If I have to drive 140 miles a day (round-trip), 5 days a week, no traffic, 65-80 mph, single lane so I have to drive fast to get around slower cars, combined reported MPG is 44 miles per gallon and it’s a 13.2 gallon tank (right?), at $5/gallon, how much should each 140 mile trip cost me? I know it depends on driving style, but what was concerning was that it seemed almost half a tank got taken up by 1 trip, which is like an ICE car.

My calculation is 140 miles /44 mpg = 3.18 gallons for the whole trip Now 3.18 gallons/ trip x $5/gallon = $15.90 /round-trip

It seemed more like nearly 6 gallons were used up maybe 5