| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 28 |
| Rear reflector on motorcycle missing |1.4.1| | 19 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 11 |
| Registration plate issues | 10 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 9 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 9 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 7 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 6 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 6 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 6 |
| Drive chain excessively loose |6.2.1d| | 5 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 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| | 4 |
| Rear Footrest missing |6.2.1a| | 3 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 3 |
| Throttle operating incorrectly |6.2.1f| | 3 |
| Nearside Rear Footrest missing |6.2.1a| | 3 |
| Offside Rear Footrest missing |6.2.1a| | 3 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 3 |
| Drive chain excessively tight |6.2.1d| | 3 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 3 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear reflector missing (4.8.2 (a) (ii)) | 3 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Front suspension has inadequate damping effect. |2.3.6c| | 2 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Rear Brake pedal cracked |3.1.2c| | 2 |
| Nearside Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Nearside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 2 |
| Rear reflector on motorcycle obscured |1.4.1| | 2 |
| Front Roller brake test indicates a sticking brake |3.3.A1a| | 2 |
| Front Front mudguard insecure |2.3.7| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Roller brake test indicates a severely grabbing brake |3.3.A1b| | 2 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 2 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 2 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 2 |
| Rear Brake disc|s| cracked |3.2.A1g| | 2 |
| Steering headbearing has excessive free play |2.2.2| | 2 |
| Front Brake excessively binding (1.2.1 (f)) | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 1 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Brake pedal insecure |3.1.2a| | 1 |
| Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Front position lamp incorrect colour |1.1.2a| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Nearside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Offside Front Direction indicator affected by the operation of another lamp |1.5.1c| | 1 |
| Rear Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Headlamp aim so that beam "kick up" is not visible on the screen |1.6.B.1| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Offside Rear Lower Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Direction indicator flashing more than 120 times per minute ALL |1.5.1c| | 1 |
| Rear Brake performance not tested |3.3| | 1 |
| Front Handlebar mounting clamp loose |2.1.1a| | 1 |
| Offside Rear Direction indicator insecure |1.5.3b| | 1 |
| Nearside Steering lock stop ineffective |2.1.3| | 1 |
| 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| | 1 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Chain guard insecure |6.2.1c| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Nearside Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Brake hose fouling |3.2.B3b| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Horn not working |1.7.3a| | 1 |
| Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Lower Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Centre Front Lower Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Brake hose damaged | 1 |
| Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Front Brake hose leaking fluid |3.2.B4| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake pedal cracked |3.1.2c| | 1 |
| Front Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride |6.2.1h| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Front Exhaust excessively deteriorated |7.1.1a| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear Stop lamp missing |1.3.3a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Horn not working |1.7.3a| | 1 |
| Front Plate brake test indicates a binding brake |3.3.B1a| | 1 |
| Rear Stop lamp does not emit a steady light |1.3.1b| | 1 |
| Fuel hose leaking |7.2.1a| | 1 |
| Rear Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Front Headlamp switch faulty |1.2.4| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Brake locking device missing |3.2.A1e| | 1 |
| Offside Front Fairings so located that it is likely to impede the steering |2.1.2e| | 1 |
| Front position lamp incorrect colour |1.1.2a| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Rear Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear reflector on motorcycle damaged and function impaired |1.4.2a| | 1 |
| Nearside Front Direction indicators not working |1.5.1c| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Nearside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Offside Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Exhaust has part of the system missing |7.1.1a| | 1 |
| Horn is not a constant note |1.7.3c| | 1 |
| Nearside Front Direction indicator missing |1.5.1a| | 1 |
| Offside Front Direction indicator missing |1.5.1a| | 1 |
| Nearside Rear Direction indicator missing |1.5.1a| | 1 |
| Offside Rear Direction indicator missing |1.5.1a| | 1 |
| Nearside Footrest insecure |6.2.1a| | 1 |
| Motorcycle structure insecure and likely to affect the correct functioning of the steering or braking |6.1.1c| | 1 |
| Rear An item not tested |Manual| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Offside Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 1 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Front Fuel system component insecure |7.2.1b| | 1 |
| Nearside Front Steering control has Insufficient clearance at full lock affecting the riders operation of the controls |2.1.2b| | 1 |
| Offside Motorcycle structure cracked |6.1.1a| | 1 |
| Nearside Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear Stop lamp deteriorated and function impaired |1.3.3a| | 1 |
| Rear reflector on motorcycle incorrectly positioned |1.4.2d| | 1 |
| Offside Front Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Headlamp aim beam image kick-up is to the offside |1.6.1| | 1 |
| Nearside Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Offside Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Nearside Direction indicator insecure |1.5.3b| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Brake pedal has insufficient reserve travel |1.1.2 |a|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Front position lamp obscured more than 50% |1.1.1d| | 1 |
| Rear position lamp deteriorated and function impaired |1.1.1b| | 1 |
| Front Motorcycle structure excessively distorted |6.1.1a| | 1 |
| Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Exhaust silencer insecure (8.1.1 (b) (i)) | 1 |
| Fuel tank insecure (6.1.3 (a) (i)) | 1 |
| Registration plate lamp issues | 1 |
| Fuel system component leaking carbs (6.1.3 (b) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Rear Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |