What is the increase in fuel consumption after Regal maintains and cleans the throttle?

Apart from the increase in fuel consumption, I wonder what is the difference between your car and before maintenance? Such as idle speed, engine noise, etc. This situation may be caused by no re-matching after cleaning the throttle. If it is confirmed that there are obvious differences before and after maintenance, I suggest you go to the 4S shop to re-match it and let the computer learn. This project is simple to operate and should be free of charge. In addition, generally speaking, it is normal that the fuel consumption fluctuates around 1L under different driving conditions.