help,,,, my car drinks so much

hello you love,, I have nn e11 build year98 G6,,,,1,4!!!! I love my toyota totally but meanwhile he has a huge sprit consumption and I am really so desperate that I think about giving it off!!! I’ve been driving it for 8 years,,,, can always rely on him,,, but at the sprit I’m going to be crazy with him!!! he consumes about 10-12liter…. so come barely 400km with a tank filling!!! what can that be??? hoses are all ok!!! filters too…. and yours too. I don’t have a lead foot….so no more, laugh!! would be nice if I got some answers, lg bumblebee