| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 37 |
| Registration plate issues | 32 |
| Rear reflector on motorcycle missing |1.4.1| | 29 |
| Headlamp aim beam image kick up to the offside |1.6| | 29 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 8 |
| Drive chain excessively loose |6.2.1d| | 8 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 8 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 7 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Rear Wheel spoke excessively loose |4.2.1b| | 7 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Horn missing |1.7.1| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Headlamp incorrect colour |1.2.1| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Rear reflector missing |4.8.2 |a| |ii|| | 4 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Horn not working |1.7.3a| | 4 |
| 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| | 4 |
| Nearside Direction indicators flashing more than 120 times per minute |1.5.1c| | 3 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Indicator switch insecure |1.5.4| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Rear Exhaust has part of the system missing |7.1.1a| | 2 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Front Direction indicator affected by the operation of another lamp |1.5.1c| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 2 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Exhaust mounting missing |7.1.1c| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Registration plate lamp issues | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Central Front Headlamp insecure (4.1.1 (c)) | 2 |
| Central Front Headlamp aim not tested Due to headlamp being insecure (4.1.2 (b)) | 2 |
| Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear reflector on motorcycle does not reflect squarely to the rear |1.4.1| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Front Position lamp switch insecure |1.1.4b| | 1 |
| Nearside Headlamp insecure |1.7.3| | 1 |
| Inner Rear reflector missing |1.5.1a| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Brake pedal mounting cracked . |3.1.2c| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Centre Rear Lower Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Brake performance not tested |3.3| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Plate brake test indicates a severely grabbing brake |3.3.B1b| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Hazard warning lamps inoperative |1.4.B.1b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front wheel spindle loose |2.3.3a| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Nearside Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Offside Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Exhaust mounting missing |7.1.1c| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Offside Front Brake disc contaminated |1.1.14 |b|| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Front Hydraulic brake control creeps under load. |3.1.4a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition baffle in aftermarket tailpipe insecure |7.1.2| | 1 |
| Rear Rear reflector on sidecar missing |1.4.1| | 1 |
| Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Front Lower Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Centre Rear Lower Wheel spoke excessively loose |4.2.1b| | 1 |
| Front Steering lock stop maladjusted |2.1.3| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Offside Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Centre Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Horn is not a constant note |1.7.3c| | 1 |
| Front Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Fuel tank leaking |7.2.1a| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Front Headlamp not working on dipped beam |1.7.5a| | 1 |
| Stop lamp does not illuminate immediately a brake applies hand control |1.3.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Motorcycle structure excessively damaged Front fairing and side fairings sharp edges |6.1.1a| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Direction indicator with a multiple light source more than 1/2 not functioning |4.4.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies front switch |1.3.1a| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Position lamp adversely affected by the operation of another lamp |4.2.3 |b|| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Headlamp switch insecure |1.2.4| | 1 |
| Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 1 |
| Stop lamp missing |1.3.3a| | 1 |
| Front Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Indicator tell tale missing |1.4.A.2a| | 1 |
| Exhaust noise is clearly in excess of that emitted by a similar vehicle fitted with a standard silencer in average condition |7.1.4| | 1 |
| Offside Rear Road wheel bead rim badly distorted |4.2.A.1a| | 1 |
| Centre Rear reflector missing |1.5.1a| | 1 |
| Hazard warning tell tale not working correctly |1.4.B.1e| | 1 |
| Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f| | 1 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 1 |
| Front position lamp|s| not working |1.1.A.3b| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Nearside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock ADJUSTED FREEPLAY (2.1.4) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Nearside Rear Wheel fixing missing (single fixing) (5.2.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear 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 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| All direction indicators adversely affected by the operation of another lamp TWO CLOSE TOGETHER (4.4.3 (b)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Nearside Rear Direction indicator light intensity significantly reduced (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator light intensity significantly reduced (4.4.3 (a)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Front Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect HEADLIGHT TAPED DURING TEST (4.1.2 (c)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Front Brake rod insecure (1.1.15 (c)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Front position lamp does not illuminate immediately when switched on (1.1.3a) | 1 |
| Nearside Front Direction indicators not working (1.5.1c) | 1 |
| Headlamp aim beam image kick up to the offside (1.6) | 1 |
| Front wheel bearings have excessive free play (2.3.5b) | 1 |
| Central Front Upper Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |