| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 24 |
| Rear reflector missing (4.8.2 (a) (ii)) | 14 |
| Headlamp aim out of alignment | 10 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 9 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 8 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 7 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 6 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 6 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 5 |
| Front Brake excessively binding (1.2.1 (f)) | 5 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 4 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 4 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 3 |
| Offside Rear Footrest missing (6.2.12 (a)) | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Front Brake disc fractured (1.1.14 (a) (ii)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Rear Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Brake excessively binding brake disc rubbing on caliper mounting bracket (1.2.1 (f)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Suspension arm attachment bracket/mounting insecure swinging arm pivot bolt was loose. (5.3.3 (a) (i)) | 1 |
| Front Brake lever is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Central Rear Lower Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Suspension component pin or bush excessively worn swingarm bushes worn (5.3.4 (a) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Brake disc fractured Cracked (1.1.14 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Footrest missing rear foot rests missing (double set fitted) (6.2.12 (a)) | 1 |
| Upper Fork yoke insecure centre yoke nut loose (2.2.2 (d) (i)) | 1 |
| Rear Brake hose excessively twisted hose too long and getting caught/trapped between moving suspension parts (1.1.12 (b) (ii)) | 1 |
| Rear Footrest missing Pillion footrests missing (6.2.12 (a)) | 1 |
| Rear Brake pipe at imminent risk of failure or fracture excessively tight also rubbing on swing arm (1.1.11 (a)) | 1 |
| Headlamp insecure Lower fixing mount missing (4.1.1 (c)) | 1 |
| Suspension arm pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Rear Brake hose damaged and likely to fail (1.1.12 (a)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Brake performance not tested Brakes are in dangerous condition (1.2.1 (g)) | 1 |
| Rear Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Suspension component pin or bush excessively worn rear shock to swingingarm bush (5.3.4 (a) (i)) | 1 |
| Roller brake test brake efficiency less than 27.5% overall (1.2.2 (a) (ii)) | 1 |
| Exhaust system insecure Rear bracket missing (6.1.2 (a)) | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm bearing/bush (5.3.4 (a) (i)) | 1 |
| Nearside Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Nearside Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Suspension arm pin or bush excessively worn swinging arm bushes (5.3.4 (a) (i)) | 1 |
| Nearside Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake master cylinder leaking (1.1.10 (b) (ii)) | 1 |
| Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Rear Suspension arm pin or bush excessively worn swing arm bearings (5.3.4 (a) (i)) | 1 |
| Drive chain sprocket worn to excess both (6.1.7 (c) (i)) | 1 |
| Shock absorber has a serious fluid leak both front (5.3.2 (b)) | 1 |
| Headlamp incorrect colour blue ring in middle of led bulb (4.1.4 (a)) | 1 |
| Nearside Front Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Brake effort inadequate at a wheel From control one, linked brakes (1.2.1 (a) (i)) | 1 |
| Nearside Rear Direction indicator with a multiple light source more than 1/2 not functioning (4.4.1 (a) (ii)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Stop lamp not working hand control (4.3.1 (a) (ii)) | 1 |
| Offside Rear Brake pedal anti-slip provision loose (1.1.2 (c)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Offside Steering operation fouling on the fuel tank or bodywork on full lock steering stop bent (2.1.4 (b)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Offside Exhaust silencer likely to become detached (8.1.1 (b) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Stop lamp not working brake lever (4.3.1 (a) (ii)) | 1 |
| Rear Drive chain sprocket excessively loose (6.1.7 (c) (i)) | 1 |
| Front Brake excessively binding brake (1.2.1 (f)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Rear Suspension arm pin or bush excessively worn Rear swingarm /front bearings (5.3.4 (a) (i)) | 1 |
| Front Brake disc fractured cracking between slots (1.1.14 (a) (ii)) | 1 |
| Rear Brake disc fractured cracking between slots (1.1.14 (a) (ii)) | 1 |
| Rear Suspension arm pin or bush excessively worn swinging arm bush/pin (5.3.4 (a) (i)) | 1 |
| Motorcycle structure joining/attachment plate or fastening insecure swing arm bearings (6.1.1 (b) (i)) | 1 |
| Rear Drive chain sprocket so loose it is likely to fail bolts missing (6.1.7 (c) (ii)) | 1 |