| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 22 |
| Headlamp aim out of alignment | 21 |
| Nearside Stop lamp not working |1.2.1b| | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 10 |
| Windscreen wiper does not clear the windscreen effectively | 10 |
| Registration plate issues | 9 |
| Rear brake binding | 9 |
| Offside Stop lamp not working |1.2.1b| | 8 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 7 |
| Nearside Front coil spring broken |2.4.C.1a| | 6 |
| Offside Front coil spring broken |2.4.C.1a| | 5 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 5 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 4 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 4 |
| Offside Front constant velocity joint gaiter insecure to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 4 |
| Supplementary Restraint System warning lamp indicates a fault |5.4.2| | 4 |
| Exhaust Lambda reading after 2nd fast idle outside specified limits (8.2.1.2 (c)) | 4 |
| Offside Front constant velocity joint is insecure |2.5.C.1b| | 3 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 3 |
| Exhaust system not adequately supported |7.1.1| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 3 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 3 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 3 |
| Nearside Rear Stop lamp not working |1.2.1b| | 3 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 3 |
| Nearside Rear coil spring broken |2.4.C.1a| | 3 |
| Offside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 3 |
| Nearside Front Position lamp not working (4.2.1 (a) (ii)) | 3 |
| Offside Rear Coil spring fractured or broken |5.3.1 |b| |i|| | 2 |
| Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt |6.1.7 |g| |ii|| | 2 |
| Offside Front Front constant velocity joint is insecure |2.5.C.1b| | 2 |
| Front brake disc in such a condition that it is seriously weakened | 2 |
| Rear Exhaust system not adequately supported |7.1.1| | 2 |
| Horn not working |1.7.3a| | 2 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Offside Front Position lamp not working |4.2.1 |a|| | 2 |
| Nearside Front Lower Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 2 |
| Rear position lamp incorrect colour |1.1.2b| | 2 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Nearside Front Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 2 |
| Offside Front Front constant velocity joint gaiter insecure to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 2 |
| Nearside Front Front constant velocity joint is insecure |2.5.C.1b| | 2 |
| Nearside Front Track rod end ball joint has excessive play |2.2.B.1f| | 2 |
| Offside Outer Front constant velocity joint gaiter insecure to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 2 |
| Nearside Rear position lamp|s| not working |1.1.A.3b| | 2 |
| Front Exhaust has a major leak of exhaust gases |7.1.2| | 2 |
| Offside Rear position lamp|s| not working |1.1.A.3b| | 2 |
| Offside Rear Stop lamp not working |1.2.1b| | 2 |
| Windscreen has damage | 2 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 2 |
| Exhaust emissions hydrocarbon content after 2nd fast idle excessive |7.3.D.3| | 2 |
| Offside Front Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 2 |
| Brakes imbalanced across an axle | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 2 |
| Nearside Front Suspension arm has excessive play in a ball joint |2.4.G.2| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Engine MIL inoperative or indicates a malfunction (8.2.1.2 (h)) | 2 |
| Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 2 |
| Front Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Brake pipe excessively corroded | 2 |
| Nearside Front Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Nearside Front constant velocity joint gaiter split |2.5.C.1a| | 1 |
| Fuel cap sealing washer missing |7.2.2c| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Nearside Front 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 |
| Nearside Rear 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 |
| Riders seat insecure |6.2.1a| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Offside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 1 |
| Nearside Rear coil spring incomplete |2.4.C.1a| | 1 |
| Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt |6.1.7 |g| |ii|| | 1 |
| Rear Exhaust system insecure mount |6.1.2 |a|| | 1 |
| Nearside Outer Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |
| Offside Rear Direction indicator not working |1.5.1c| | 1 |
| Nearside Rear wheel bearing rough when rotated |2.6.1| | 1 |
| Horn control not functioning. |1.7.2b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Rear Drive chain excessively loose |6.2.1d| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Rear Drive chain worn to excess |6.2.1e| | 1 |
| Offside Front Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Nearside Front Position lamp not working |4.2.1 |a|| | 1 |
| Offside Front Driver`s view of the road through the swept area of the windscreen materially affected by an obstruction |3.1 |a| |ii|| | 1 |
| Nearside Front Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Nearside Rear Rear wheel bearing rough when rotated |2.6.1| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Front wheel insecure |4.2.3b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Offside Front Direction indicator not working |1.5.1c| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Nearside Front Brake hose twisted |found during steering lock to lock check| |2.2.D.2b| | 1 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 1 |
| Nearside Rear Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Stop lamp|s| not working |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt |6.1.7 |g| |ii|| | 1 |
| Offside Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 1 |
| Offside Front constant velocity joint is excessively worn |2.5.C.1b| | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Offside Front drive shaft coupling is excessively worn |2.5.C.1c| | 1 |
| Nearside Steering arm has relative movement at its fixings |2.2.B.1h| | 1 |
| Nearside Headlamp not working on main beam |1.7.5a| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Nearside Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Vehicle identification number not permanently displayed |6.3.5a| | 1 |
| Nearside Front constant velocity joint is insecure |2.5.C.1b| | 1 |
| Nearside Front Front constant velocity joint gaiter insecure to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |
| Centre Exhaust system not adequately supported |7.1.1| | 1 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 1 |
| Parking brake lever has no reserve travel |3.1.6b| | 1 |
| Nearside Front Coil spring fractured or broken |5.3.1 |b| |i|| | 1 |
| Offside Rear Position lamp not working |4.2.1 |a|| | 1 |
| Centre Stop lamp not working |1.2.1b| | 1 |
| Engine MIL inoperative or indicates a malfunction |8.2.1.2 |h|| | 1 |
| Nearside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Emissions not tested |7.0| | 1 |
| Rear Mechanical brake component has restricted free movement | 1 |
| Nearside Rear Rear position lamp|s| not working |1.1.A.3b| | 1 |
| Offside Rear Direction indicator not working |1.4.A.2c| | 1 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 1 |
| Nearside Rear passenger door does not latch securely closed |6.2.B.1a| | 1 |
| Offside Headlamp not working on main beam |1.7.5a| | 1 |
| Offside Front Headlamp not working on main beam |1.7.5a| | 1 |
| Horn not working |1.6.2a| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Nearside Front suspension has excessive play in a lower suspension ball joint |2.5.B.1a| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Rear position lamp insecure |1.1.1c| | 1 |
| Fuel tank leaking |7.2.1a| | 1 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Rear Front mudguard insecure |2.3.7| | 1 |
| Front Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 1 |
| Anti-lock braking system warning lamp is missing. |3.4.1a| | 1 |
| Front passenger door cannot be opened from inside the vehicle |6.2.B.1b| | 1 |
| Front passenger door cannot be opened from outside the vehicle |6.2.B.1b| | 1 |
| Headlamp aim not tested |1.8.A.1c| | 1 |
| Nearside Rear Front position lamp|s| not working |1.1.A.3b| | 1 |
| Service brake: efficiency below requirements |3.7.B.7| | 1 |
| Offside Front Tie bar/rod ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 1 |
| Offside Front Suspension arm rubber bush deteriorated resulting in excessive movement |2.4.G.2| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Track rod end ball joint has excessive play |2.1.3 |b| |i|| | 1 |
| Offside Front Suspension arm ball joint excessively worn |5.3.4 |a| |i|| | 1 |
| Front Oil leaking excessively from engine |8.4.1 |a| |i|| | 1 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 1 |
| Offside Front Anti-roll bar linkage ball joint dust cover excessively deteriorated so that it no longer prevents the ingress of dirt |2.4.G.2| | 1 |
| Nearside Front Headlamp aim beam image obviously incorrect bulb fitted incorrectly |1.8.A.1b| | 1 |
| Emissions not tested due to exhaust leak |7.3.A.1| | 1 |
| Front Exhaust system not adequately supported mounting insecure |7.1.1| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 1 |
| Nearside Front constant velocity joint gaiter insecure to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |
| Centre Rear Seat belt stitching badly frayed |5.2.2b| | 1 |
| Driver`s airbag obviously defective |5.4.1| | 1 |
| Brake hydraulic reservoir insecurely mounted |3.6.A.2a| | 1 |
| Nearside Front Suspension arm ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.4.G.2| | 1 |
| Offside Front Track rod end ball joint has excessive play |2.2.B.1f| | 1 |
| Nearside Front Steering arm has relative movement at its fixings |2.2.B.1h| | 1 |
| Offside Front Steering arm has relative movement at its fixings |2.2.B.1h| | 1 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 1 |
| Rear parking brake recording little or no effort | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Nearside Front Steering lock stop ineffective |2.1.3| | 1 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Offside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 1 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Offside Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Offside Front Drive shaft joint excessively worn (6.1.7 (c) (i)) | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Headlamp light intensity severely reduced both starting too fade (4.1.4 (a)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| Suspension component mounting prescribed area excessively corroded significantly reducing structural strength both outer sills x2 (5.3.6 (a) (i)) | 1 |
| Nearside Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt insecure (6.1.7 (g) (ii)) | 1 |
| Offside Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt insecure (6.1.7 (g) (ii)) | 1 |
| Offside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 1 |
| Front Headlamp not working on dipped beam BOTH SIDES (4.1.1 (a) (ii)) | 1 |
| Offside Rear Lower Coil spring fractured or broken (5.3.1 (b) (i)) | 1 |
| Offside Front Service brake excessively binding (1.2.1 (f)) | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Nearside Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 1 |
| Fuel cap leaking (6.1.3 (b) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Steering linkage locking device ineffective no locking on right lock (2.1.3 (d)) | 1 |
| Steering operation restricted in free movement from lock to lock (2.1.4 (c)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Rear Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear Coil spring fractured or broken (5.3.1 (b) (i)) | 1 |
| Nearside Rear Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Offside Front Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 1 |
| Nearside Suspension arm ball joint excessively worn (5.3.4 (a) (i)) | 1 |
| Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 1 |
| Nearside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 1 |
| Offside Front Outer Drive shaft joint constant velocity boot split or insecure, no longer prevents the ingress of dirt (6.1.7 (g) (ii)) | 1 |
| Offside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Rear Service brake excessively binding (1.2.1 (f)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Front Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Nearside Front Headlamp aim not tested due to headlamp bulb not working (4.1.2 (b)) | 1 |
| Nearside Front Suspension component pin or bush excessively worn top mount/mcpherson strut (5.3.4 (a) (i)) | 1 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 1 |
| Offside Front Anti-roll bar linkage pin or bush excessively worn (5.3.4 (a) (i)) | 1 |
| Offside Front Brake hose excessively stretched (1.1.12 (b) (ii)) | 1 |
| Nearside Rear Wheel bearing rough when rotated (5.1.3 (b) (i)) | 1 |
| Nearside Side repeater incorrect colour (4.4.3 (a)) | 1 |
| Offside Side repeater incorrect colour (4.4.3 (a)) | 1 |
| Offside Front Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Offside Front Coil spring fractured or broken (5.3.1 (b) (i)) | 1 |