| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 19 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Registration plate issues | 7 |
| Drive chain worn to excess |6.2.1e| | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 3 |
| Horn not working |1.7.3a| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 3 |
| Registration plate lamp issues | 3 |
| Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 2 |
| Front wheel bearings have excessive free play (2.3.5b) | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Offside Rear Upper Fairings insecure and likely to impede the steering |2.1.2e| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Stop lamp remains on when the brakes are released | 1 |
| Front All position lamps not working |4.2.1 |a|| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front wheel bearings are excessively rough (2.3.5b) | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake pedal has inadequate reserve travel (3.1.3b) | 1 |
| Inner Front Upper Front wheel bearings have excessive free play (2.3.5b) | 1 |
| Rear Hydraulic brake control feels spongy (3.1.4a) | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front wheel bearings are excessively rough BOTH |2.3.5b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Fuel system component leaking |7.2.1a| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on bulb replaced. |1.1.3a| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear Stop lamp with a multiple light source more than 1/2 not functioning loose connection rearstop light switch (4.3.1 (a) (ii)) | 1 |
| Rear Brake clevis joint insecure |1.1.15 |c|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Exhaust has part of the system missing Exhaust clamp bolt missing |7.1.1a| | 1 |