| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 35 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 17 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 14 |
| Steering headbearing has excessive free play |2.2.2| | 14 |
| Rear reflector on motorcycle missing |1.4.1| | 14 |
| Drive chain excessively loose |6.2.1d| | 14 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 12 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 12 |
| Brake hose excessively deteriorated | 12 |
| Horn not working |1.7.3a| | 11 |
| Drive chain worn to excess |6.2.1e| | 11 |
| Registration plate issues | 11 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 11 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 9 |
| Offside Rear Footrest missing |6.2.1a| | 9 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 8 |
| Drive chain excessively tight |6.2.1d| | 7 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 7 |
| Direction indicator incorrect colour |1.5.1b| | 6 |
| Nearside Front Direction indicator incorrect colour |1.5.1b| | 6 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 6 |
| Rear Direction indicator incorrect colour |1.5.1b| | 6 |
| Front Direction indicator incorrect colour |1.5.1b| | 6 |
| Offside Front Direction indicator not working |1.5.1c| | 5 |
| Offside Front Direction indicator incorrect colour |1.5.1b| | 5 |
| Direction indicators not working |1.5.1c| | 5 |
| Nearside Front Direction indicator not working |1.5.1c| | 5 |
| Front Brake lever has inadequate reserve travel |3.1.3b| | 5 |
| Offside Rear Direction indicator incorrect colour |1.5.1b| | 4 |
| Nearside Rear Footrest missing |6.2.1a| | 4 |
| Indicator switch insecure |1.5.4| | 4 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 4 |
| Rear Brake caliper|s| insecure |3.2.A1j| | 4 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 3 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 3 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Headlamp aim not tested |1.6| | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 3 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 2 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 2 |
| Headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Handlebar deformed |2.1.1b| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Rear Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Nearside Rear Footrest insecure |6.2.1a| | 2 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 2 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Offside Rear Direction indicator not working |1.5.1c| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 2 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Nearside Handlebar deformed |2.1.1b| | 1 |
| Direction indicator not working |1.5.1c| | 1 |
| Clutch lever bent so it cannot be readily operated. |6.2.1g| | 1 |
| Nearside Footrest insecure |6.2.12 |a|| | 1 |
| Offside Footrest insecure |6.2.12 |a|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Offside Outer Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Brake master cylinder leaking hydraulic fluid |3.2.B1e| | 1 |
| Offside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Front Direction indicator insecure |1.5.3b| | 1 |
| Offside Rear Footrest insecure |6.2.1a| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Centre Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Position lamp switch insecure |1.1.4b| | 1 |
| Nearside Indicator switch insecure |1.5.4| | 1 |
| Rear reflector on sidecar missing |1.4.1| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Front position lamp obscured more than 50% |1.1.1d| | 1 |
| Front Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Front Brake hose fouling |3.2.B3b| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Brake lever excessively damaged |3.2.A1c| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Indicator tell tale not functioning |1.5.2| | 1 |
| Nearside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Front Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Offside Rear Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Headlamp aim beam image kick up to the offside |1.6| | 1 |
| Rear position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Offside Front Motorcycle structure cracked |6.1.1a| | 1 |
| Brake lever is so short and the brake cannot be readily applied |3.1.3c| | 1 |
| Exhaust mounting missing |7.1.1c| | 1 |
| Nearside Rear Direction indicator insecure |1.5.3b| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Rear Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear Brake pedal is bent and the brake cannot be readily applied |3.1.3c| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Brake pipe excessively chafed |3.2.B2a| | 1 |
| Nearside Front Footrest insecure |6.2.1a| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Direction indicator incorrect colour |1.5.1b| | 1 |
| Offside Rear Lower Brake pipe excessively damaged |3.2.B2a| | 1 |
| Outer Rear Lower Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 1 |
| Drive chain excessively loose (6.1.7 (c) (i)) | 1 |
| Indicator tell tale not operating correctly |1.5.2| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Front Brake locking device insecure |3.2.A1e| | 1 |
| Rear Brake locking device insecure |3.2.A1e| | 1 |
| Central Rear Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Centre Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Nearside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicators affected by the operation of another lamp |1.5.1c| | 1 |
| Front Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Stop lamp not working FOOT CONTROL |4.3.1 |a| |ii|| | 1 |
| Nearside Rear Footrest missing |6.2.12 |a|| | 1 |
| Offside Rear Footrest missing |6.2.12 |a|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Rear Stop lamp switch with a delay in operation FOOT CONTROL |4.3.2 |a| |ii|| | 1 |
| Headlamp aim not tested NO PATTERN TO TEST ON DIP BEAM BECAUSE DUE TO DIP AND MAIN BEAM WRONG WAY AROUND |4.1.2 |b|| | 1 |
| Front Indicator switch insecure |1.5.4| | 1 |
| Rear Brake cylinder insecurely mounted |3.2.B1a| | 1 |
| Front Headlamp aim headlamp damaged and function impaired |1.2.3a| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Front suspension fouling which affects the movement of the front suspension. |2.3.6a| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| An item not tested |Manual| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Offside Rear Footrest missing (6.2.12 (a)) | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Nearside Rear Footrest missing (6.2.12 (a)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Registration plate lamp issues | 1 |
| Front Brake caliper insecurely mounted and braking performance affected |1.1.16 |c| |ii|| | 1 |
| Rear Brake caliper insecurely mounted and braking performance affected |1.1.16 |c| |ii|| | 1 |
| Nearside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Offside Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Lower Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Rear Direction indicator not working |1.5.1c| | 1 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Front Footrest insecure |6.2.1a| | 1 |
| Brake caliper|s| insecure |3.2.A1j| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket has 2 bolts missing |6.2.1h| | 1 |
| Steering movement excessively rough with the weight on the lower bearing |2.2.1a| | 1 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front Wheel damaged significantly reducing the original strength |4.2.1a| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Nearside Footrest missing |6.2.1a| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Headlamp dipped beam affected by the operation of the horn |1.2.2c| | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Rear Brake lever pivot has excessive free play |1.1.1 |b|| | 1 |
| Central Rear Upper Locking devices not correctly fitted which may make the motor bicycle dangerous to ride Top shock securing bolt |6.2.1h| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts insecure |3.2.B2c| | 1 |
| Rear Rear wheel bearings are excessively rough |2.4.A.2c| | 1 |
| Nearside Rear Motorcycle structure cracked rear swing arm |6.1.1a| | 1 |
| Rear Rear suspension bush has excessive free play top mount |2.4.A2a|i|| | 1 |
| Rear Drive chain sprocket worn to excess loose bolts insecure |6.2.1e| | 1 |
| Front Brake hose leaking fluid at calliper |3.2.B4| | 1 |
| Offside Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Front Front suspension assembly component excessively bent |2.3.1| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Motorcycle structure cracked |6.1.1a| | 1 |
| Rear wheel spindle loose |2.4.A.2b| | 1 |
| Headlamp dipped beam affected by the operation of another lamp |1.2.2c| | 1 |
| Front Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |