| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 65 |
| Front Brake excessively binding (1.2.1 (f)) | 21 |
| Brake hose damaged | 20 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 15 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 14 |
| Registration plate issues | 12 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 11 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 10 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 9 |
| Front Brake excessively binding |1.2.1 |f|| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Stop lamp remains on when the brakes are released | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Registration plate lamp issues | 7 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 6 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 6 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 6 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 5 |
| Rear Brake excessively binding (1.2.1 (f)) | 5 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 5 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 5 |
| Headlamp aim not tested (4.1.2 (b)) | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Front mudguard insecure |2.3.7| | 5 |
| Front wheel bearings are excessively rough |2.3.5b| | 5 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Throttle operating incorrectly |6.2.1f| | 5 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 4 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 4 |
| Brake hose excessively deteriorated | 4 |
| Steering lock stop ineffective |2.1.3| | 4 |
| Horn not working |1.7.3a| | 4 |
| Indicator switch defective |1.5.4| | 4 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 4 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Stop lamp not working |4.3.1 |a| |ii|| | 4 |
| Front Brake hose excessively damaged (1.1.12 (b) (ii)) | 3 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 3 |
| Nearside Indicator switch defective |1.5.4| | 3 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 3 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 3 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 2 |
| Front Brake hose damaged and likely to fail (1.1.12 (a)) | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Brake grabbing severely (1.2.1 (c)) | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 2 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Riders seat insecure (6.2.5 (a) (ii)) | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Brake lever not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Rear Brake lever insecure (1.1.2 (e) (i)) | 2 |
| Headlamp aim not tested |4.1.2 |b|| | 2 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Rear Brake lever mounting insecure |3.1.2a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Front Position lamp not working |4.2.1 |a|| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 2 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 2 |