Discussion Starter · #1 ·
I don't know what I am doing wrong. I drive 40 miles one way to work and I drive fairly flat roads. I monitor my MPG and they are different between the morning and night. In the morning I can average between 43-44 MPG and at night I average between 36-39. I don't understand the difference. I do drive different ways to and from work. Old military habbit of driving different paths. Both drives are around 40 miles and a large portion of them are flat roads. I just dont understand what is different. I do run the cruise control at 60 mph. Any thoughts?