| Most common failures | No# failures |
|---|
| Registration plate lamp issues | 41 |
| Headlamp aim out of alignment | 29 |
| Brake hose excessively deteriorated | 11 |
| Registration plate issues | 9 |
| Front Brake excessively binding (1.2.1 (f)) | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Stop lamp not working (4.3.1 (a) (ii)) | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Rear Brake excessively binding (1.2.1 (f)) | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Front Brake excessively binding |1.2.1 |f|| | 3 |
| Front wheel bearings have excessive free play |2.3.5b| | 3 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 3 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Headlamp insecure |1.2.3b| | 3 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 3 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 2 |
| Front Wheel bearing rough when rotated (5.1.3 (b) (i)) | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 2 |
| Front Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Offside Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 2 |
| Rear Brake lining|s| less than 1.0 mm thick |1.1.13 |a|| | 1 |
| Front Stop lamp does not illuminate immediately a brake applies control |1.3.1a| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Dipswitch does not operate immediately when selected on dipped beam |4.1.3 |b|| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Horn not working |1.7.3a| | 1 |
| All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% |1.2.2 |a| |i|| | 1 |
| Front Steering movement excessively stiff with the wheel raised |2.2.1b| | 1 |
| Rear Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Front Brake caliper insecure |1.1.16 |c| |i|| | 1 |
| Stop lamp does not illuminate immediately a brake applies Both |1.3.1a| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Front Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Front Brake hose damaged and likely to fail crushed |1.1.12 |a|| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Riders seat insecure back not locking down |6.2.1a| | 1 |
| Central Rear All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Rear wheel spindle loose |2.4.A.2b| | 1 |
| All direction indicators adversely affected by the operation of another lamp |4.4.3 |b|| | 1 |
| Front Brake hose excessively damaged |1.1.12 |b| |ii|| | 1 |
| Front Brake caliper insecurely mounted and braking performance affected |1.1.16 |c| |ii|| | 1 |
| Offside Rear All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| Nearside Brake lever is so short that the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Central Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Central Exhaust noise is clearly in excess of that emitted by a similar motorcycle fitted with a standard silencer in average condition |8.1.1 |a|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort bent disc |1.2.1 |e|| | 1 |
| Forks insecure loose to frame |2.2.2 |d| |i|| | 1 |
| Offside Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies control 1|front| |1.3.1a| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Wheel alignment incorrect which adversely affects the steering Front forks twisted |2.5.1| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Brake lever is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Nearside Stop lamp does not illuminate immediately a brake applies Lever |1.3.1a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Front Lower Brake hose excessively damaged |1.1.12 |b| |ii|| | 1 |
| Rear Brake lever is bent and the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Brake lever has inadequate reserve travel rear brake |3.1.3b| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear suspension bush has excessive free play Engine mounting bush |2.4.A2a|i|| | 1 |
| Nearside Brake lever is bent and the brake cannot be readily applied |1.1.2 |d|| | 1 |
| Nearside Rear Footrest insecure |6.2.12 |a|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected Not attached in any way |6.2.7 |a| |ii|| | 1 |
| Front Shock absorber has a serious fluid leak Both seals |5.3.2 |b|| | 1 |
| Rear Shock absorber has a serious fluid leak Both shocks |5.3.2 |b|| | 1 |
| Front Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 1 |
| Offside Front Shock absorber has a serious fluid leak Fork seal Leaking Possibly due to corrosion on Stanchion. (5.3.2 (b)) | 1 |
| Front Brake hose excessively damaged (1.1.12 (b) (ii)) | 1 |
| Offside Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Brake fluid contaminated (1.8 (a)) | 1 |
| Front Brake fluid significantly below minimum mark (1.1.10 (d) (ii)) | 1 |
| Front Stop lamp switch with a delay in operation Not working on Front Brake Lever (4.3.2 (a) (ii)) | 1 |
| Front Brake hose damaged and likely to fail (1.1.12 (a)) | 1 |
| Front brake disc in such a condition that it is seriously weakened | 1 |
| Rear brake disc in such a condition that it is seriously weakened | 1 |
| Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Vehicle identification number has more than one different number displayed (0.2 (c)) | 1 |
| Headlamp insecure (4.1.1 (c)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Valve stem seriously misaligned (5.2.3 (j)) | 1 |
| Rear Wheel spindle or securing nut(s) so insecure that wheel security or steering control is adversely affected (5.2.1 (c) (ii)) | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Front Shock absorber has negligible damping effect bothsides (5.3.2 (b)) | 1 |
| Front Wheel bearing play so excessive it is likely to break up (5.1.3 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Nearside Rear Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Front Wheel bearing so rough it is likely to overheat or break up (5.1.3 (b) (ii)) | 1 |
| Rear Brake lever is so short that the brake cannot be readily applied (1.1.2 (d)) | 1 |
| Nearside Front Stop lamp switch with a delay in operation (4.3.2 (a) (ii)) | 1 |
| Stop lamp lens defective such that the emitted light is adversely affected (4.3.1 (b) (ii)) | 1 |
| Front Brake disc significantly and obviously worn (1.1.14 (a) (i)) | 1 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Nearside Footrest missing (6.2.12 (a)) | 1 |
| Nearside Rear Shock absorber has a serious fluid leak corroded badly (5.3.2 (b)) | 1 |
| Front Brake cable damaged (1.1.15 (a)) | 1 |
| All direction indicators adversely affected by the operation of another lamp (4.4.3 (b)) | 1 |
| Rear Position lamp likely to become detached (4.2.1 (c) (ii)) | 1 |
| Riders seat with a defective supporting structure (6.2.5 (a) (i)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |