| Most common failures | No# failures |
|---|
| Registration plate issues | 61 |
| Headlamp aim out of alignment | 54 |
| Rear reflector on motorcycle missing |1.4.1| | 43 |
| Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 17 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 15 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 13 |
| Horn not working |1.7.3a| | 11 |
| Brake pipe excessively corroded | 10 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 9 |
| Front wheel bearings have excessive free play |2.3.5b| | 7 |
| Drive chain excessively loose |6.2.1d| | 7 |
| Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 7 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 7 |
| Rear reflector missing (4.8.2 (a) (ii)) | 6 |
| Steering lock stop ineffective |2.1.3| | 6 |
| Nearside 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 |
| Headlamp at least one does not illuminate on main beam |1.2.2a|ii|| | 5 |
| Offside Rear Direction indicator not working |1.5.1c| | 5 |
| Offside Stop lamp not working |1.2.1b| | 5 |
| Rear reflector on motorcycle missing (1.4.1) | 4 |
| Rear position lamp does not illuminate immediately when it is switched on (1.1.3a) | 4 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| Front Front wheel bearings have excessive free play |2.3.5b| | 4 |
| Rear wheel bearings have excessive free play |2.4.A.2c| | 4 |
| Front Wheel has an excessively distorted bead rim. |4.2.2| | 4 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 4 |
| 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| | 4 |
| Offside Rear Direction indicators not working |1.5.1c| | 3 |
| Front Horn not working |1.7.3a| | 3 |
| Front Steering lock stop ineffective |2.1.3| | 3 |
| Drive chain fouling another component |6.2.1d| | 3 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 3 |
| Horn not working (1.7.3a) | 3 |
| Nearside Rear Stop lamp not working |1.2.1b| | 3 |
| Horn not working |1.6.2a| | 3 |
| Windscreen wiper does not clear the windscreen effectively | 3 |
| Nearside Stop lamp not working |1.2.1b| | 3 |
| Registration plate lamp issues | 3 |
| Headlamp aim headlamp deteriorated and function impaired |1.2.3a| | 3 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 3 |
| Front Stop lamp not working (4.3.1 (a) (ii)) | 3 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Offside Steering lock stop maladjusted |2.1.3| | 2 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 2 |
| Drive chain worn to excess |6.2.1e| | 2 |
| Rear Brake fluid reservoir fluid level dangerously low |3.2.B1d| | 2 |
| Front Wheel spoke excessively loose |4.2.1b| | 2 |
| Rear Position lamp not working (4.2.1 (a)) | 2 |
| Nearside Rear Direction indicator not working |1.5.1c| | 2 |
| Headlamp switch faulty |1.2.4| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Floor brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.C1b| | 2 |
| Offside Front Footrest insecure |6.2.1a| | 2 |
| Exhaust markings indicating not for road use or similar wording |7.1.4| | 2 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 2 |
| Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 2 |
| Front Brake disc|s| has excessive run out |3.2.A1m| | 2 |
| Offside Front Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Rear Stop lamp not working (4.3.1 (a) (ii)) | 2 |
| Drive chain excessively loose (6.2.1d) | 2 |
| Rear Rear reflector missing (4.8.2 (a) (ii)) | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Nearside Rear Direction indicator not working (4.4.1 (a) (ii)) | 2 |
| Headlamp not working on dipped beam (4.1.1 (a) (ii)) | 2 |
| Front suspension assembly component loose |2.3.1| | 2 |
| Indicator switch insecure |1.5.4| | 2 |
| Riders seat insecure |6.2.1a| | 2 |
| Nearside Steering lock stop ineffective |2.1.3| | 2 |
| Front wheel bearings are excessively rough |2.3.5b| | 2 |
| Centre Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Front All position lamps do not illuminate immediately when switched on |1.1.3a| | 2 |
| Exhaust emissions carbon monoxide content after 2nd fast idle excessive |7.3.D.3| | 2 |
| Front brake excessively fluctuating | 2 |
| Nearside Front coil spring incomplete |2.4.C.1a| | 2 |
| Service brake: efficiency below requirements |3.7.B.7| | 2 |
| Parking brake: efficiency below requirements |3.7.B.7| | 2 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 2 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 2 |
| Rear Rear suspension bush has excessive free play |2.4.A2a|i|| | 2 |
| Dipswitch does not deflect the main beam/s, making them into dipped beam/s |1.2.2b|ii|| | 2 |
| All direction indicators not working (4.4.1 (a) (ii)) | 2 |
| Rear 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| | 2 |
| Roller brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.A2b| | 2 |
| Rear Wheel bearing has excessive play (5.1.3 (a) (i)) | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Front Headlamp at least one does not illuminate on dipped beam |1.2.2a|i|| | 2 |
| Offside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 2 |
| Nearside Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Offside Front shock absorber seal failed and leaking oil (2.3.3) | 1 |
| Riders seat insecure (6.2.1a) | 1 |
| Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Brake indicates excessive fluctuation of brake effort (1.2.1 (e)) | 1 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Fuel system component leaking |7.2.1a| | 1 |
| Direction indicator incorrect colour |1.5.1b| | 1 |
| Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Wheel spoke excessively loose |4.2.1b| | 1 |
| Rear Wheel spoke excessively corroded |4.2.1b| | 1 |
| Front Brake caliper|s| insecure |3.2.A1j| | 1 |
| Nearside Drive chain excessively loose |6.2.1d| | 1 |
| Front Wheel spoke missing |4.2.1b| | 1 |
| Nearside Front Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Offside Rear Direction indicator not working (4.4.1 (a) (ii)) | 1 |
| Steering operation fouling on the fuel tank or bodywork on full lock (2.1.4 (b)) | 1 |
| Direction indicators not working |1.5.1c| | 1 |
| Headlamp insecure |4.1.1 |c|| | 1 |
| Stop lamp not working (4.3.1 (a) (ii)) | 1 |
| Offside Front Direction indicators not working |1.5.1c| | 1 |
| Rear wheel spindle securing nut locking device insecure Rear |2.4.A.2b| | 1 |
| Roller brake test indicates a binding brake Rear |3.3.A1a| | 1 |
| Headlamp not working on main beam (4.1.1 (a) (ii)) | 1 |
| Horn not working (7.7 (a) (ii)) | 1 |
| Rear Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 1 |
| Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Footrest insecure |6.2.1a| | 1 |
| Front position lamp missing |1.1.1a| | 1 |
| Front Wheel has an excessively eccentric bead rim. |4.2.2| | 1 |
| Rear Brake disc|s| has excessive run out |3.2.A1m| | 1 |
| Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Brake disc|s| securing bolt|s| missing |3.2.A1g| | 1 |
| Steering movement excessively stiff with the weight on the lower bearing |2.2.1a| | 1 |
| Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Rear Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Front Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Riders seat insecure |6.2.1a| | 1 |
| Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Nearside Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Clutch lever shortened so it cannot be readily operated. |6.2.1g| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Rear Direction indicator missing |1.5.1a| | 1 |
| Front Front wheel has a missing wheel nut|s| |4.2.3a| | 1 |
| Front Brake caliper|s| securing bolt|s| missing |3.2.A1j| | 1 |
| Drive chain excessively tight, so that it is likely to fail (6.1.7 (k) (ii)) | 1 |
| Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Rear wheel spindle securing nut locking device insecure |2.4.A.2b| | 1 |
| Offside Rear Direction indicator not working (1.5.1c) | 1 |
| Rear mono-shock insecure |2.4.B.4| | 1 |
| Rear Stop lamp not working rear lever (4.3.1 (a) (ii)) | 1 |
| Headlamp at least one does not illuminate on main beam (1.2.2a(ii)) | 1 |
| Steering movement excessively notchy with the weight on the lower bearing (2.2.1a) | 1 |
| Nearside Rear Direction indicators not working |1.5.1c| | 1 |
| Front Steering control fouling between components which interferes with the free movement of the steering |2.1.2a| | 1 |
| Fuel system component insecure |7.2.1b| | 1 |
| Front suspension has inadequate damping effect. |2.3.6c| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Centre Rear Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Indicator switch does not operate the direction indicators on the side selected |1.5.4| | 1 |
| Front Brake disc|s| securing bolt|s| missing One bolt missing, one bolt broken |3.2.A1g| | 1 |
| Rear Rear reflector on motorcycle missing (1.4.1) | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride rear sprocket fixing bolts loose |6.2.1h| | 1 |
| Rear Rear wheel bearings have excessive free play |2.4.A.2c| | 1 |
| Rear Exhaust mounting does not fully support the exhaust system |7.1.1.c| | 1 |
| Offside Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Wheel alignment incorrect which adversely affects the handling (2.4 (a)) | 1 |
| Offside Rear Stop lamp not working |1.2.1b| | 1 |
| Brake pedal spongy |3.3.B.1b| | 1 |
| Nearside Rear Anti-roll bar linkage has excessive play in a ball joint |2.4.G.2| | 1 |
| Nearside Front Lower Suspension arm has excessive play in a pin/bush |2.4.G.2| | 1 |
| Offside Front coil spring incomplete |2.4.C.1a| | 1 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 1 |
| Rear parking brake recording little or no effort | 1 |
| Exhaust emissions carbon monoxide content at idle excessive |7.3.D.4| | 1 |
| Windscreen washer not working | 1 |
| Nearside Rear Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Offside Rear Position lamp not working (4.2.1 (a) (ii)) | 1 |
| Service brake efficiency below requirements (1.2.2 (a) (i)) | 1 |
| Nearside Front Direction indicator incorrect colour Wing repeater (4.4.3 (a)) | 1 |
| Offside Direction indicator incorrect colour Wing repeater (4.4.3 (a)) | 1 |
| Offside Front Headlamp aim projected beam image is obviously incorrect (4.1.2 (c)) | 1 |
| Nearside Front Track rod end ball joint dust cover excessively damaged or deteriorated so that it no longer prevents the ingress of dirt (2.1.3 (g) (ii)) | 1 |
| Nearside Front Macpherson strut top bush or bearing has excessive wear or free play Top mount (5.3.4 (a) (i)) | 1 |
| Offside Front coil spring broken |2.4.C.1a| | 1 |
| Fuel cap/sealing device sealing washer deteriorated |7.2.4c| | 1 |
| Front passenger door cannot be opened from outside the vehicle |6.2.B.1b| | 1 |
| Nearside Front coil spring broken |2.4.C.1a| | 1 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 1 |
| Nearside Rear coil spring broken |2.4.C.1a| | 1 |
| Offside Rear coil spring broken |2.4.C.1a| | 1 |
| Offside Front coil spring fractured |2.4.C.1a| | 1 |
| Nearside Front Track rod end ball joint dust cover excessively damaged so that it no longer prevents the ingress of dirt |2.2.C.1c| | 1 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 1 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 1 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 1 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 1 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 1 |
| Offside Rear Brake pipe excessively chafed |3.6.B.2c| | 1 |
| Offside Front Inner Suspension arm rubber bush deteriorated resulting in excessive movement wishbone bushes |2.4.G.2| | 1 |
| Drive chain excessively loose |6.1.7 |c| |i|| | 1 |
| Direction indicators flashing more than 120 times per minute |1.5.1c| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Front Stop lamp damaged and function impaired |1.3.3a| | 1 |
| Stop lamp remains on when the brakes are released | 1 |
| Fuel pipe union leaking |7.2.1a| | 1 |
| Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Locking device|s| not correctly fitted which may make the motor bicycle dangerous to ride Chain link damaged |6.2.1h| | 1 |
| Offside Rear suspension bearing has excessive free play swinging arm |2.4.A2a|i|| | 1 |
| Headlamp at least one does not illuminate on dipped beam all lights go off when steering is turned |1.2.2a|i|| | 1 |
| Front Front position lamp flickers when tapped lightly by hand |1.1.3c| | 1 |
| Offside Rear Drive chain excessively loose |6.2.1d| | 1 |
| Offside Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Seat insecure |6.2.1a| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Nearside 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 |
| Horn missing |1.7.1| | 1 |
| Rear Exhaust markings indicating not for road use or similar wording |7.1.4| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 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 |
| Centre Front Upper Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Brake pedal cannot be released smoothly |3.1.3d| | 1 |
| Front Steering headbearing has excessive free play |2.2.2| | 1 |
| Front Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Rear Direction indicator flashing more than 120 times per minute |1.5.1c| | 1 |
| Front Indicator switch defective |1.5.4| | 1 |
| Rear Rear mono-shock pivot excessively worn |2.4.B.4| | 1 |
| Roller brake test No brake control achieves an efficiency of 30%. |3.3.A2a| | 1 |
| Upper 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 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 1 |
| Nearside Steering lock stop maladjusted |2.1.3| | 1 |
| Nearside Front Clutch lever positioned so it cannot be readily operated. |6.2.1g| | 1 |
| Front Steering control handlebar movement restricted by trapped cables |2.1.2c| | 1 |
| Nearside Front Handlebar handgrip not secure to handlebars. |2.1.1c| | 1 |
| Front Steering movement excessively `notchy` with the weight on the lower bearing |2.2.1a| | 1 |
| Offside Rear Motorcycle structure excessively damaged |6.1.1a| | 1 |
| Rear Footrest missing |6.2.1a| | 1 |
| Front Wheel fractured significantly reducing the original strength |4.2.1a| | 1 |
| Rear Position lamp not working |4.2.1 |a|| | 1 |
| Front Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Rear Stop lamp not working |4.3.1 |a| |ii|| | 1 |
| Front Fairing so located that it is likely to impede the steering |2.1.2e| | 1 |
| Rear Brake disc|s| cracked |3.2.A1g| | 1 |
| Headlamp insecure |1.2.3b| | 1 |
| Nearside Front Lower Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Offside Rear Upper Direction indicator insecure |1.5.3b| | 1 |
| Offside Indicator tell tale not operating correctly |1.5.2| | 1 |
| Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Offside Front Clutch lever shortened so it cannot be readily operated. (6.2.1g) | 1 |
| Rear Brake disc(s) cracked (3.2.A1g) | 1 |
| Stop lamp does not illuminate immediately a brake applies (1.3.1a) | 1 |
| Rear Roller brake test indicates a binding brake (3.3.A1a) | 1 |
| Gradient brake test The less effective brake control does not achieve an efficiency of 25%. |3.3.D1b| | 1 |
| Front Decelerometer brake test indicates a binding brake |3.3.E1d| | 1 |
| Rear Brake caliper|s| securing bolt|s| loose |3.2.A1j| | 1 |
| Nearside Rear Footrest missing |6.2.1a| | 1 |
| Offside Rear Footrest missing |6.2.1a| | 1 |
| Position lamp switch faulty |1.1.4a| | 1 |
| Stop lamp affected by the operation of another lamp |1.3.2| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Chain guard insecure not fitted |6.1.7 |i|| | 1 |
| Central Front Exhaust has a major leak of exhaust gases from manifold arear |6.1.2 |a|| | 1 |
| Rear Rear reflector missing |4.8.2 |a| |ii|| | 1 |
| Offside Drive chain horseshoe locking device incorrectly fitted (6.1.7 (j) (i)) | 1 |
| Front Horn not working (7.7 (a)) | 1 |
| Front Wheel hub worn to the extent that wheel security is adversely affected (5.2.1 (b) (ii)) | 1 |
| Exhaust system insecure (6.1.2 (a)) | 1 |
| Throttle operating incorrectly (6.2.7 (a) (i)) | 1 |
| Front Wheel bearing has excessive play (5.1.3 (a) (i)) | 1 |
| Fuel system component leaking at carburetor (6.1.3 (b) (i)) | 1 |
| Nearside Front Shock absorber has a serious fluid leak (5.3.2 (b)) | 1 |
| Front Headlamp aim projected beam image obviously incorrect (4.1.2 (c)) | 1 |