| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 38 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 19 |
| Drive chain excessively loose |6.2.1d| | 16 |
| Registration plate issues | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| 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 |
| Rear reflector on motorcycle missing |1.4.1| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 4 |
| Registration plate lamp issues | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Offside Front Direction indicator insecure |1.5.3b| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Handlebar deformed |2.1.1b| | 3 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Nearside Front Footrest insecure |6.2.1a| | 2 |
| Front wheel bearings have excessive free play |2.3.5b| | 2 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Nearside Rear Direction indicators not working |1.5.1c| | 2 |
| Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Direction indicators not working |1.5.1c| | 2 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 2 |
| Rear Drive chain excessively tight |6.2.1d| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp insecure headlight lens insecure |4.1.1 |c|| | 1 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Rear Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Nearside Headlamp insecure |1.2.3b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Offside Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Rear Lower Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Nearside Front Headlamp deteriorated and function impaired VERY DIM |1.2.3a| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Centre Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front Brake hose excessively twisted (1.1.12 (b) (ii)) | 1 |
| Rear Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Front Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Exhaust has a major leak of exhaust gases Leaking from collector |6.1.2 |a|| | 1 |
| Footrest missing R/H passenger |6.2.12 |a|| | 1 |
| Rear Stop lamp not working with foot pedal (4.3.1 (a) (ii)) | 1 |
| Stop lamp remains on when the brakes are released | 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 |
| Offside Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Rear Footrest missing Pillion foot rests missing (6.2.12 (a)) | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Position lamp not working dipped beam (4.2.1 (a)) | 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 |
| Steering headbearing has excessive free play head stock bearings adjusted |2.2.2| | 1 |
| Nearside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Headlamp insecure Dipped beam bulb insecure (4.1.1 (c)) | 1 |
| Brake excessively binding Rear brake (1.2.1 (f)) | 1 |
| Front Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake cylinder severely corroded |3.2.B1b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Nearside Front Headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Nearside Rear Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Offside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Stop lamp not working Front lever (4.3.1 (a) (ii)) | 1 |
| Offside Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Offside Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Centre Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Offside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies front operated |1.3.1a| | 1 |
| Forks fractured (2.2.2 (d) (i)) | 1 |
| Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front Brake performance not tested |3.3| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Rear Rear suspension fouling which affects the movement of the rear suspension |2.4.A.3a| | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Horn not working (7.7 (a)) | 1 |
| Direction indicator adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| All direction indicators obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Brake component leaking fluid |3.2.B4| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front wheel spindle securing nut locking device missing |2.3.5a| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Handlebar deformed |2.1.1b| | 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 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp not working foot control (4.3.1 (a) (ii)) | 1 |
| Rear Direction indicator obviously incorrectly positioned intergrated in tail lamp with no spacing , replaced with individual units with correct spacing (4.4.3 (a)) | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| 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 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Offside Front Brake fluid reservoir fluid level significantly below minimum level (1.1.10 (d) (ii)) | 1 |
| Front Wheel excessively distorted (5.2.2 (c) (i)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Offside Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |