| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 17 |
| Registration plate issues | 12 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Horn not working |1.7.3a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 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 |
| Rear Drive chain sprocket worn to excess |6.1.7 |c| |i|| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.4 |a|| | 1 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Centre Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Headlamp insecure |1.2.3b| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Rear Brake lever insecure |3.1.2a| | 1 |
| Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Brake hose damaged | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Rear Brake lever mounting insecure |3.1.2a| | 1 |
| Nearside Front Handlebar deformed |2.1.1b| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Central Front Position lamp not working (4.2.1 (a)) | 1 |
| Offside Front Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Offside Rear Stop lamp not working no rear brake light operation (4.3.1 (a) (ii)) | 1 |
| Front Position lamp not working x2 (4.2.1 (a)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake disc significantly and obviously worn Rear disc scored from pad failure (1.1.14 (a) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Rear Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |