As the titles says, I'm completally confused. After driving 147,7 km (85% highway 15% urban) and applying ALL hypermileage tips (no AC, windows closed, using cruise control, approx 10 km/h BELOW speed limit, no braking, 5th gear nearly everywhere... And I spent a total of 12.86 L. That is 8.7 l/100km of 95 octane gasoline (27.04 MPG).
I just don't know what am I doing wrong, I drive an american-made Chevrolet Evanda RTX (133 hp). Last week I've got 33 MPG in another trip, and for some reason this one went better than that one I made today.
Any advice?
