| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 23 |
| Registration plate issues | 14 |
| Throttle operating incorrectly |6.2.1f| | 13 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 8 |
| Horn not working |1.7.3a| | 8 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Headlamp incorrect colour |1.2.1| | 3 |
| Registration plate lamp issues | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Offside Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Drive chain sprocket carrier worn to excess play in bearing and rubber cushion drive |6.2.1e| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Front Brake grabbing severely |1.2.1 |c|| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Centre Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Throttle operating incorrectly sticks |6.2.1f| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Throttle operating incorrectly holds open on r/h lock |6.2.1f| | 1 |
| Steering movement excessively rough with the wheel raised |2.2.1b| | 1 |
| Offside Rear Lower An item not tested |Manual| | 1 |
| Rear An item not tested |Manual| | 1 |
| Rear Lower An item not tested |Manual| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Centre Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Brake hose excessively deteriorated | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock throttle sticking |2.1.4| | 1 |
| Fuel hose leaking tighten clip |7.2.1a| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Offside Front Upper Brake lever has insufficient reserve travel No reserve Travel |1.1.2 |a|| | 1 |
| Central Steering operation restricted in free movement from lock to lock Steering is heavy and locks up at times , Dangerous |2.1.4 |c|| | 1 |
| Central Steering headbearing has excessive wear or free play Head Bearings Have Excessive Play/Loose |2.2.2 |f| |i|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Nearside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Centre Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Brake pedal mounting insecure |3.1.2a| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Front Direction indicator not working |1.5.1c| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 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 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Brake pedal insecure |3.1.2a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Brake hose leaking fluid |3.2.B4| | 1 |
| Offside Front Brake pipe union leaking fluid |3.2.B4| | 1 |
| Offside Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Front Stop lamp not working brake light inop when operating front brake lever |4.3.1 |a| |ii|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Lower Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Nearside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Front Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Nearside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Brake component insecure pad retaining pin (1.1.21 (c)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Nearside Footrest insecure Rider footrest loose (6.2.12 (a)) | 1 |
| Central Front Position lamp not working (4.2.1 (a)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Steering linkage locking device missing (2.1.3 (d)) | 1 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working via rear brake (4.3.1 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Suspension component pin or bush excessively worn suspension movement seized (5.3.4 (a) (i)) | 1 |
| Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Nearside Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected sidecar (5.2.1 (c) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |