| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 37 |
| Registration plate issues | 22 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 20 |
| Throttle operating incorrectly |6.2.1f| | 11 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 9 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 9 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Horn not working |1.7.3a| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 3 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Offside Front Footrest insecure |6.2.1a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Nearside Front Brake disc|s| cracked |3.2.A1g| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Horn not working (7.7 (a)) | 3 |
| Fuel hose leaking |7.2.1a| | 2 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Headlamp switch insecure |1.2.4| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front Plate brake test indicates a sticking brake |3.3.B1a| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 2 |
| Rear Brake excessively binding (1.2.1 (f)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Rear Brake locking device missing |3.2.A1e| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Indicator tell tale not functioning |1.5.2| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Front Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Offside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Brake component is excessively corroded |3.1.5| | 1 |
| Offside Front Brake component is excessively corroded |3.1.5| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Offside Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Brake pedal insecure |1.1.2 |e| |i|| | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Nearside Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Rear Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Roller brake test No brake control achieves an efficiency of 30% |1.2.2 |a| |i|| | 1 |
| An item not tested |Manual| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Decelerometer brake test indicates a sticking brake |3.3.E1d| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Drive chain excessively tight, so that it is likely to fail |6.1.7 |k| |ii|| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Nearside Front Direction indicator obscured |1.5.1a| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator obscured |1.5.1a| | 1 |
| Offside Rear Direction indicator obscured |1.5.1a| | 1 |
| Front Brake pipe likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Rear Brake component defective due to a deliberate modification which significantly reduces the original strength |3.1.5| | 1 |
| Stop lamp does not illuminate immediately a brake applies On operation of rear brake |1.3.1a| | 1 |
| Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition near side collet hanging out |7.1.2| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Offside Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Centre Front Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear Stop lamp emits other than a steady red light |1.3.1b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Throttle operating incorrectly stiff return |6.2.1f| | 1 |
| Rear Brake hose excessively twisted |3.2.B3a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Offside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Rear Brake pedal insecure (1.1.2 (e) (i)) | 1 |
| Front Brake disc contaminated fork oil (1.1.14 (b)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Lower Forks insecure yolk pinch bolt broken (2.2.2 (d) (i)) | 1 |
| Front Inner Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Brake disc contaminated (1.1.14 (b)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected (6.2.7 (a) (ii)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Shock absorber has a serious fluid leak both (5.3.2 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Chain guard insecure (6.1.7 (i)) | 1 |
| Rear Brake pedal anti-slip provision missing (1.1.2 (c)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Offside Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Offside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Direction indicator obviously incorrectly positioned to near together (4.4.3 (a)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Decelerometer brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Stop lamp not working front control (4.3.1 (a) (ii)) | 1 |