| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 18 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Steering headbearing has excessive free play |2.2.2| | 5 |
| Horn not working |1.7.3a| | 5 |
| Headlamp insecure |1.2.3b| | 4 |
| Registration plate issues | 4 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Stop lamp remains on when the brakes are released | 3 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Brake hose excessively deteriorated | 3 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 3 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 3 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 3 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 3 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 3 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Headlamp aim not tested (4.1.2 (b)) | 2 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| All direction indicators light intensity significantly reduced (4.4.3 (a)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Rear position lamp adversely affected by the operation of another lamp On with pilot, off with head :| |1.1.3b| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Suspension rod corroded and seriously weakened (5.3.3 (b) (i)) | 1 |
| Fuel cap leaking Fuel cap seal split (6.1.3 (b) (i)) | 1 |
| Suspension arm pin or bush excessively worn Engine swingarm mount to frame. (5.3.4 (a) (i)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Rear Wheel damaged or distorted to the extent that control of the motorcycle is likely to be adversely affected (5.2.2 (c) (ii)) | 1 |
| Rear Brake excessively binding Brake not releasing correctly. (1.2.1 (f)) | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Nearside Brake lever attachment screws loose |3.1.2b| | 1 |
| Front Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Central Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Offside Front Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Central Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear Rear position lamp adversely affected by the operation of another lamp bulb appears to be fitted incorrectly. Brake light on all the time. tail light on with brake operation. |1.1.3b| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Front Brake lever is so short and the brake cannot be readily applied rear brake lever broken and is reduced in length. |3.1.3c| | 1 |
| Front Steering headbearing has excessive free play notchy brgs,centralizes |2.2.2| | 1 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Throttle operating incorrectly REVS TAKING UP FROM TICK OVER AND RACING ON OWN |6.2.7 |a| |i|| | 1 |
| Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Stop lamp showing white light to the rear |4.3.3 |a| |ii|| | 1 |
| Position lamp showing white light to the rear |4.2.3 |a| |ii|| | 1 |
| Fuel tank leaking |6.1.3 |b| |i|| | 1 |
| Front Indicator switch inoperative (4.4.2 (a) (ii)) | 1 |
| Front Throttle control functioning such that safe operation of the motorcycle is adversely affected throttle grip broken could affect throttle control (6.2.7 (a) (ii)) | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Central Rear Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Headlamp not working on main beam no front headlight switch cleaned (4.1.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Front Brake lever insecure brake lever mount loose (1.1.2 (e) (i)) | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Steering linkage locking device missing |2.1.3 |d|| | 1 |
| Front Steering operation fouling on the fuel tank or bodywork on full lock bracket likely to catch in wheel |2.1.4 |b|| | 1 |
| Front position lamp insecure |1.1.1c| | 1 |
| Rear position lamp damaged and function impaired Broken lens and showing white light to rear. |1.1.1b| | 1 |
| Headlamp aim not tested |1.6| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Front Fork yoke insecure |2.2.2 |d| |i|| | 1 |
| Front Brake grabbing severely (1.2.1 (c)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 1 |
| Dipswitch does not extinquish main beam/s, leaving at least 1 dipped beam headlamp |1.2.2b|i|| | 1 |
| Brake caliper insecure |1.1.16 |c| |i|| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicator not working only works on center stand |1.5.1c| | 1 |
| Brake lever has abnormal movement of levers indicating excessive wear or maladjustment Broken mount |1.1.15 |f|| | 1 |
| Front Motorcycle structure has a fracture which is likely to adversely affect braking or steering Mudgaurd could interfere with rotation |6.1.1 |a| |ii|| | 1 |
| Forks excessively deformed |2.2.2 |d| |i|| | 1 |
| Exhaust excessively deteriorated |7.1.1a| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Throttle operating incorrectly throttle stiff to operat |6.2.1f| | 1 |
| Brake lever is damaged and the brake cannot be readily applied Rear |3.1.3c| | 1 |
| Position lamp switch insecure R/H |1.1.4b| | 1 |
| Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Offside Front Direction indicator not working Right hand front indicator in operative |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Front suspension fouling which affects the movement of the front suspension. throttle cable fouling |2.3.6a| | 1 |
| Front position lamp does not illuminate immediately when switched on does not come on in second light switch position |1.1.3a| | 1 |
| Stop lamp adversely affected by the operation of another lamp (4.3.3 (b)) | 1 |