Volkswagen LaVida didn't cover the throttle properly.

If there is no gasket, it may cause air leakage.

It will lead to poor sealing of the throttle valve, and the vehicle may have unstable idle speed and insufficient power. Long-term use will lead to excessive carbon deposition in the cylinder, increased fuel consumption and decreased power.

Restore the throttle. Fastening screws shall be tightened at the corners. Finally plug in the power supply. Just align and compress the air filter assembly.