AdBlue consumption

Hello together, wanted to ask you how much AdBlue you spent on your Ford Ranger 3.2 or 2.2? I asked me the question because I bought only 40L in March, and they were used up today and I have to stand and buy again… Well, it’s not expensive now… With me at work cost 40L full 4,40€ (brand Hoyer or how it is written) so… But now, on average, my 3.2 Wildtrak consumes 2,8l of 1000km AdBlue… What seems a lot to me… Have filled 13,000km down with the big one and 35L already… Can one of you ever call his cut?!