How do cars measure fuel level accurately when the fluid is constantly sloshing around?

Question

How do cars measure fuel level accurately when the fluid is constantly sloshing around?

In: 2855

Answer 1

Some of these posts are correct.

Older cars you *could* watch the fuel level change as you accelerated or braked. Newer cars would have a delayed reaction to the output from the float to minimize this, and baffled tanks to cut down on sloshing.

However – cars in the last few years have started to not actually measure the level in the tank constantly. Instead they monitor driving behavior and guesstimate the amount left based on MPG usage. So it’s not a direct tank-to-gauge display of fuel remaining, instead it’s the computer telling you how much it thinks is left.