| Most common failures | No# failures |
|---|
| Rear reflector on motorcycle missing |1.4.1| | 17 |
| Headlamp aim out of alignment | 16 |
| Registration plate issues | 10 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Horn not working |1.7.3a| | 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 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 7 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear Brake disc|s| cracked |3.2.A1g| | 6 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Nearside Front Footrest insecure |6.2.1a| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 4 |
| Offside Front Footrest insecure |6.2.1a| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Offside Handlebar deformed |2.1.1b| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 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 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 3 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Rear suspension component excessively corroded. |2.4.A.1a| | 2 |
| Fuel tank leaking |7.2.1a| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Brake locking device missing |3.2.A1e| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Brake locking device missing |3.2.A1e| | 2 |
| Rear Direction indicator incorrect colour |1.5.1b| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| An item not tested |Manual| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Horn not working |1.7.3a| | 1 |
| Offside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Lower Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Headlamp insecure |1.2.3b| | 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 |
| 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 Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Offside Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies FRONT BRAKE |1.3.1a| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Rear suspension component loose rear stay arm nut and bolt loose |2.4.A.1a| | 1 |
| Chain guard fouling another component |6.2.1c| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Direction indicators flashing more than 120 times per minute all |1.5.1c| | 1 |
| Offside Front Handlebar handgrip missing |2.1.1c| | 1 |
| Steering movement excessively stiff with the wheel raised feels like over tightened head race bearings |2.2.1b| | 1 |
| Headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Brake locking device missing |3.2.A1e| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Nearside Drive chain excessively tight |6.2.1d| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Rear Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Brake reaction bracket insecure |3.2.A1j| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Stop lamp not working not working with front brake controls (4.3.1 (a) (ii)) | 1 |
| Stop lamp not working Front brake (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Brake hose leaking fluid |3.2.B4| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Upper Brake locking device missing |3.2.A1e| | 1 |
| Lower Brake locking device missing |3.2.A1e| | 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 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Brake lever attachment screws loose |3.1.2b| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Offside Rear Brake locking device missing |3.2.A1e| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake hose damaged | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Centre Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |