A2a|i|| | 1 |
| Brake locking device missing Rear caliper pad retaining pin |3.2.A1e| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake fluid reservoir insecurely mounted |3.2.B1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Front position lamp incorrect colour Blue tinted bulb replaced with white coloured bulb |1.1.2a| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Centre Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear mono-shock insecure lower mounting bolt |2.4.B.4| | 1 |
| Centre Front Horn not working |1.7.3a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies rear control |1.3.1a| | 1 |
| Rear Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Upper Motorcycle structure cracked |6.1.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear suspension bearing has excessive free play swing arm has side to side movement |2.4.A2a|i|| | 1 |
| Rear wheel bearings have excessive free play diff has play |2.4.A.2c| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Inner Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Rear Suspension component ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Footrest insecure lefthand rear (6.2.12 (a)) | 1 |
| Rear Stop lamp not working From rear brake control (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Front Brake disc(s) excessively pitted (3.2.A1l) | 1 |
| Offside Front Brake hose leaking fluid (3.2.B4) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Nearside Rear Direction indicators not working (1.5.1c) | 1 |
| Rear Brake disc(s) cracked (3.2.A1g) | 1 |
| Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Brake disc insecure (1.1.14 (a) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak Fork seal (5.3.2 (b)) | 1 |
| Rear Suspension rod attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |