| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 30 |
| Registration plate issues | 29 |
| Headlamp aim beam image kick up to the offside |1.6| | 25 |
| Rear reflector on motorcycle missing |1.4.1| | 25 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Nearside Rear Direction indicator not working |1.5.1c| | 6 |
| Horn not working |1.7.3a| | 5 |
| Rear reflector missing (4.8.2 (a) (ii)) | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Rear reflector on motorcycle missing (1.4.1) | 4 |
| Registration plate lamp issues | 4 |
| Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 4 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| 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| | 3 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 3 |
| Offside Footrest insecure |6.2.1a| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear position lamp missing |1.1.1a| | 2 |
| Nearside Front Direction indicator missing |1.5.1a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition (8.1.1 (a)) | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Brake lever cannot be applied smoothly |3.1.3d| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Direction indicators flashing more than 120 times per minute (1.5.1c) | 1 |
| Exhaust markings indicating not for road use or similar wording (6.1.2 (c)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Engine mounting/bracket excessively loose (6.1.8 (a) (ii)) | 1 |
| Exhaust mounting does not fully support the exhaust system (7.1.1.c) | 1 |
| Throttle operating incorrectly (6.2.1f) | 1 |
| Offside Front Direction indicator not working (1.5.1c) | 1 |
| Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Steering damper ineffective |2.1.2d| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Offside Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Front position lamp missing |1.1.1a| | 1 |
| Front Headlamp missing |1.2.3a| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Engine mounting/bracket missing both front bolts. (6.1.8 (a) (ii)) | 1 |
| Rear Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working off both controls |4.3.1 |a| |ii|| | 1 |
| Front Brake caliper insecure missing R clip |1.1.16 |c| |i|| | 1 |
| Rear Brake clevis joint insecure missing clip |1.1.15 |c|| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Front Direction indicator obscured |1.5.1a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake lever has restricted free movement |1.1.15 |e|| | 1 |
| Outer Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Front Lower Steering headbearing has excessive free play |2.2.2| | 1 |
| Offside Rear Upper 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 |
| Offside Rear Lower Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Centre Rear Rear position lamp missing |1.1.1a| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Offside Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Drive chain excessively loose side to side movement |incorrect chain size fitted to bike| |6.2.1d| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake component worn and seriously reduced in strength |3.2.A1| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Engine mounting/bracket missing |6.1.8 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Rear Front position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Brake lever mounting cracked |3.1.2c| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Rear Direction indicator obscured |1.5.1a| | 1 |
| Offside Rear Direction indicator obscured |1.5.1a| | 1 |
| Offside Front Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Rear shock absorber seal failed and leaking oil incorect damping |2.4.A.1c| | 1 |
| Central Rear Lower Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Steering damper insecure (2.1.4 (d) (i)) | 1 |
| Steering damper in such a condition that the steering action is adversely affected (2.1.4 (d) (ii)) | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Steering operation linkage fouling when handlebars turned from lock to lock (2.1.4 (a)) | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Offside Steering linkage locking device missing (2.1.3 (d)) | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Steering linkage locking device ineffective lock stop broken (2.1.3 (d)) | 1 |
| Central Front Headlamp aim not tested (4.1.2 (b)) | 1 |
| Central Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Central Front Horn not working (7.7 (a) (ii)) | 1 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Nearside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride nut missing from rear drive sprocket |6.2.1h| | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |4.1.2 |a|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |