| Most common failures | No# failures |
|---|
| Rear reflector missing (4.8.2 (a) (ii)) | 41 |
| Headlamp aim out of alignment | 24 |
| Registration plate issues | 24 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 9 |
| Registration plate lamp issues | 8 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 6 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 5 |
| Stop lamp remains on when the brakes are released | 5 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Rear Position lamp not working (4.2.1 (a)) | 4 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 3 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Horn not working (7.7 (a)) | 2 |
| Rear Brake cylinder operating mechanism has excessive travel (1.1.16 (e) (i)) | 1 |
| Rear All direction indicators obviously incorrectly positioned less than 180mm apart (4.4.3 (a)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Brake fluid contaminated (1.8 (a)) | 1 |
| Nearside Steering operation linkage fouling when handlebars turned from lock to lock fouling on tank cover steering stop bent up under frame (2.1.4 (a)) | 1 |
| Rear Direction indicator obviously incorrectly positioned Mandatory direction indicators must have minimum separation distances between the illuminating surfaces of:
solo motorcycles - 240mm at the front and 180mm at the rear (4.4.3 (a)) | 1 |
| Stop lamp adversely affected by the operation of another lamp Half goes out when indicator turned on. (4.3.3 (b)) | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake master cylinder defective but brake still operating Brake efficiency inreases with pumping, suggesting ther is air in the system. (1.1.10 (b) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (Fork Seal Leaking) (5.3.2 (b)) | 1 |
| Central Rear Stop lamp does not illuminate by the operation of both brake controls aftermarket levers fitted that prevent switch from working (4.3.2 (a) (iii)) | 1 |
| Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Rear brake light switch broken (4.3.2 (a) (iii)) | 1 |
| Rear Position lamp adversely affected by the operation of another lamp (4.2.3 (b)) | 1 |
| Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Front Brake caliper operating mechanism has excessive travel (1.1.16 (e) (i)) | 1 |
| Headlamp aim not tested headlamp too insecure to correctly test/ set (4.1.2 (b)) | 1 |
| Central Rear Upper Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected revs sticking on lock to lock (6.2.7 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front All direction indicators obviously incorrectly positioned Front indicators too close together. (4.4.3 (a)) | 1 |
| Brake performance unable to be tested rear brake no effort (1.2.1 (g)) | 1 |
| Rear Brake pedal has insufficient reserve travel spongy foot brake (1.1.2 (a)) | 1 |
| Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |