| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 62 |
| Rear reflector on motorcycle missing |1.4.1| | 34 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 23 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 21 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 16 |
| Registration plate issues | 15 |
| Nearside Front Direction indicator not working |1.5.1c| | 14 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Offside Front Direction indicator not working |1.5.1c| | 11 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 11 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Offside Front Direction indicators not working |1.5.1c| | 8 |
| Stop lamp remains on when the brake is released |1.3.1e| | 7 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Registration plate lamp issues | 6 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Nearside Front Direction indicators not working |1.5.1c| | 5 |
| Indicator tell tale not functioning |1.5.2| | 5 |
| Front position lamp missing |1.1.1a| | 4 |
| Rear reflector missing (4.8.2 (a) (ii)) | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Steering lock stop maladjusted |2.1.3| | 3 |
| Front Position lamp not working (4.2.1 (a)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Steering headbearing has excessive free play |2.2.2| | 3 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear wheel spindle loose |2.4.A.2b| | 2 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Nearside Front Direction indicator missing |1.5.1a| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Horn not working |1.7.3a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Nearside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Front Brake lever insecure (1.1.2 (e) (i)) | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Offside Rear Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Steering operation restricted in free movement from lock to lock Clutch hose is restricting movement (2.1.4 (c)) | 1 |
| Nearside Rear Exhaust has a major leak of exhaust gases Header pipe leaking - rear cylinder (6.1.2 (a)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Central Rear Suspension arm pin or bush excessively worn Rear linkage has excessive free-play (5.3.4 (a) (i)) | 1 |
| Rear Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Position lamp not working Low Beam (4.2.1 (a)) | 1 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Brake performance not tested (1.2.1 (g)) | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Front Upper Brake lever cracked |3.1.2c| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Footrest missing |6.2.1a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride sprocket carrier bolts won/ loose |6.2.1h| | 1 |
| Stop lamp does not illuminate immediately a brake applies brake light doesn`t work off the front lever |1.3.1a| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies control |1.3.1a| | 1 |
| Nearside Position lamp switch insecure |1.1.4b| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Brake lever has abnormal movement of levers indicating excessive wear or maladjustment (1.1.15 (f)) | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake cylinder has no reserve travel and braking performance affected |1.1.16 |e| |ii|| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Steering headbearing has excessive wear or free play very knotchy and drops in on several positions |2.2.2 |f| |i|| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Fork yoke cracked |2.1.1b| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 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 |
| Drive chain excessively tight |6.1.7 |k| |i|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Nearside Handlebar fouling on the fuel tank or bodywork on full lock |2.1.4 |b|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Rear brake (4.3.2 (a) (iii)) | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Nearside Front Footrest insecure (6.2.12 (a)) | 1 |
| Offside Front Footrest insecure (6.2.12 (a)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Rear Brake pedal has insufficient reserve travel Hits stop (1.1.2 (a)) | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Stop lamp does not illuminate immediately a brake applies brake |1.3.1a| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp does not illuminate immediately a brake applies Does not work on front control |1.3.1a| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Brake master cylinder has a seized master cylinder pivot. |3.2.B5| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Centre Front Upper All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Rear Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Exhaust is leaking and excessively noisey from front pipe |7.1.1b| | 1 |
| 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| | 1 |
| Seat insecure |6.2.1a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Central Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Rear Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Central Rear Stop lamp showing white light to the rear crack in lens |4.3.3 |a| |ii|| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake lever insecure |1.1.2 |e| |i|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Suspension attachment bracket/mounting insecure (5.3.3 (a) (i)) | 1 |
| Front Exhaust is leaking and excessively noisey pipe blowing |7.1.1b| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Offside Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Rear reflector defective or damaged by more than 50% of the reflecting surface |4.8.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| An item not tested |Manual| | 1 |
| Offside Front Direction indicator not working earth wire disconnected |4.4.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Brake pedal has insufficient reserve travel Reaching stop. (1.1.2 (a)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |