| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 32 |
| Registration plate issues | 20 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 7 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Drive chain excessively loose |6.2.1d| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Drive chain excessively tight |6.2.1d| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Registration plate lamp issues | 4 |
| Drive chain worn to excess |6.2.1e| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 2 |
| Rear Drive chain excessively loose |6.2.1d| | 2 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Brake excessively binding |1.2.1 |f|| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 2 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| Rear reflector missing |4.8.2 |a| |ii|| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front position lamp incorrect colour |1.1.2a| | 2 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Rear reflector missing (4.8.2 (a) (ii)) | 1 |
| Front Stop lamp not working adjust front switch (4.3.1 (a) (ii)) | 1 |
| Throttle operating incorrectly sticking in l/h lock |6.2.1f| | 1 |
| Fuel cap mounting flange/sealing method defective missing bolt |7.2.2c| | 1 |
| Nearside Front Position lamp not working side light led not working (4.2.1 (a)) | 1 |
| Offside Front Position lamp not working side light led flickering (4.2.1 (a)) | 1 |
| Nearside Front Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Rear Brake clevis joint insecure (1.1.15 (c)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced Top engine mounting bolts missing... 2off (6.1.1 (b) (ii)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Position lamp not working (4.2.1 (a)) | 1 |
| Rear position lamp adversely affected by the operation of another lamp |Built in Indicators to Rear Position Lamp| |1.1.3b| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Brake pedal is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front Direction indicator insecure |1.5.3b| | 1 |
| Front Handlebar deformed to the extent that steering is affected (2.2.1 (c) (ii)) | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Motorcycle structure is fractured and structural rigidity is significantly reduced footrest mounting plate |6.1.1 |a| |i|| | 1 |
| Front shock absorber seal failed and leaking oil BOTH |2.3.3| | 1 |
| Offside Front Stop lamp does not emit a steady light Brake lever |1.3.1b| | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Footrest missing seized |6.2.1a| | 1 |
| Throttle operating incorrectly sticking |6.2.1f| | 1 |
| Rear Footrest missing both n/s and o/s rear footrests missing when dual seat fitted (6.2.12 (a)) | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 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 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake rod insecure |1.1.15 |c|| | 1 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on Blown bulb replaced |1.1.3a| | 1 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Rear Motorcycle structure is fractured and structural rigidity is significantly reduced REAR FOOT PEG BRACKET CRACKED. |6.1.1 |a| |i|| | 1 |
| Central Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Nearside Rear Drive chain excessively tight (6.1.7 (k) (i)) | 1 |
| Nearside Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Brake lever insecure |3.1.2a| | 1 |
| Rear Chain guard insecure |6.2.1c| | 1 |
| Steering headbearing excessively stiff or notchy |2.2.2 |f| |i|| | 1 |
| Throttle operating incorrectly sticking on full lock |6.2.7 |a| |i|| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Stop lamp not working front brake control |4.3.1 |a| |ii|| | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |
| Central Rear Upper Stop lamp does not illuminate immediately a brake applies Front brake switch faulty |1.3.1a| | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Front Drive chain worn to excess |6.2.1e| | 1 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Brake locking device insecure Rear brake master cyl adj locknut |3.2.A1e| | 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 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Rear Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Rear Drive chain so worn it is likely to fail links siezed (6.1.7 (c) (ii)) | 1 |
| Centre Front Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies Rear Brake Lever |1.3.1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Shock absorber has a serious fluid leak Both legs (5.3.2 (b)) | 1 |
| Rear Brake grabbing severely (1.2.1 (c)) | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Horn not working |1.7.3a| | 1 |
| Steering lock stop ineffective |2.1.3| | 1 |
| Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Front Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Front Brake lever pivots excessively worn |3.1.3a| | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Rear Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp light source and lamp not compatible |4.1.4 |c|| | 1 |
| Steering movement excessively `notchy` with the wheel raised At centre position |2.2.1b| | 1 |
| Rear Position lamp adversely affected by the operation of another lamp |4.2.3 |b|| | 1 |
| Stop lamp not working STOP LAMP NOT WORKING WHEN FRONT BRAKE LEVER IS ACTIVATED (4.3.1 (a) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Stop lamp does not illuminate immediately a brake applies Brake light does not illuminate when "front" brake is applied |1.3.1a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Exhaust is leaking and excessively noisey headers |7.1.1b| | 1 |
| Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Drive chain so loose it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Drive chain worn to excess |6.1.7 |c| |i|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Rear Upper Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |