What causes the jerking when shifting from first to second gear in an Audi A3?

[McSavannah]

Audi A3 jerking when shifting from first to second gear can be attributed to the following reasons: Improper clutch and throttle coordination: For manual transmission vehicles, jerking during gear shifts is often caused by improper coordination between the clutch and throttle. Mismatched transmission gear ratios: For automatic transmission vehicles, jerking during gear shifts is usually due to mismatched transmission gear ratios. During gear shifting, it's important to maintain the engine speed at a relatively stable level to reduce shift shock. Solutions: Generally, the optimal time to shift gears is when the engine speed reaches 2000 rpm. Shifting at too low engine speeds may cause the vehicle to stall, while shifting at too high speeds may result in jerking movements. The shorter the shift time, the more stable the engine speed will be, thereby reducing the likelihood of experiencing jerking sensations.