| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 30 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 23 |
| Registration plate issues | 22 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 11 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 11 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 10 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 9 |
| Nearside Front Direction indicator not working |1.5.1c| | 9 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 8 |
| Nearside Front Direction indicators not working |1.5.1c| | 8 |
| Nearside Rear Direction indicators not working |1.5.1c| | 8 |
| Offside Rear Direction indicators not working |1.5.1c| | 8 |
| Offside Front Direction indicator not working |1.5.1c| | 7 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 6 |
| Front wheel bearings have excessive free play |2.3.5b| | 6 |
| Horn not working |1.7.3a| | 6 |
| Nearside Rear Direction indicator not working |1.5.1c| | 6 |
| Offside Rear Direction indicator not working |1.5.1c| | 6 |
| Direction indicators not working |1.5.1c| | 5 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 5 |
| Offside Front Direction indicators not working |1.5.1c| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 5 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 5 |
| Horn not working (7.7 (a)) | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Front Position lamp not working (4.2.1 (a)) | 4 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Horn not working (7.7 (a) (ii)) | 4 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 4 |
| Front Brake excessively binding (1.2.1 (f)) | 4 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Front wheel bearings are excessively rough |2.3.5b| | 4 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 3 |
| Rear position lamp incorrect colour |1.1.2b| | 3 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 3 |
| Horn not working |7.7 |a| |ii|| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Front Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Rear Wheel bearing has excessive play |5.1.3 |a| |i|| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Horn not working |1.7.3a| | 2 |
| Front Horn not loud enough to be heard by another road user |1.7.3a| | 2 |
| Rear wheel has a loose wheel nut|s| |4.2.3a| | 2 |
| Stop lamp not working |4.3.1 |a| |ii|| | 2 |
| Front Direction indicator not working |1.5.1c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Direction indicators not working |1.5.1c| | 2 |
| Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 2 |
| Front Wheel bearing rough when rotated |5.1.3 |b| |i|| | 2 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Headlamp insecure |1.2.3b| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25% (1.2.2 (a) (i)) | 2 |
| Rear Brake pedal has insufficient reserve travel (1.1.2 (a)) | 2 |
| Position lamp showing white light to the rear (4.2.3 (a) (ii)) | 2 |
| 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 |
| Horn not working (1.7.3a) | 1 |
| Stop lamp does not illuminate immediately a brake applies front bk switch (1.3.1a) | 1 |
| Stop lamp not working front switch not working (4.3.1 (a) (ii)) | 1 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Stop lamp does not illuminate by the operation of both brake controls not working when operating front brake (4.3.2 (a) (iii)) | 1 |
| Horn sound not in accordance with requirements not loud enough-battery dead? (7.7 (c)) | 1 |
| Direction indicators flashing more than 120 times per minute all 4 |1.5.1c| | 1 |
| Horn control defective |1.7.2a| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Stop lamp not working front brake (4.3.1 (a) (ii)) | 1 |
| Offside Front Upper Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Wheel alignment incorrect which adversely affects the steering handle bars loose |2.5.1| | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Brake pedal is inoperative |3.1.3c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Inner Front Lower Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| Rear suspension has a fracture of a load bearing member or its supporting structure. |2.4.A.2d| | 1 |
| Centre Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Front Horn sounds harsh or grating |1.7.3c| | 1 |
| Front Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| All direction indicators incorrect colour |4.4.3 |a|| | 1 |
| Nearside All direction indicators not working |4.4.1 |a| |ii|| | 1 |
| All position lamps not working |4.2.1 |a|| | 1 |
| Offside Indicator tell tale not functioning |1.5.2| | 1 |
| Front Brake disc|s| securing bolt|s| loose |3.2.A1g| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Front Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Rear Direction indicator not working |1.5.1c| | 1 |
| Stop lamp does not illuminate immediately a brake applies with front brake |1.3.1a| | 1 |
| Rear position lamp incorrect colour shows white light |1.1.2b| | 1 |
| Stop lamp does not illuminate immediately a brake applies Front lever |1.3.1a| | 1 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Steering headbearing in such a condition that steering control is adversely affected (2.2.2 (f) (ii)) | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen (4.1.2 (a)) | 1 |
| Front Fork yoke deformed |2.1.1b| | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Rear wheel insecure |4.2.3b| | 1 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Headlamp aim not tested (4.1.2 (b)) | 1 |
| All position lamps not working (4.2.1 (a)) | 1 |
| Registration plate lamp issues | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Wheel fixing loose (single fixing) (5.2.1 (a) (ii)) | 1 |
| Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Offside Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Steering headbearing has excessive wear or free play |2.2.2 |f| |i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Throttle control functioning such that safe operation of the motorcycle is adversely affected |6.2.7 |a| |ii|| | 1 |
| Front All direction indicators light intensity significantly reduced |4.4.3 |a|| | 1 |
| Front All direction indicators obviously incorrectly positioned |4.4.3 |a|| | 1 |
| Offside Front Direction indicator incorrect colour (4.4.3 (a)) | 1 |
| Stop lamp not working Not working from front brake (4.3.1 (a) (ii)) | 1 |
| Rear position lamp damaged and function impaired |1.1.1b| | 1 |
| Nearside Front Direction indicator incorrect colour changed Bulb (4.4.3 (a)) | 1 |
| Nearside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake component has restricted free movement and operation is likely to be impeded |3.2.A1h| | 1 |
| Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Riders seat insecure |6.2.5 |a| |ii|| | 1 |
| Front Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Rear Wheel fixing missing (multiple fixings) (5.2.1 (a) (i)) | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Plate brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.B2b| | 1 |
| Rear Roller brake test indicates a severely juddering brake |3.3.A1b| | 1 |
| Wheel alignment incorrect which adversely affects the steering (2.4 (a)) | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Front Brake lever has restricted free movement |1.1.15 |e|| | 1 |
| Rear Brake drum contaminated |1.1.14 |b|| | 1 |
| Motorcycle structure has a fracture which is likely to adversely affect braking or steering rear guard insecure |6.1.1 |a| |ii|| | 1 |
| Headlamp aim not tested very dim |1.6| | 1 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front suspension has excessive stiffness in the suspension movement. |2.3.6b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Handlebar mounting insecure (2.2.1 (a) (i)) | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Locking devices not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on tail light not working |1.1.3a| | 1 |
| Stop lamp does not emit a steady light from front brake operation,light flickers,front switch at fault |1.3.1b| | 1 |
| Brake lever cannot be applied smoothly front brake lever operation feels dry and gritty,notchy when brake is applied |3.1.3d| | 1 |
| Front wheel bearings have excessive free play possibly due to suspension bearings more than wheel, play detected at wheel bearing check |2.3.5b| | 1 |
| Rear shock absorber insecurely mounted lower bolt |2.4.A.3b| | 1 |
| Rear Stop lamp lens defective such that the emitted light is adversely affected |4.3.1 |b| |ii|| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Front Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Handlebar mounting so insecure that steering is adversely affected (2.2.1 (a) (ii)) | 1 |
| Front Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Wheel more than one fixing loose (5.2.1 (a) (ii)) | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Front suspension assembly excessive wear or free play in a front suspension component |2.3.4| | 1 |
| Nearside Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Brake caliper leaking (1.1.16 (b) (i)) | 1 |
| Front Horn sound not in accordance with requirements |7.7 |c|| | 1 |
| Front Headlamp insecure (4.1.1 (c)) | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Rear Wheel has an excessively distorted bead rim. |4.2.2| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Rear reflector on motorcycle deteriorated and function impaired |1.4.2a| | 1 |
| Offside Front Direction indicator light intensity significantly reduced Bulb holder had fallen out. (4.4.3 (a)) | 1 |
| Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Nearside Rear All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Front Horn sound not in accordance with requirements on tick over it can hardly be herd , (7.7 (c)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls switch or wiring (4.3.2 (a) (iii)) | 1 |
| Rear Position lamp showing white light to the rear Lens has hole, burnt from wrong bulb, showing white light (4.2.3 (a) (ii)) | 1 |
| Rear Brake pedal has insufficient reserve travel Adjusted but no lock (1.1.2 (a)) | 1 |
| Front Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Rear Steering damper ineffective (2.1.4 (d) (i)) | 1 |
| Riders seat insecure (6.2.5 (a) (ii)) | 1 |