| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 47 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 17 |
| Registration plate issues | 15 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 12 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 11 |
| Drive chain excessively loose |6.2.1d| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 6 |
| Drive chain worn to excess |6.2.1e| | 5 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Horn not working |1.7.3a| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Drive chain excessively tight |6.2.1d| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 4 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 4 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 4 |
| Throttle operating incorrectly |6.2.1f| | 4 |
| Front Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Brake excessively binding (1.2.1 (f)) | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear wheel bearings are excessively rough |2.4.A.2c| | 2 |
| Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Offside Front Direction indicators not working |1.5.1c| | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Rear Roller brake test indicates brake effort fall disproportional to brake lever or pedal effort |3.3.A1c| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Drive chain worn to excess |6.1.7 |c| |i|| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 2 |
| Handlebar mounting clamp loose |2.1.1a| | 2 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Registration plate lamp issues | 2 |
| Stop lamp remains on when the brakes are released | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling approx 20mm measured at front wheel (2.4 (a)) | 1 |
| Front wheel spindle securing nut locking device insecure |2.3.5a| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Front Shock absorber has a serious fluid leak fork (5.3.2 (b)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Nearside Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Handlebar fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Handlebar so insecure it is likely to become detached |2.2.1 |b| |ii|| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Steering control handlebar movement restricted by taut cables after market led light cable |2.1.2c| | 1 |
| Offside Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Offside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected engine speed increases lock to lock (6.2.7 (a) (ii)) | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Headlamp at least one does not illuminate on main beam bad connection |1.2.2a|ii|| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Brake caliper insecurely mounted and braking performance affected (1.1.16 (c) (ii)) | 1 |
| Front wheel spindle securing nut|s| loose |2.3.5a| | 1 |
| Offside Front Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Floor brake test indicates a severely grabbing brake |3.3.C2d| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Nearside Handlebar retaining device loose |2.2.1 |b| |i|| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort rear disc badly warped. |1.2.1 |e|| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Drive chain worn to excess (6.1.7 (c) (i)) | 1 |
| Front Drive chain sprocket so worn it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Front 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 |
| Drive chain so loose it is likely to fail (6.1.7 (c) (ii)) | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Rear Brake back plate|s| insecure pads delaminating |3.2.A1j| | 1 |
| Stop lamp not working Front brake switch faulty |4.3.1 |a| |ii|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake reaction bracket insecure |3.2.A1j| | 1 |
| Rear Brake component insecure brake hose |1.1.21 |c|| | 1 |
| Horn not working (7.7 (a)) | 1 |
| Offside Rear Footrest insecure (6.2.12 (a)) | 1 |
| Stop lamp not working with rear brake lever |4.3.1 |a| |ii|| | 1 |
| Decelerometer brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Nearside Front Brake component damaged and seriously reduced in strength |3.2.A1| | 1 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Offside Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Footrest missing Both rear pegs missing. (6.2.12 (a)) | 1 |
| Exhaust system insecure Clamp tightened during test. OK. (6.1.2 (a)) | 1 |
| Headlamp not working on main beam or turning off |4.1.1 |a| |ii|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Shock absorber has a serious fluid leak forkseal (5.3.2 (b)) | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| An item not tested |Manual| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Offside Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Front Stop lamp damaged and function impaired front brake light does not work |1.3.3a| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Offside Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Inner Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Brake disc fractured (1.1.14 (a) (ii)) | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Offside Front Brake hose leaking fluid |3.2.B4| | 1 |
| Nearside Exhaust mounting missing |7.1.1c| | 1 |
| Offside Exhaust mounting missing |7.1.1c| | 1 |
| Steering control handlebar movement restricted by taut cables |2.1.2c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Stop lamp emits other than a steady red light goes out with full application |1.3.1b| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Rear Lower Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |