| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 174 |
| Parking brake: efficiency below requirements |3.7.B.7| | 165 |
| Rear parking brake recording little or no effort | 86 |
| Windscreen wiper does not clear the windscreen effectively | 62 |
| Rear brake binding | 58 |
| Horn not working |1.6.2a| | 55 |
| Service brake: efficiency below requirements |3.7.B.7| | 48 |
| Registration plate lamp issues | 47 |
| Brakes imbalanced across an axle | 43 |
| Offside Stop lamp not working |1.2.1b| | 32 |
| Nearside Stop lamp not working |1.2.1b| | 28 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 27 |
| Registration plate issues | 27 |
| Offside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 26 |
| Brake pipe excessively corroded | 25 |
| Nearside Rear Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 23 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 20 |
| Nearside Headlamp not working on main beam |1.7.5a| | 19 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 19 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 18 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 18 |
| Offside Headlamp not working on main beam |1.7.5a| | 18 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 18 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 17 |
| Rear reflector on motorcycle missing |1.4.1| | 16 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 16 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 16 |
| Offside Rear Stop lamp not working |1.2.1b| | 15 |
| Nearside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 15 |
| Offside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 15 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 15 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 15 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 15 |
| Nearside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 14 |
| Horn not working |1.7.3a| | 13 |
| Offside Front Suspension component mounting prescribed area is excessively corroded |2.4.A.3| | 13 |
| Nearside Rear Stop lamp not working |1.2.1b| | 13 |
| Rear Exhaust system not adequately supported |7.1.1| | 13 |
| Offside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 13 |
| Offside Front Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 13 |
| Nearside Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 12 |
| Brake hose excessively deteriorated | 12 |
| Parking brake lever has no reserve travel |3.1.6b| | 12 |
| Offside front brake binding |3.7.B.1| | 11 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 11 |
| Steering column movement between the shaft and steering wheel |2.1.2b| | 11 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 11 |
| Rear brake application uneven | 11 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 11 |
| Offside Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 10 |
| Nearside Rear Direction indicators not working |1.4.A.2c| | 10 |
| Direction indicators not working |1.4.A.2c| | 9 |
| Nearside front brake binding |3.7.B.1| | 9 |
| Nearside Steering rack gaiter split |2.2.D.2d| | 9 |
| Nearside Front Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 9 |
| Offside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 9 |
| Steering headbearing has excessive free play |2.2.2| | 9 |
| Offside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 9 |
| Front passenger door cannot be opened from outside the vehicle |6.2.B.1b| | 9 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 8 |
| Offside Front Direction indicator not working |1.4.A.2c| | 8 |
| Steering column top bearing excessively worn |2.1.2c| | 8 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 8 |
| Stop lamp not working |1.2.1b| | 8 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 8 |
| Offside Track rod end ball joint has excessive play |2.2.B.1f| | 8 |
| Driver`s seat insecure |6.2.A.1| | 7 |
| Steering system has excessive free play detected at the steering wheel |steering rack fitted| |2.2.A.1b| | 7 |
| Nearside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 7 |
| Offside Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 7 |
| Nearside Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 7 |
| Offside Steering rack gaiter split |2.2.D.2d| | 7 |
| Offside Front Steering rack gaiter split |2.2.D.2d| | 7 |
| Rear Stop lamp not working |1.2.1b| | 7 |
| Offside Rear Direction indicator not working |1.4.A.2c| | 7 |
| Steering rack insecure |2.2.B.1a| | 7 |
| Offside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 7 |
| Nearside Rear Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 7 |
| Offside Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 7 |
| Direction indicators flashing less than 60 times a minute |1.4.A.2g| | 7 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 7 |
| Nearside Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 7 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 6 |
| Fuel hose leaking |7.2.3| | 6 |
| Rear Mechanical brake component has restricted free movement | 6 |
| Nearside Rear rear brake recording little or no effort |3.7.B.5a| | 6 |
| Front brake application uneven | 6 |
| Offside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 6 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 6 |
| Brake hose has insufficient room to move | 6 |
| Nearside Vehicle structure has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 6 |
| Front Steering headbearing has excessive free play |2.2.2| | 6 |
| Front passenger door cannot be opened from inside the vehicle |6.2.B.1b| | 6 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 6 |
| Nearside Front Direction indicator not working |1.4.A.2c| | 6 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 6 |
| Nearside Front Front wheel bearing rough when rotated |2.5.A.2| | 6 |
| Front Windscreen wiper not operating automatically when switched on |8.2.1b| | 6 |
| Front passenger seat insecure |6.2.3| | 6 |
| Nearside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 6 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 6 |
| Nearside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 6 |
| Offside Front Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 6 |
| Offside Front Headlamp not working on main beam |1.7.5a| | 6 |
| Battery insecure |1.9.1| | 5 |
| Parking brake lever has excessive side play in the pivot and may disengage |3.1.4a| | 5 |
| Nearside Rear wheel bearing has excessive play |2.6.2| | 5 |
| Offside Rear wheel bearing has excessive play |2.6.2| | 5 |
| Brake pedal spongy |3.3.B.1b| | 5 |
| Nearside Front Steering rack gaiter split |2.2.D.2d| | 5 |
| Riders seat insecure |6.2.1a| | 5 |
| Nearside Front front brake binding |3.7.B.1| | 5 |
| Nearside Rear Seat belt anchorage prescribed area is excessively corroded |5.2.6| | 5 |
| All position lamps not working |1.1.A.3b| | 5 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 5 |
| Offside Obligatory mirror missing |8.1.1| | 5 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 5 |
| Steering wheel retaining device insecure |2.1.6| | 5 |
| Nearside Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 5 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 5 |
| Fuel cap/sealing device sealing washer missing |7.2.4c| | 5 |
| Nearside Direction indicators not working |1.4.A.2c| | 5 |
| Nearside Front Suspension arm has excessive play in a pin/bush |2.4.G.2| | 5 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 5 |
| Hazard warning switch faulty |1.4.B.1d| | 5 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 4 |
| Fuel tank leaking |7.2.3| | 4 |
| Offside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 4 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 4 |
| Offside Rear Rear wheel bearing has excessive play |2.6.2| | 4 |
| Nearside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 4 |
| Offside Rear Braking system leaking |3.6.A.1| | 4 |
| Brake pedal creeps down when held under pressure |3.3.B.1a| | 4 |
| Windscreen wiper not operating automatically when switched on |8.2.1b| | 4 |
| Nearside Steering arm has relative movement at its fixings |2.2.B.1h| | 4 |
| Offside Front front brake binding |3.7.B.1| | 4 |
| Drive chain excessively loose |6.2.1d| | 4 |
| Mechanical brake component has restricted free movement | 4 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 4 |
| Nearside Front Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1| | 4 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 4 |
| Offside Front Front wheel bearing rough when rotated |2.5.A.2| | 4 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 4 |
| Nearside Rear Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 4 |
| Offside Front Front wheel bearing has excessive play |2.5.A.3c| | 4 |
| Rear Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 4 |
| Nearside Front Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 4 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 4 |
| Offside Rear Rear position lamp|s| adversely affected by the operation of another lamp |1.1.A.3f| | 4 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 4 |
| Steering column top mounting bracket insecure |2.1.2d| | 4 |
| Offside Rear Suspension spring mounting prescribed area is excessively corroded |2.4.A.3| | 4 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 4 |
| Offside Rear Rear position lamp|s| excessively deteriorated so that it is not visible from a reasonable distance |1.1.A.3d| | 4 |
| Service brake: efficiency below requirements |3.7.C.1a| | 4 |
| Driver`s door cannot be opened from inside the vehicle |6.2.B.1b| | 4 |
| Offside Front Seat belt retracting mechanism defective |5.2.5b| | 4 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 4 |
| Offside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 4 |
| Windscreen washer not working | 4 |
| Nearside Track rod end ball joint has excessive play |2.2.B.1f| | 4 |
| Offside Direction indicators not working |1.4.A.2c| | 4 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 4 |
| Hazard warning lamps not flashing in phase, with ignition on |1.4.B.1f| | 4 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 4 |
| Power steering pipe|s| or hose|s| leaking from a joint |2.3.3b| | 4 |
| Offside Rear Direction indicators not working |1.4.A.2c| | 4 |
| Nearside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 4 |
| Nearside Front Headlamp not working on main beam |1.7.5a| | 4 |
| Offside Body or chassis has excessive corrosion, seriously affecting its strength within 30cm of the body mountings |6.1.B.2| | 4 |
| Offside Front wheel bearing rough when rotated |2.5.A.2| | 3 |
| Fuel pipe leaking |7.2.3| | 3 |
| Offside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Nearside Front Brake pipe inadequately clipped |3.6.B.1| | 3 |
| Horn not working (7.7 (a) (ii)) | 3 |
| Offside Front Driver`s seat insecure |6.2.A.1| | 3 |
| Driver`s seat cannot be secured in the upright position. |6.2.A.2| | 3 |
| Nearside Rear Rear wheel bearing rough when rotated |2.6.1| | 3 |
| Offside Front Brake hose twisted |found during steering lock to lock check| |2.2.D.2b| | 3 |
| Nearside Front All position lamps not working |1.1.A.3b| | 3 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Rear Brake cable locking device insecure |3.5.1l| | 3 |
| Offside Headlamp insecure |1.7.3| | 3 |
| Nearside front brake juddering severely |3.7.A.2b| | 3 |
| Offside front brake juddering severely |3.7.A.2b| | 3 |
| Offside Front Subframe mounting prescribed area is excessively corroded |2.4.A.3| | 3 |
| Position lamp switch faulty |1.1.A.1| | 3 |
| Parking brake lever defective so that it cannot be satisfactorily operated |3.1.3c| | 3 |
| Nearside Front Steering arm has relative movement at its fixings |2.2.B.1h| | 3 |
| Offside Front Steering rack gaiter insecure |2.2.D.2d| | 3 |
| Nearside Rear Braking system leaking |3.6.A.1| | 3 |
| Front Headlamp not working on main beam |1.7.5a| | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Indicator switch insecure |1.4.A.1| | 3 |
| Nearside Front Direction indicators not working |1.4.A.2c| | 3 |
| Fuel system component insecure |7.2.1| | 3 |
| Steering column universal joint has excessive play |2.1.5| | 3 |
| Front Headlamp not working on dipped beam |1.7.5a| | 3 |
| Offside Rear Vehicle structure has excessive corrosion which adversely affects braking or steering |6.1.A.1| | 3 |
| Fuel system component leaking |7.2.3| | 3 |
| Nearside Steering lock stop ineffective |2.1.3| | 3 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 3 |
| Nearside Front wheel bearing rough when rotated |2.5.A.2| | 3 |
| Offside Side repeater not working |1.4.A.2c| | 3 |
| Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 3 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 3 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 3 |
| Brake performance not tested |3.7.A.1| | 3 |
| Nearside Track rod end loose |2.2.B.1d| | 3 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 3 |
| Offside Direction indicator flashing less than 60 times a minute |1.4.A.2g| | 3 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 3 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 3 |
| Handlebar mounting clamp loose |2.1.1a| | 3 |
| Offside Front Direction indicators not working |1.4.A.2c| | 3 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 3 |
| Offside Front brake disc excessively pitted |3.5.1h| | 3 |
| Windscreen has damage | 3 |
| Nearside Front Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c| | 3 |
| Offside Front Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c| | 3 |
| Front suspension assembly component cracked |2.3.1| | 3 |
| Driver`s door cannot be opened from outside the vehicle |6.2.B.1b| | 3 |
| Nearside Front Seat belt locking mechanism does not secure or release |5.2.5a| | 3 |
| Offside Front Seat belt locking mechanism does not secure or release |5.2.5a| | 3 |
| Handlebar mounting excessively deteriorated |flexible type| |2.1.1d| | 3 |
| Nearside Front brake disc excessively pitted |3.5.1h| | 3 |
| Horn not loud enough to be heard by another road user |1.6.2b| | 3 |
| Offside Track rod end ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.2.C.1c| | 3 |