| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 54 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 24 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 15 |
| Horn not working |1.7.3a| | 14 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 14 |
| Registration plate issues | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 12 |
| Drive chain excessively loose |6.2.1d| | 11 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 8 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| 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| | 6 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 5 |
| Rear Brake disc|s| cracked |3.2.A1g| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Nearside Front Direction indicator not working |1.5.1c| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Offside Front Direction indicator not working |1.5.1c| | 3 |
| Fuel hose leaking |7.2.1a| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 3 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Offside Steering lock stop ineffective |2.1.3| | 2 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Front Brake excessively binding |1.2.1 |f|| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front Indicator switch insecure |1.5.4| | 2 |
| Nearside Footrest insecure |6.2.1a| | 2 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 2 |
| Nearside Indicator tell tale not functioning |1.5.2| | 2 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Fuel system component leaking (6.1.3 (b) (i)) | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Front Floor brake test indicates a severely juddering brake |3.3C2d.| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Steering linkage locking device ineffective Stop lock (2.1.3 (d)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen rh dip headlight (4.1.2 (a)) | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 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 |
| Steering lock stop ineffective fouling headlight brackets |2.1.3| | 1 |
| Nearside Rear Drive chain excessively tight |6.2.1d| | 1 |
| Stop lamp does not illuminate immediately a brake applies front or rear brake lamp not working |1.3.1a| | 1 |
| Offside Inner Direction indicators not working both front and rear directional indicators r/h
both rear directional indicators insecure |1.5.1c| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Front Brake fluid contaminated |1.8 |a|| | 1 |
| Front Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Nearside Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Rear Brake pipe excessively chafed |3.2.B2a| | 1 |
| Rear Brake hose fouling |3.2.B3b| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Position lamp light intensity significantly reduced |4.2.3 |a| |ii|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Front Stop lamp not working lever |4.3.1 |a| |ii|| | 1 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Nearside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Steering lock stop missing |2.1.3| | 1 |
| Offside Steering lock stop missing |2.1.3| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Throttle operating incorrectly lock to lock (6.2.7 (a) (i)) | 1 |
| Offside Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Offside Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| All position lamps not working (4.2.1 (a)) | 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 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Stop lamp showing white light to the rear |4.3.3 |a| |ii|| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Front Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Exhaust excessively deteriorated |7.1.1a| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Lower Rear mono-shock insecure |2.4.B.4| | 1 |
| Position lamp not working rear (4.2.1 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Horn missing |1.7.1| | 1 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock Bar end just touching fuel tank on right hand lock |2.1.4 |b|| | 1 |
| Brake hose damaged | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Fuel system component leaking offside carb (6.1.3 (b) (i)) | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 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 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |