| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 23 |
| Registration plate issues | 22 |
| Rear reflector missing (4.8.2 (a) (ii)) | 19 |
| Registration plate lamp issues | 18 |
| Rear reflector on motorcycle missing |1.4.1| | 17 |
| Drive chain excessively loose |6.2.1d| | 10 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 7 |
| Front Position lamp not working (4.2.1 (a)) | 6 |
| Rear reflector missing |4.8.2 |a| |ii|| | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 5 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 5 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 4 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 4 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 3 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 3 |
| Front Position lamp not working |4.2.1 |a|| | 3 |
| Drive chain worn to excess |6.2.1e| | 3 |
| Horn not working (7.7 (a)) | 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 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 3 |
| 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)) | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Rear Brake grabbing severely (1.2.1 (c)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 2 |
| Throttle operating incorrectly |6.2.1f| | 2 |
| Front Horn not working (7.7 (a) (ii)) | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 2 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 2 |
| Horn not working (7.7 (a) (ii)) | 2 |
| Front Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Stop lamp does not illuminate by the operation of both brake controls Front brake operated. (4.3.2 (a) (iii)) | 1 |
| Exhaust has a major leak of exhaust gases EGR Pipe un attatched (6.1.2 (a)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Dipswitch does not operate immediately when selected on main beam |4.1.3 |b|| | 1 |
| Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Rear Wheel spindle locking device ineffective Rear Axle Nut has no Split Pin fitted. (5.2.1 (d)) | 1 |
| Brake lever has insufficient reserve travel mirror bracket restricting full movement (1.1.2 (a)) | 1 |
| Rear Wheel fixing missing (single fixing) split pin (5.2.1 (a) (ii)) | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Footrest insecure all |6.2.1a| | 1 |
| Brake pedal mounting insecure |3.1.2a| | 1 |
| Rear Stop lamp not working brake |4.3.1 |a| |ii|| | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Offside Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Fuel cap leaking Seal is split (6.1.3 (b) (i)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking handle bars loose (6.1.1c) | 1 |
| Rear Footrest missing (6.2.12 (a)) | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Exhaust system insecure |6.1.2 |a|| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Stop lamp does not illuminate immediately a brake applies rear control |1.3.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Front Stop lamp light intensity significantly reduced (4.3.3 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Stop lamp showing white light to the rear (4.3.3 (a) (ii)) | 1 |
| Throttle operating incorrectly STICKING ON (6.2.7 (a) (i)) | 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 |
| Front Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Nearside Front Forks excessively deformed (2.2.2 (d) (i)) | 1 |
| Offside Brake pedal is positioned so that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Rear Brake cylinder insecure securing bolt missing (1.1.16 (c) (i)) | 1 |
| Nearside Footrest insecure (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Front Stop lamp not working Switch not connected. (4.3.1 (a) (ii)) | 1 |
| Clutch lever positioned so it cannot be readily operated Bar end mirror restricting operation. (6.2.7 (b)) | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Horn not working loose wire fixed (7.7 (a)) | 1 |
| Front Headlamp not working on dipped beam bulb replaced (4.1.1 (a) (ii)) | 1 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Motorcycle structure corroded to the extent that the rigidity of the assembly is significantly reduced swing arm (6.1.1 (c) (i)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls Foot brake (4.3.2 (a) (iii)) | 1 |
| Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp not working front brake stop light (4.3.1 (a) (ii)) | 1 |
| Throttle operating incorrectly sticking badly |6.2.1f| | 1 |
| Nearside Handlebar deformed to the extent that steering is affected |2.2.1 |c| |ii|| | 1 |
| Steering operation restricted in free movement from lock to lock |2.1.4 |c|| | 1 |
| Offside Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Front Headlamp aim unable to be tested (4.1.2 (b)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Brake disc significantly and obviously worn both |1.1.14 |a| |i|| | 1 |
| Rear 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 |
| Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Steering linkage locking device ineffective (2.1.3 (d)) | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Drive chain horseshoe locking device likely to become detached missing (6.1.7 (j) (ii)) | 1 |
| Offside Rear Footrest insecure E clip missing from secure pin |6.2.1a| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Offside Front Horn not working (7.7 (a)) | 1 |
| Central Rear Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Nearside Front Position lamp not working (4.2.1 (a)) | 1 |
| Front Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Central Rear Stop lamp not working FRONT BRAKE LEVER SWITCH (4.3.1 (a) (ii)) | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Wheel spindle locking device missing (5.2.1 (d)) | 1 |
| Offside Rear Direction indicator missing (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Position lamp not working both side lights not working |4.2.1 |a|| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake pedal pivot excessively worn (1.1.1 (b)) | 1 |
| Stop lamp not working with front brake (4.3.1 (a) (ii)) | 1 |
| Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Drive chain sprocket worn to excess (6.1.7 (c) (i)) | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Drive chain excessively tight |6.2.1d| | 1 |
| Offside Front Upper Position lamp not working |4.2.1 |a|| | 1 |
| Central Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Central Rear Stop lamp switch with a delay in operation |4.3.2 |a| |ii|| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Position lamp not working (4.2.1 (a)) | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Stop lamp emits other than a steady red light (4.3.3 (a) (ii)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Dipswitch does not operate immediately when selected on main beam (4.1.3 (b)) | 1 |
| Offside Rear Upper Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Drive chain worn to excess Has seized links |6.2.1e| | 1 |
| Clutch lever shortened so it cannot be readily operated (6.2.7 (b)) | 1 |
| Drive chain so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Offside Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |
| Nearside Rear Lower Drive chain excessively loose |6.2.1d| | 1 |
| Central Front position lamp incorrect colour |1.1.2a| | 1 |
| Central Front Position lamp not working |4.2.1 |a|| | 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 |
| Footrest missing rear left hand |6.2.1a| | 1 |
| Central Front Position lamp not working (4.2.1 (a)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Nearside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Footrest insecure near side riders footpeg mount loose. |6.2.1a| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Rear Footrest missing left (siezed) (6.2.12 (a)) | 1 |
| Fuel cap ineffective unable to open for inspection (6.1.3 (b) (i)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Offside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected full right lock throttle doesnt return (6.2.7 (a) (ii)) | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |