| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 33 |
| Registration plate issues | 19 |
| Rear reflector on motorcycle missing |1.4.1| | 12 |
| Horn not working |1.7.3a| | 12 |
| Front wheel bearings have excessive free play |2.3.5b| | 8 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 7 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Front wheel bearings are excessively rough |2.3.5b| | 6 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Registration plate lamp issues | 4 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 4 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 4 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 3 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 2 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Drive chain excessively loose |6.2.1d| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Horn control defective |1.7.2a| | 2 |
| Horn not working (7.7 (a)) | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Stop lamp not working foot |4.3.1 |a| |ii|| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Centre Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear Rear wheel has a loose wheel nut|s| |4.2.3a| | 1 |
| Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Wheel fixing loose |single fixing| Spindle nut loose and split pin missing |5.2.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Motorcycle structure cracked FRAME SHOCK MOUNTING BROKEN |6.1.1a| | 1 |
| Headlamp incorrect colour |1.2.1| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Nearside Rear Chain guard insecure |6.2.1c| | 1 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| 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|| | 1 |
| Rear Direction indicator obviously incorrectly positioned both |4.4.3 |a|| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Headlamp aim projected beam image obviously incorrect hid bulb fitted (4.1.2 (c)) | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen incorrect beam image |1.6.B.1| | 1 |
| Throttle operating incorrectly sticking o/s |6.2.1f| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Front Brake hose excessively twisted |3.2.B3a| | 1 |
| Rear Stop lamp|s| all not working |4.3.1 |a| |iii|| | 1 |
| Front Brake hose excessively damaged (1.1.12 (b) (ii)) | 1 |
| Front Brake component insecure hose (1.1.21 (c)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Steering damper insecure |2.1.2d| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Rear Drive chain sprocket so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Outer Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 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 Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Direction indicators flashing more than 120 times per minute all indicators |1.5.1c| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Front An item not tested |Manual| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Rear Lower Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Throttle operating incorrectly revs up when turning handlebars right |6.2.7 |a| |i|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Brake fluid not visible (1.1.10 (d) (iii)) | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Central Front Steering headbearing has excessive wear or free play steering head bearings loose and rough |2.2.2 |f| |i|| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Headlamp not working on dipped beam (4.1.1 (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 Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front Wheel bearing play so excessive that directional control is impaired (5.1.3 (a) (ii)) | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Brake lever insecure nut loose on pivot |1.1.2 |e| |i|| | 1 |
| Front Stop lamp not working switch inoperative |4.3.1 |a| |ii|| | 1 |
| Front Stop lamp not working switch faulty |4.3.1 |a| |ii|| | 1 |
| Front Steering headbearing excessively stiff or notchy Notchy (2.2.2 (f) (i)) | 1 |
| Nearside Front Steering operation fouling on the fuel tank or bodywork on full lock Catching on Fairing on full lock (2.1.4 (b)) | 1 |
| Offside Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up |5.1.3 |b| |ii|| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |