| Most common failures | No# failures |
|---|
| Headlamp aim out of alignment | 10 |
| Rear reflector on motorcycle missing |1.4.1| | 7 |
| Registration plate issues | 3 |
| Front Roller brake test indicates a binding brake |3.3.A1a| | 3 |
| Drive chain excessively loose |6.2.1d| | 3 |
| Rear Rear reflector on motorcycle missing |1.4.1| | 2 |
| Drive chain excessively tight |6.2.1d| | 2 |
| Chain guard insecure |6.2.1c| | 2 |
| Wheel alignment incorrect which adversely affects the handling |2.5.1| | 2 |
| Front Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Nearside Front Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 2 |
| Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 2 |
| Fuel system component leaking |7.2.1a| | 2 |
| Steering control handlebar movement restricted by cables caught on a projection |2.1.2c| | 2 |
| Offside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 2 |
| Nearside Front shock absorber seal failed and leaking oil |2.3.3| | 2 |
| Rear Roller brake test indicates a binding brake |3.3.A1a| | 2 |
| Front Roller brake test indicates excessive fluctuation of brake effort |3.3.A1d| | 2 |
| Headlamp aim beam image kick up to the offside |1.6| | 2 |
| Offside Front Front shock absorber seal failed and leaking oil |2.3.3| | 1 |
| Rear Floor brake test indicates a binding brake |3.3.C2c| | 1 |
| Offside Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Horn not loud enough to be heard by another road user |1.7.3a| | 1 |
| Front Brake performance not tested |1.2.1 |g|| | 1 |
| Rear Brake performance not tested |1.2.1 |g|| | 1 |
| Rear Brake disc fractured |1.1.14 |a| |ii|| | 1 |
| Front Brake disc significantly and obviously worn |1.1.14 |a| |i|| | 1 |
| Front Brake caliper has no reserve travel and braking performance affected |1.1.16 |e| |ii|| | 1 |
| Front Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Brake excessively binding |1.2.1 |f|| | 1 |
| Rear Shock absorber has a serious fluid leak |5.3.2 |b|| | 1 |
| Fuel cap ineffective |6.1.3 |b| |i|| | 1 |
| Drive chain so worn it is likely to fail |6.1.7 |c| |ii|| | 1 |
| Drive chain sprocket so loose it is likely to fail sprocket cush drive |6.1.7 |c| |ii|| | 1 |
| Throttle operating incorrectly |6.2.7 |a| |i|| | 1 |
| Drive chain worn to excess |6.2.1e| | 1 |
| Rear Drive chain sprocket worn to excess |6.2.1e| | 1 |
| Nearside Rear position lamp does not illuminate immediately when it is switched on |1.1.3a| | 1 |
| Steering headbearing has excessive free play |2.2.2| | 1 |
| Nearside Fuel system component leaking |7.2.1a| | 1 |
| Front Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Rear suspension bush has excessive free play |2.4.A2a|i|| | 1 |
| Rear suspension movement is excessively stiff |2.4.A.3b| | 1 |
| Offside Front wheel spindle securing nut|s| loose |2.3.3a| | 1 |
| Offside Footrest insecure |6.2.1a| | 1 |
| Front Direction indicator missing |1.5.1a| | 1 |
| Front Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Brake pedal has inadequate reserve travel |3.1.3b| | 1 |
| Front Brake hose excessively kinked |3.2.B3a| | 1 |
| Rear Direction indicator incorrect colour |1.5.1b| | 1 |
| Front Brake hose stretched by suspension movement |3.2.B3b| | 1 |
| Front Brake hose is likely to be fouled or trapped by moving parts |3.2.B2c| | 1 |
| Rear Hydraulic brake control feels spongy |3.1.4a| | 1 |
| Rear suspension bearing has excessive free play |2.4.A2a|i|| | 1 |
| Throttle has a significant change in engine speed whilst moving the steering from lock to lock |2.1.4| | 1 |
| Rear Roller brake test indicates brake effort rise disproportional to brake lever or pedal effort |3.3.A1c| | 1 |
| Rear Brake master cylinder insecurely mounted |3.2.B1a| | 1 |
| Rear Brake disc|s| excessively pitted |3.2.A1l| | 1 |
| Direction indicator flashing less than 60 times a minute |1.5.1c| | 1 |
| Nearside Direction indicator not working |1.5.1c| | 1 |
| Offside Direction indicator not working |1.5.1c| | 1 |
| Rear Rear suspension bush excessively deteriorated |2.4.A2a|i|| | 1 |
| Nearside Front Brake disc|s| friction surface contaminated by oil or grease |3.2.A1k| | 1 |
| Front Fuel cap mounting flange/sealing method defective |7.2.2c| | 1 |
| All position lamps do not illuminate immediately when switched on |1.1.3a| | 1 |
| Offside Front Handlebar mounting clamp bolt loose |2.1.1a| | 1 |
| Nearside Front Brake disc|s| excessively scored |3.2.A1l| | 1 |
| Offside Front Brake component leaking fluid |3.2.B4| | 1 |
| Rear Rear wheel rotation likely to be impeded |6.2.1b| | 1 |
| Offside Steering control has Insufficient clearance at full lock affecting the riders grasp of handlebars |2.1.2b| | 1 |
| Nearside Front Direction indicator not working |1.5.1c| | 1 |
| Offside Steering lock stop ineffective |2.1.3| | 1 |
| Wheel alignment incorrect which adversely affects the steering |2.5.1| | 1 |
| Rear wheel spindle securing nut locking device missing |2.4.A.2b| | 1 |
| Exhaust is leaking and excessively noisey |7.1.1b| | 1 |
| Front Headlamp incorrect colour |1.2.1| | 1 |
| Rear Brake disc|s| is excessively distorted |3.2.A1m| | 1 |
| Drive chain sprocket carrier worn to excess |6.2.1e| | 1 |
| Front Front wheel bearings are excessively rough |2.3.5b| | 1 |
| Offside Handlebar deformed |2.1.1b| | 1 |
| Front Front position lamp does not illuminate immediately when switched on |1.1.3a| | 1 |
| Front Front mudguard insecure |2.3.7| | 1 |
| Steering lock stop maladjusted |2.1.3| | 1 |
| Offside Front Direction indicator damaged and function impaired |1.5.3a| | 1 |
| Rear Stop lamp does not illuminate immediately a brake applies |1.3.1a| | 1 |
| Rear Roller brake test indicates a sticking brake |3.3.A1a| | 1 |
| Front wheel bearings have excessive free play |2.3.5b| | 1 |
| Steering movement excessively `notchy` with the wheel raised |2.2.1b| | 1 |
| Throttle operating incorrectly |6.2.1f| | 1 |
| Rear Brake excessively binding (1.2.1 (f)) | 1 |
| Rear Shock absorber has an excessively worn bush (5.3.2 (c)) | 1 |
| Front Brake hose excessively twisted (1.1.12 (b) (ii)) | 1 |