| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 50 |
| Registration plate issues | 29 |
| Horn not working |1.7.3a| | 8 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 8 |
| Rear reflector on motorcycle missing |1.4.1| | 8 |
| Exhaust noise is clearly in excess of that emitted by a similar motor bicycle fitted with a standard silencer in average condition |7.1.2| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 6 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 6 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 5 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 4 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 4 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 4 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 3 |
| Stop lamp remains on when the brakes are released | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Front Brake disc|s| is excessively distorted |3.2.A1m| | 2 |
| Brake pedal cannot be released smoothly |3.1.3d| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Centre Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Offside Rear Direction indicators not working |1.5.1c| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 2 |
| Centre Stop lamp not working |1.2.1b| | 2 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Hazard warning switch missing |1.4.B.1d| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Parking brake lever has no reserve travel |3.1.6b| | 2 |
| Front 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 |
| Registration plate lamp issues | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Nearside Rear Direction indicator likely to become detached |4.4.1 |c| |ii|| | 1 |
| Rear Stop lamp not working rear foot peg switch |4.3.1 |a| |ii|| | 1 |
| Rear reflector on motorcycle obscured |1.4.1| | 1 |
| Nearside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Brake pedal cannot be applied smoothly |3.1.3d| | 1 |
| 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 |
| Offside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Centre Headlamp not working on main beam |1.7.5a| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Upper Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Stop lamp adversely affected by the operation of another lamp |4.3.3 |b|| | 1 |
| Stop lamp not working both |4.3.1 |a| |ii|| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Nearside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Front Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Nearside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Offside Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Nearside Front Direction indicator deteriorated and function impaired |1.5.3a| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Throttle operating incorrectly sticking on rh lock |6.2.1f| | 1 |
| Brake component worn and seriously reduced in strength Front pads worn out |3.2.A1| | 1 |
| Front Shock absorber has a serious fluid leak |2.7.3| | 1 |
| Direction indicators not working |1.4.A.2c| | 1 |
| Handlebar mounting clamp bolt loose |9.2.1c| | 1 |
| Steering control restriction of the free movement of the steering |9.2.2a| | 1 |
| Brake hydraulic reservoir insecurely mounted |3.6.A.2a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Direction indicator missing |1.5.1a| | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Front Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Rear Rear position lamp|s| missing they must be symmetrically mounted. If the maximum vehicle width exceeds 1300 mm, two rear position lamps are required. |1.1.A.3a| | 1 |
| Rear Rear reflector missing they must be symmetrically mounted. If the maximum vehicle width exceeds 1300 mm, two rear required. |1.5.1a| | 1 |
| Stop lamp missing they must be symmetrically mounted. If the maximum vehicle width exceeds 1300 mm, two rear stop lamps are required. |1.2.1a| | 1 |
| Fuel cap/sealing device missing |7.2.4a| | 1 |
| Stop lamp adversely affected by the operation of another lamp |1.2.1f| | 1 |
| Central Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Throttle operating incorrectly Throttle sticks on full |6.2.1f| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride l/h handle bar grip spins. |6.2.1h| | 1 |
| Front Brake pipe excessively chafed |3.2.B2a| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Hazard warning lamps not fitted |4.4.1 |d|| | 1 |
| Parking brake is not capable of being maintained in operation by direct mechanical action only |3.1.2| | 1 |
| Offside Rear Outer Suspension arm attachment bracket/mounting insecure top |2.4.G.1| | 1 |
| Stop lamp not working |1.2.1b| | 1 |
| Rear All position lamps not working |1.1.A.3b| | 1 |
| Rear Stop lamp not working |1.2.1b| | 1 |
| Nearside Front position lamp|s| missing |1.1.A.3a| | 1 |
| Offside Front position lamp|s| missing |1.1.A.3a| | 1 |
| Nearside Stop lamp missing |1.2.1a| | 1 |
| Offside Stop lamp missing |1.2.1a| | 1 |
| Nearside Rear reflector missing |1.5.1a| | 1 |
| Offside Rear reflector missing |1.5.1a| | 1 |
| Rear brake binding | 1 |
| Parking brake: efficiency below requirements |3.7.B.7| | 1 |
| Front Position lamp not working |4.2.1 |a|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| All direction indicators missing |4.4.1 |a| |ii|| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Offside Handlebar grip insecure to handlebar |2.2.1 |d| |ii|| | 1 |
| Stop lamp not working FRONT BRAKE |4.3.1 |a| |ii|| | 1 |
| Stop lamp not working REAR BRAKE |4.3.1 |a| |ii|| | 1 |
| Handlebar deformed |2.1.1b| | 1 |
| Horn sounds harsh or grating |1.7.3c| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| An item not tested |Manual| | 1 |
| Offside Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Front Brake lever mounting insecure master cylinder clamp inverted |3.1.2a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Rear Direction indicator obscured |1.5.1a| | 1 |
| Rear wheel bearing has excessive play |2.6.2| | 1 |
| Braking system leaking |3.6.A.1| | 1 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 1 |
| Front Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Headlamp aim beam image kick up to the offside and aim high |1.6| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Brake caliper leaking and braking performance affected |1.1.16 |b| |ii|| | 1 |
| Stop lamp not working FRONT SWITCH TERMINAL |4.3.1 |a| |ii|| | 1 |
| Stop lamp showing white light to the rear |4.3.3 |a| |ii|| | 1 |
| Nearside Rear Parking brake efficiency below requirements |3.7.B.7| | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Brake fluid contaminated |1.8 |a|| | 1 |
| Front Brake lever has restricted free movement |1.1.15 |e|| | 1 |
| Centre Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Brake lever cannot be applied smoothly |3.1.3d| | 1 |
| Rear Direction indicators not working |1.5.1c| | 1 |
| Rear Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Rear Footrest insecure bolts missing from both hangers (6.2.12 (a)) | 1 |
| Stop lamp not working footbrake (4.3.1 (a) (ii)) | 1 |
| Rear Position lamp not working (4.2.1 (a)) | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Brake excessively binding (1.2.1 (f)) | 1 |
| Exhaust mounting missing (7.1.1c) | 1 |
| Front Valve stem seriously damaged spliting (5.2.3 (j)) | 1 |
| Offside Front Brake lever has abnormal movement of levers indicating excessive wear or maladjustment lever comes back to grip adjusted (1.1.15 (f)) | 1 |
| Rear Stop lamp not working loose wire (4.3.1 (a) (ii)) | 1 |
| Nearside Handlebar grip insecure to handlebar (2.2.1 (d) (ii)) | 1 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Front Brake disc significantly and obviously worn both x 2 (1.1.14 (a) (i)) | 1 |
| Front Headlamp incorrect colour (4.1.4 (a)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake effort inadequate at a wheel (1.2.1 (a) (i)) | 1 |
| Offside Rear 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 |
| Suspension component pin or bush excessively worn rear lower suspension swinging arm linkage front pin/bush excessively worn (5.3.4 (a) (i)) | 1 |
| Stop lamp not working front brake control (4.3.1 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Brake has no recorded effort at a wheel (1.2.1 (a) (ii)) | 1 |
| Nearside Motorcycle structure joining/attachment plate or fastening insecure bracket / plate insecure / bolt tightened up (6.1.1 (b) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 1 |
| Front Headlamp light source and lamp not compatible (4.1.4 (c)) | 1 |
| Nearside Front Brake caliper excessively corroded and likely to crack pads corroded in calipers (1.1.16 (d) (ii)) | 1 |
| Rear Brake caliper excessively corroded and likely to crack (1.1.16 (d) (ii)) | 1 |
| Front Brake caliper has no reserve travel and braking performance affected (1.1.16 (e) (ii)) | 1 |
| Rear Brake pedal not releasing correctly and functionality of brakes affected (1.1.2 (b) (ii)) | 1 |
| Offside Front Brake caliper excessively corroded and likely to crack (1.1.16 (d) (ii)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Throttle operating incorrectly Not returning when released (6.2.7 (a) (i)) | 1 |