| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 42 |
| Registration plate issues | 20 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 17 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 14 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 13 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 11 |
| Stop lamp remains on when the brake is released |1.3.1e| | 11 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 10 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 9 |
| Headlamp aim beam image kick up to the offside |1.6| | 8 |
| Horn not working |1.7.3a| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 6 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Stop lamp remains on when the brakes are released | 4 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 4 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 4 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 4 |
| Nearside Rear Direction indicators not working |1.5.1c| | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 3 |
| Rear Rear suspension bearing has excessive free play |2.4.A2a|i|| | 3 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 3 |
| Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear Position lamp not working (4.2.1 (a)) | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Front Direction indicator not working |1.5.1c| | 2 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 2 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Footrest missing |6.2.1a| | 2 |
| Offside Front Brake hose which buldges |3.2.B4| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 2 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Horn not working |7.7 |a| |ii|| | 2 |
| 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| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Offside Rear Footrest insecure |6.2.1a| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Rear Seat insecure |6.2.1a| | 2 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Stop lamp remains on when the brake is released from front lever |1.3.1e| | 1 |
| Brake hose damaged | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front Wheel more than one fixing loose |5.2.1 |a| |ii|| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Brake cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Front Lower Brake hose bulging under pressure |1.1.12 |d|| | 1 |
| Nearside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Front Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Brake lining|s| less than 1.5 mm thick |3.2.A1f|i|| | 1 |
| Front Steering linkage has excessive free play |2.2.2| | 1 |
| Rear Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Brake pipe excessively damaged |3.2.B2a| | 1 |
| Rear Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Offside Fuel system component leaking |7.2.1a| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Offside Rear Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear suspension component loose rear hub / final drive mounting excessive play |2.4.A.1a| | 1 |
| Stop lamp remains on when the brake is released Control 1 |1.3.1e| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Nearside Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 1 |
| Position lamp switch does not operate the front and rear position lamps |1.1.4c| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Rear suspension bearing has excessive free play final drive unit |2.4.A2a|i|| | 1 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Offside Rear Lower Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear position lamp adversely affected by the operation of another lamp |1.1.3b| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Headlamp aim not tested |1.6| | 1 |
| Front suspension assembly component loose |2.3.1| | 1 |
| Stop lamp does not illuminate immediately a brake applies not working on front control |1.3.1a| | 1 |
| Front Brake fluid reservoir leaking hydraulic fluid |3.2.B1e| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Brake hose excessively deteriorated | 1 |
| Rear Brake hose which buldges |3.2.B4| | 1 |
| Handlebar mounting clamp loose |2.1.1a| | 1 |
| Central Stop lamp not working when front brake is applied |4.3.1 |a| |ii|| | 1 |
| Central Front Position lamp not working |4.2.1 |a|| | 1 |
| Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Nearside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Lower Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Rear Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Nearside Front Indicator switch insecure |1.5.4| | 1 |
| Nearside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front position lamp does not illuminate immediately when switched on main beam |1.1.3a| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component telelever ball joint |2.3.4| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Shock absorber insecurely attached front shock |5.3.2 |a| |i|| | 1 |
| Offside Front Brake component leaking fluid |3.2.B4| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Front Brake hose leaking |1.1.12 |c|| | 1 |
| Front Brake master cylinder leaking |1.1.10 |b| |ii|| | 1 |
| Direction indicators not working Near side indicators not working |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Brake locking device insecure Front disc excessive wear/movement. Bobbin securing device worn, washers missing. |3.2.A1e| | 1 |
| Offside Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Nearside Front Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Front Throttle operating incorrectly |6.2.1f| | 1 |
| Offside Rear Brake rod excessively damaged |3.2.A1c| | 1 |
| Offside Front Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Inner Steering lock stop missing |2.1.3| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Offside Front Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake lever cannot be released smoothly |3.1.3d| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front Brake disc|s| insecure |3.2.A1g| | 1 |
| Stop lamp not working Rear brake (4.3.1 (a) (ii)) | 1 |
| Shock absorber has an excessively worn bush Front lower shock mount excess movement (5.3.2 (c)) | 1 |
| Wheel bearing has excessive play Excess movement in rear wheel area, possible swingarm bearing or hub bearing (5.1.3 (a) (i)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak Stanchion damaged/worn (5.3.2 (b)) | 1 |
| Throttle operating incorrectly Sticking, not returning. (6.2.7 (a) (i)) | 1 |
| Nearside Front Brake disc contaminated Fork oil. (1.1.14 (b)) | 1 |