| Most common failures | No# failures |
|---|
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 37 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 26 |
| Rear reflector on motorcycle missing |1.4.1| | 21 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 21 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 17 |
| Headlamp aim out of alignment | 17 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 16 |
| Front wheel bearings have excessive free play |2.3.5b| | 14 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 13 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 10 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 9 |
| Rear reflector on motorcycle obscured |1.4.1| | 8 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 8 |
| Riders seat insecure |6.2.1a| | 7 |
| Stop lamp remains on when the brake is released |1.3.1e| | 6 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Registration plate issues | 6 |
| Headlamp aim beam image kick up to the offside |1.6| | 6 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 6 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 6 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 6 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 5 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 5 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Nearside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 4 |
| Nearside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 4 |
| Offside Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Offside Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Nearside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Offside Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 4 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 4 |
| Horn not working |1.7.3a| | 4 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 4 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 3 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Offside Headlamp aim beam image kick-up is to the offside |1.6.1| | 2 |
| Rear Brake lever insecure |3.1.2a| | 2 |
| Centre Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Nearside Front suspension assembly component excessively corroded. |2.3.1| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Rear Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 2 |
| Roller brake test Neither brake control achieves an efficiency of 25% |3.3.A2b| | 2 |
| Brake hose damaged | 2 |
| Rear Stop lamp affected by the operation of another lamp |1.3.2| | 2 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Rear reflector on motorcycle obscured |1.4.2b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Offside Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Offside Rear Direction indicator insecure |1.5.3b| | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Rear position lamp obscured more than 50% |1.1.1d| | 1 |
| Nearside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Centre Rear reflector on motorcycle obscured |1.4.2b| | 1 |
| Nearside Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Rear Direction indicator insecure |1.5.3b| | 1 |
| Rear Rear position lamp missing |1.1.1a| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Nearside Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| An item not tested |Manual| | 1 |
| Rear Brake lever pivots excessively worn |3.1.3a| | 1 |
| Rear Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Rear Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Nearside Headlamp aim beam image kick up to the offside passed after fitting new headlamp bulb |1.6| | 1 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 1 |
| Rear Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Rear suspension bearing has excessive free play side to side movement at swinging arm bushes |2.4.A2a|i|| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Centre Rear Front mudguard can easily contact the wheel bolt missing |2.3.7| | 1 |
| Centre Rear Rear wheel has a loose wheel stud|s| bolt not tight |4.2.3a| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Rear Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Front Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Fairing insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Headlamp aim not tested |1.6| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Inner Rear Lower Rear wheel insecure |4.2.3b| | 1 |
| Front Headlamp insecure |1.2.3b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Motorcycle structure adversely modified |6.1.1b| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Brake caliper inadequately mounted and braking performance affected no bolts holding it on |1.1.16 |c| |ii|| | 1 |
| Rear Suspension component attachment bracket/mounting likely to fail rear swingarm bolts missing |5.3.3 |b| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Nearside Front Direction indicator incorrect colour |4.4.3 |a|| | 1 |
| Front Fork yoke excessively deformed |2.2.2 |d| |i|| | 1 |
| Forks excessively deformed |2.2.2 |d| |i|| | 1 |
| Front Brake caliper insecure |1.1.16 |c| |i|| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Offside Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Rear Exhaust excessively deteriorated |7.1.1a| | 1 |
| Nearside Rear Brake lever is inoperative |3.1.3c| | 1 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 1 |
| Centre Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Front Brake lever is damaged and the brake cannot be readily applied |3.1.3c| | 1 |
| Offside Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Nearside Rear suspension component excessively bent |2.4.A.1a| | 1 |
| Rear suspension component seized |2.4A2a|ii|| | 1 |
| Front Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear wheel spindle securing nut|s| loose |2.4.A.2b| | 1 |
| Front Handlebar deformed |2.1.1b| | 1 |
| Front Lower Fork yoke deformed |2.1.1b| | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Headlamp main beam affected by the operation of another lamp |1.2.2c| | 1 |
| Upper Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Offside Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Offside Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Rear Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Brake hose leaking fluid |3.2.B4| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Front suspension assembly component excessively corroded. |2.3.1| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Fairings insecure and likely to impede the steering |2.1.2e| | 1 |
| Front Brake lever insecure |3.1.2a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Nearside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Rear shock absorber has inadequate damping effect. both |2.4.A.3b| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Front Upper Direction indicators not working |1.5.1c| | 1 |
| Offside Front Upper Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Rear Upper Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Centre Rear Upper Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Front Brake disc|s| cracked |3.2.A1g| | 1 |
| Nearside Headlamp insecure |1.2.3b| | 1 |
| Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Front Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Front Brake master cylinder severely damaged |3.2.B1b| | 1 |
| Fairings insecure and likely to impede the steering dash board |2.1.2e| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Shock absorber has a serious fluid leak both (5.3.2 (b)) | 1 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Brake disc contaminated in oil (1.1.14 (b)) | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Brake disc contaminated (1.1.14 (b)) | 1 |
| Front Motorcycle structure joining/attachment plate or fastening so insecure that structural rigidity is seriously reduced stand in sinecure (6.1.1 (b) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Stop lamp switch with a delay in operation Front brake light switch inoperative (4.3.2 (a) (ii)) | 1 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |
| Upper Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Offside Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Nearside Rear Direction indicator obviously incorrectly positioned (4.4.3 (a)) | 1 |