Is the fuel consumption of my 07 Chevrolet Cheng Jing 2.0 close to 16 normal?

It must be abnormal. The landlord is advised not to move any parts for the time being. First, change to several gas stations to refuel, adding about 100 each time, and don't add more. Then, comprehensively see if there is a gasoline problem. There is a gas station downstairs, and a mini-car has run out of no.22 oil. If it's not the oil, I'm not sure, let's start with the cheap one. Check whether there is too much oil, spark plug, throttle valve and high-voltage coil (I don't know what is the difference between Cheng Jing and my Elysee, this thing can be returned if there is no problem). If there is no problem, check the cylinder pressure. If the cylinder pressure is insufficient, it is a pity that the landlord will change the cylinder gasket to grind the cylinder. It is what we usually call overhaul.