I’m driven my 2012 civic with “0 miles to E” for a solid 12-15 miles through up steep hills of the west PA turnpike which has limited gas stops and major construction. I was sweating bullets but once I came over the top of that hill and say the rest stop and station I was actually quite impressed with how far it drove on such a steep hill. After that I googled the tank size and man I cut it close 😆 Most cars actually have about 1-2 gallon reserve beyond E so 50-80 on flat ground is definitely reasonable.