| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 28 |
| Rear Brake lever has inadequate reserve travel |3.1.3b| | 15 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 14 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 13 |
| Steering headbearing has excessive free play |2.2.2| | 11 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 10 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 8 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 6 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 5 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 5 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 4 |
| Headlamp aim beam image kick up to the offside |1.6| | 4 |
| Stop lamp remains on when the brakes are released | 4 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 3 |
| Rear Shock absorber has negligible damping effect (5.3.2 (b)) | 3 |
| Nearside Rear Direction indicators not working |1.5.1c| | 3 |
| Brake hose damaged | 3 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 3 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Nearside Handlebar handgrip not secure to handlebars. |2.1.1c| | 3 |
| Rear reflector on motorcycle missing |1.4.1| | 3 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 3 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 3 |
| Horn not working |1.7.3a| | 3 |
| Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 3 |
| Fairings insecure and likely to impede the steering |2.1.2e| | 3 |
| Rear Stop lamp remains on when the brake is released |1.3.1e| | 2 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 2 |
| Nearside Rear Brake lever has inadequate reserve travel |3.1.3b| | 2 |
| Rear Brake grabbing severely |1.2.1 |c|| | 2 |
| Headlamp deteriorated and function impaired |1.2.3a| | 2 |
| Front Brake pipe excessively chafed |3.2.B2a| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Brake hose excessively deteriorated | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Rear Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 2 |
| Rear Rear shock absorber has inadequate damping effect. |2.4.A.3b| | 2 |
| Fuel cap sealing washer torn |7.2.2c| | 2 |
| Front position lamp missing |1.1.1a| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Nearside Front Direction indicators not working |1.5.1c| | 2 |
| Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Front Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| All direction indicators not working (4.4.1 (a) (ii)) | 1 |
| Indicator switch insecure |1.5.4| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Front Horn not working |7.7 |a| |ii|| | 1 |
| Rear shock absorber insecurely mounted |2.4.A.3b| | 1 |
| Nearside Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Decelerometer brake test the less effective brake control does not achieve an efficiency of 25%. |3.3.E1b| | 1 |
| Front Brake hose damaged and likely to fail (1.1.12 (a)) | 1 |
| Rear Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Front Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Rear Brake indicates excessive fluctuation of brake effort |1.2.1 |e|| | 1 |
| Floor brake test Neither brake control achieves an efficiency of 25% |3.3.C1b| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Centre Front Upper Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Nearside Rear Upper Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Nearside Front Lower Brake hose fouling |3.2.B3b| | 1 |
| Nearside Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Brake lever has inadequate reserve travel |3.1.3b| | 1 |
| Rear Stop lamp remains on when the brake is released rear brake light remains permanently on |1.3.1e| | 1 |
| Rear Brake lever has inadequate reserve travel no reserve travel on rear brake lever | pulls to bar without locking wheel| |3.1.3b| | 1 |
| Front Front shock absorber seal failed and leaking oil front left fork seal leaking oil |2.3.3| | 1 |
| Rear Rear shock absorber seal failed and leaking oil rear shock leaking oil |2.4.A.1c| | 1 |
| Front Brake master cylinder fluid level dangerously low |3.2.B1d| | 1 |
| Stop lamp does not illuminate immediately a brake applies front brake light switch |1.3.1a| | 1 |
| Headlamp aim not tested Bike will not start to check headlights |1.6| | 1 |
| Indicator switch defective |1.5.4| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Suspension arm pin or bush excessively worn swinging arm |5.3.4 |a| |i|| | 1 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Suspension arm pin or bush excessively worn rear swingarm (5.3.4 (a) (i)) | 1 |
| Registration plate lamp issues | 1 |
| Handlebar mounting clamp loose handlebars loose forward/backward and left to right |2.1.1a| | 1 |
| Front Position lamp light intensity significantly reduced (4.2.3 (a) (ii)) | 1 |
| Front Shock absorber has negligible damping effect (5.3.2 (b)) | 1 |
| Steering headbearing excessively stiff or notchy (2.2.2 (f) (i)) | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Stop lamp remains on when the brake is released |1.3.1e| | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Nearside Rear Upper Shock absorber has an excessively worn bush top back bush as to much play in it |5.3.2 |c|| | 1 |
| Rear Brake lever attachment screws missing |3.1.2b| | 1 |
| Brake fluid reservoir fluid not visible (1.1.10 (d) (iii)) | 1 |
| Steering headbearing has excessive wear or free play (2.2.2 (f) (i)) | 1 |
| Nearside Rear Shock absorber insecurely attached (5.3.2 (a) (i)) | 1 |
| Horn not working horn not working |1.7.3a| | 1 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Front Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 1 |
| Rear Rear shock absorber seal failed and leaking oil |2.4.A.1c| | 1 |
| Riders seat insecure |6.2.1a| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Front position lamp does not face the front |1.1.1d| | 1 |
| Rear shock absorber insecurely mounted shock top mtg is warn |2.4.A.3b| | 1 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Nearside Brake lever excessively damaged |3.2.A1c| | 1 |
| Rear Brake linkage has abnormal movement due to maladjustment |3.2.A1i| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Fuel cap does not fasten securely by a positive means |7.2.2b| | 1 |
| Registration plate issues | 1 |
| Front Wheel alignment incorrect which adversely affects the handling |2.5.1| | 1 |
| Front Brake disc|s| excessively worn |3.2.A1l| | 1 |
| Steering lock stop missing |2.1.3| | 1 |
| Headlamp insecure reflector and bulb holder insecure |1.2.3b| | 1 |
| Offside Front Brake fluid reservoir leaking hydraulic fluid window broken |3.2.B1e| | 1 |
| Fuel system component insecure pipes not fixed retaining clips missing |7.2.1b| | 1 |
| Horn not working |7.7 |a| |ii|| | 1 |
| Front Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Headlamp not working on dipped beam lights not working in sink with switch |4.1.1 |a| |ii|| | 1 |
| Rear Wheel fixing loose |single fixing| |5.2.1 |a| |ii|| | 1 |
| Suspension arm ball joint excessively worn engin mounts |5.3.4 |a| |i|| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Rear Brake effort inadequate at a wheel |1.2.1 |a| |i|| | 1 |
| Central Front Upper Handlebar so insecure it is likely to become detached clamp bolt loose |2.2.1 |b| |ii|| | 1 |
| Central Rear Lower Valve stem seriously damaged |5.2.3 |j|| | 1 |
| Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Position lamp not working (4.2.1 (a)) | 1 |
| Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Handlebar mounting so insecure that steering is adversely affected (2.2.1 (a) (ii)) | 1 |
| Rear Rear wheel insecure |4.2.3b| | 1 |
| Shock absorber has a serious fluid leak both front |5.3.2 |b|| | 1 |
| Rear Brake lever has insufficient reserve travel |1.1.2 |a|| | 1 |
| Front Handlebar mounting excessively deteriorated |flexible type| handlebar top excessive play |2.1.1d| | 1 |
| Front Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 1 |
| Front Motorcycle structure excessively distorted front forks bent backwards |6.1.1a| | 1 |
| Position lamp not working |4.2.1 |a|| | 1 |
| Nearside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Headlamp not working on main beam |4.1.1 |a| |ii|| | 1 |
| Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Nearside Direction indicators not working |1.5.1c| | 1 |
| Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Front Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 1 |
| Rear Brake lever has insufficient reserve travel (1.1.2 (a)) | 1 |
| Rear Shock absorber has negligible damping effect |5.3.2 |b|| | 1 |
| Fuel cap ineffective seal damaged |6.1.3 |b| |i|| | 1 |
| Offside Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Valve stem seriously damaged (5.2.3 (j)) | 1 |
| Rear Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Rear Brake lagging in operation (1.2.1 (d)) | 1 |
| Front Stop lamp does not illuminate by the operation of both brake controls (4.3.2 (a) (iii)) | 1 |
| Exhaust has a major leak of exhaust gases (6.1.2 (a)) | 1 |
| Headlamp aim not tested |4.1.2 |b|| | 1 |
| Headlamp not working on dipped beam |4.1.1 |a| |ii|| | 1 |
| Rear Brake excessively binding cable deteriorated |1.2.1 |f|| | 1 |
| Exhaust has a major leak of exhaust gases |6.1.2 |a|| | 1 |
| Motorcycle structure has a fracture which is likely to adversely affect braking or steering rear arm fractured and bolts missing |6.1.1 |a| |ii|| | 1 |
| Rear Fuel cap ineffective (6.1.3 (b) (i)) | 1 |
| Dipswitch does not operate immediately when selected on dipped beam (4.1.3 (b)) | 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 |
| Offside Rear Motorcycle structure adversely modified rear shock absorber missing and mount broken off. |6.1.1b| | 1 |
| Nearside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Rear Upper Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Centre Rear Upper Fuel cap does not fasten securely maintaining the sealing arrangement |7.2.2b| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Front shock absorber seal failed and leaking oil both |2.3.3| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Front Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Headlamp switch faulty |1.2.4| | 1 |
| Fuel cap sealing washer deteriorated |7.2.2c| | 1 |
| Rear suspension bush has excessive free play TOP SHOCK MOUNTING POINT |2.4.A2a|i|| | 1 |
| Rear shock absorber has inadequate damping effect. bottoms out |2.4.A.3b| | 1 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 1 |
| Front Direction indicator incorrect colour |1.5.1b| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Handlebar so insecure it is likely to become detached pinch bolt loose (2.2.1 (b) (ii)) | 1 |
| Seat insecure |6.2.1a| | 1 |
| Offside Rear Direction indicators not working |1.5.1c| | 1 |
| Rear position lamp insecure |1.1.1c| | 1 |
| Wheel alignment incorrect which adversely affects the steering frame bent |2.5.1| | 1 |
| Wheel alignment incorrect which adversely affects the handling frame bent |2.5.1| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Front Steering lock stop ineffective |2.1.3| | 1 |
| Rear Floor brake test indicates a sticking brake |3.3.C2c| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Offside Rear Direction indicator not working |4.4.1 |a| |ii|| | 1 |
| Nearside Rear Direction indicator likely to become detached (4.4.1 (c) (ii)) | 1 |
| Rear Wheel has bolts/rivets missing or loose to the extent that control of the motorcycle is likely to be adversely affected mudguard loose (5.2.2 (e) (ii)) | 1 |
| Rear Wheel has bolts/rivets missing or loose to the extent that control of the motorcycle is likely to be adversely affected air box loose (5.2.2 (e) (ii)) | 1 |
| Rear Suspension component mounting modified so the suspension is inoperative exhaust bracket fouling movement (5.3.3 (c) (ii)) | 1 |
| Offside Front Brake lever insecure |3.1.2a| | 1 |
| Headlamp light intensity severely reduced (4.1.4 (a)) | 1 |
| Front Shock absorber has a serious fluid leak FORKS PITTED (5.3.2 (b)) | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Horn sound not in accordance with requirements (7.7 (c)) | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Offside Front Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Nearside Brake lever has inadequate reserve travel |3.1.3b| | 1 |