| Most common failures | No# failures |
|---|
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 12 |
| Headlamp aim out of alignment | 10 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 8 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 8 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 7 |
| Front Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Riders seat insecure |6.2.1a| | 3 |
| Brake hose excessively deteriorated | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Registration plate issues | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Offside Front Brake disc|s| insecure |3.2.A1g| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Offside Rear Brake hose leaking (1.1.12 (c)) | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Front Front mudguard insecure |2.3.7| | 1 |
| Centre Front Front shock absorber seal failed and leaking oil both right and left fork seals leaking |2.3.3| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Brake cylinder leaking |1.1.16 |b| |i|| | 1 |
| Nearside Front Brake hose excessively stretched |1.1.12 |b| |ii|| | 1 |
| Front Front suspension assembly component loose |2.3.1| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Gradient brake test indicates a sticking brake |3.3.D1c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Offside Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Rear Brake pipe excessively chafed |3.2.B2a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Brake component is fractured |3.1.5| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake pipe inadequately supported |3.2.B2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake |1.3.1a| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Steering linkage has excessive free play |2.2.2| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Leg shield insecure and likely to impede the steering |2.1.2e| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front shock absorber seal failed and leaking oil Both sides |2.3.3| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Headlamp light source and lamp not compatible HID bulb fitted |4.1.4 |c|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen no image |4.1.2 |a|| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Brake disc|s| insecure |3.2.A1g| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Motorcycle structure joining/attachment plate or fastening insecure |6.1.1 |b| |i|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Horn not working |1.7.3a| | 1 |
| Lower Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake hose which buldges |3.2.B4| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Stop lamp does not illuminate immediately a brake applies Rear brake |1.3.1a| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Steering operation fouling on the fuel tank or bodywork on full lock hitting faring on both locks |2.1.4 |b|| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |