| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 14 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Registration plate issues | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front 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 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Wheel spoke excessively loose |4.2.1b| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Brake hose leaking fluid |3.2.B4| | 2 |
| Rear Position lamp not working |4.2.1 |a|| | 2 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Nearside Steering lock stop missing |2.1.3| | 2 |
| Front mudguard insecure |2.3.7| | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Brake hose excessively deteriorated | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Horn not working |1.7.3a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up |5.1.3 |a| |ii|| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Lower Exhaust mounting missing |7.1.1c| | 1 |
| Offside Brake pipe inadequately supported |3.2.B2b| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake hose damaged and likely to fail Corrosion on ferrule damaging rubber hose. |1.1.12 |a|| | 1 |
| Rear Brake hose damaged and likely to fail Corrosion on ferrule causing damage to rubber hose. |1.1.12 |a|| | 1 |
| Rear All direction indicators obviously incorrectly positioned Indicators below minimum distance apart. |4.4.3 |a|| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear position lamp missing |1.1.1a| | 1 |
| Rear Brake hose which buldges |3.2.B4| | 1 |
| Offside Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear suspension bearing has excessive free play SHAFT/HUB |2.4.A2a|i|| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Front suspension assembly component loose wishbone ball joint loose or play |2.3.1| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Offside Front Brake hose leaking |1.1.12 |c|| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Offside Front Steering lock stop missing |2.1.3| | 1 |
| Front Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Brake performance not tested |3.3| | 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 |
| Centre Lower Front suspension assembly component loose |2.3.1| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| 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| | 1 |
| Rear Exhaust system insecure (6.1.2 (a)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |