Why is it that the first half of the gas tank empties slower than the second half?

Answer 1

It doesn't, but the gas gauge seems to say it does. It's a fault inherent in the way the gas gauge registers the level in the gas tank. Rather than a perfectly linear reading pattern, it gives a curved-graph reading, as though it is accelerating. Don't some newer or more expensive cars have accurate digital readouts, or haven't they invented that item yet?

Answer 2

It doesn't. Gas gauges just aren't very linear. Most of them say empty when they're still 20% full so you won't run out.

Answer 3

because not all the fuel burns up,some of it returns on the return
line into one of the fuel tank,that's the tank that has more fuel