| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 25 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 13 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 9 |
| Headlamp aim beam image kick up to the offside |1.6| | 9 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 8 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Exhaust excessively deteriorated |7.1.1a| | 5 |
| Rear reflector on motorcycle missing |1.4.1| | 5 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Offside Front Direction indicator insecure |1.5.3b| | 3 |
| Horn not working |1.7.3a| | 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 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Nearside Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Nearside Front Direction indicator insecure |1.5.3b| | 2 |
| Offside Front Direction indicator not working |1.5.1c| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 2 |
| Rear mono-shock pivot excessively worn |2.4.B.4| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 2 |
| Centre Front Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Registration plate lamp issues | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Nearside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Centre Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Drive chain horseshoe locking device likely to become detached missing |6.1.7 |j| |ii|| | 1 |
| Handlebar mounting clamp loose Left hand |2.1.1a| | 1 |
| Handlebar mounting clamp loose Right hand |2.1.1a| | 1 |
| Offside Handlebar mounting clamp bolt missing |2.1.1a| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Drive chain worn to excess |6.2.1e| | 1 |
| Centre Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Riders seat insecure |6.2.1a| | 1 |
| Inner Front Lower Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Nearside Rear Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Front Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Nearside Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear position lamp incorrect colour |1.1.2b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Brake pedal is positioned so that the brake cannot be readily applied |3.1.3c| | 1 |
| Centre Rear Upper Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Exhaust is leaking and excessively noisey leaking from down pipes |7.1.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Brake excessively binding |1.2.1 |f|| | 1 |
| Offside Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Shock absorber has negligible damping effect linkage seezed |5.3.2 |b|| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Centre Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Rear Lower Rear suspension component loose |2.4.A.1a| | 1 |
| Offside Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Central Front Upper Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Centre Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected |2.2.2 |f| |ii|| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear Suspension arm pin or bush excessively worn |5.3.4 |a| |i|| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake pipe union leaking fluid |3.2.B4| | 1 |
| Front mudguard insecure |2.3.7| | 1 |
| Rear Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Drive chain sprocket so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Rear Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Centre Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Nearside Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Brake lever excessively damaged |3.2.A1c| | 1 |
| Rear mono-shock pivot seized |2.4.B.4| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Rear suspension component loose |2.4.A.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Front Shock absorber insecurely attached |5.3.2 |a| |i|| | 1 |
| Offside Rear Wheel fixing missing |multiple fixings| |5.2.1 |a| |i|| | 1 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Throttle operating incorrectly Still turns after closed stop. (6.2.7 (a) (i)) | 1 |
| Offside Handlebar retaining device loose (2.2.1 (b) (i)) | 1 |
| Nearside Front Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (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 Lower Suspension component pin or bush excessively worn linkage (5.3.4 (a) (i)) | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Drive chain horseshoe locking device incorrectly fitted split link wrong way (6.1.7 (j) (i)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Central Upper Position lamp adversely affected by the operation of another lamp both position lamps and headlight affected by operation of all indicators (flashing with indicators in operation) (4.2.3 (b)) | 1 |
| Central Rear Lower Suspension component pin or bush excessively worn rear lower suspension link has excessive play in all bushes (5.3.4 (a) (i)) | 1 |
| Central Rear Lower Shock absorber has a serious fluid leak rear suspension damper has excessive fluid leak (5.3.2 (b)) | 1 |
| Central Rear Lower Suspension component corroded and seriously weakened rear suspension general condition is badly corroded and likely to fail (5.3.3 (b) (i)) | 1 |
| Offside Front Lower Brake caliper leaking front brake caliper is leaking fluid (brake reservoir fluid low) (1.1.16 (b) (i)) | 1 |
| Offside Front Upper Stop lamp not working front brake lamp does not illuminate when front brake applied(suspected switch) (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Lower Drive chain excessively loose drive chain excessively loose can pull chain off rear tightest part of sprocket (6.1.7 (c) (i)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Stop lamp not working Front brake switch was not connected. (4.3.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Brake lever has restricted free movement (1.1.15 (e)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Direction indicator not working (4.4.1 (a) (ii)) | 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 |