1st bar loss for 5 door hatchback ...

[Hershey]

Originally Posted by yaris-me

You should record your gas fill up and mileage to see what kind of mileage you're actually getting. I'm sure the shape of the tank has something to do with what's happening, but your true gas mileage will tell you if something is really different.

keep mileage for both .

[DevilGirl]

Originally Posted by yaris-me

You should record your gas fill up and mileage to see what kind of mileage you're actually getting. I'm sure the shape of the tank has something to do with what's happening, but your true gas mileage will tell you if something is really different.

Originally Posted by Hershey

keep mileage for both .

So overall, are they about the same MPG with each fill up?

Or is there a difference too?

Is it the same person driving both vehicles on a consistent basis?

Various factors involved. Driving style being a large one.

[Sidicas]

My guess: Having a gas efficient car in the car dealership lot is harder to emphasize when it doesn't always have a full tank. So by making the first bar indicate a larger quantity of fuel than the other bars, it's easier for the dealership to keep the car driving around all day long on test drives while appearing to always have a full tank..

Just my guess.

[127.0.0.1]

Originally Posted by Sidicas

My guess: Having a gas efficient car in the car dealership lot is harder to emphasize when it doesn't always have a full tank. So by making the first bar indicate a larger quantity of fuel than the other bars, it's easier for the dealership to keep the car driving around all day long on test drives while appearing to always have a full tank..

Just my guess.

no that is not how it works.

-----

the float is pressed up to the top on a full tank. it is drowned in gas. and more gas needs to be
consumed before the float falls. once the float drops, then the gauge is very accurate. 1/2 tank on gauge = 1/2 tank really left.

the first bar takes a long time to drop because of 'float drowning'

in-tank radar or sonic detectors (used to check fluid levels in all sorts of industrial tanks, a lot
like bumper backup detectors)
would be more extremely accurate but pricey. hence, the old school float is still used today.

in-tank radar is used in some breweries and refineries to detect levels. also used in
fuel delivery systems. I modified a collision detector to tell me how much water I have in the
boiler on my 4-4-0

[Goose]

If it helps at all, I've noticed that the auto doesn't coast well either. The alignment and pressures are fine.