Computing gas mileage

[Speeddog]

It doesn't matter-the car won't take off.

<skeptical>

[Monsterlover]

The OP's formula will work, given the following:

Gas tank was full at mileage A.

Gas tank is full at mileage B.

X, the total amount of gas, is the *total* amount pumped in between mileage A and mileage B.

-------------------------
If you partially fill between mileage A and the fill-up at mileage B, then you've got to add that to the fill-up at mileage B to get a correct value for X.

I agree with this one.

Why would this be wrong Dave?

[Ddan]

<skeptical>

Clearly this only works if you use Mobile 1 too

[Triple J]

I agree with this one.

Why would this be wrong Dave?

That would work just fine.

[stopintime]

Start at 0 miles, drive 300.

Stop for gas, and put in one gallon.

(300-0)/1= 300 miles/gallon.

Wow - excellent mileage - that's what I'll start doing

[Popeye the Sailor]

I agree with this one.

Why would this be wrong Dave?

I said her method is wrong-not the one you quoted.

[DesmoDiva]

 

Thanks guys.   

I don't fill up all the way b/c I think my tank has leak on the top side.

I consistantly put $20.00 in, but the amount varies due to the flucuation in gas prices.

Guess I'll never know my true mileage.   

[Popeye the Sailor]

Thanks guys.   

I don't fill up all the way b/c I think my tank has leak on the top side.

I consistantly put $20.00 in, but the amount varies due to the flucuation in gas prices.

Guess I'll never know my true mileage.   

It's all an exercise in futility if your tank is leaking it out. 

[He Man]

Thanks guys.   

I don't fill up all the way b/c I think my tank has leak on the top side.

I consistantly put $20.00 in, but the amount varies due to the flucuation in gas prices.

Guess I'll never know my true mileage.   

if your riding those 4v 998/999 motors in your sig, then i dont think youd really care to know. those thigns are gas hogs.

[erkishhorde]

Thanks guys.   

I don't fill up all the way b/c I think my tank has leak on the top side.

I consistantly put $20.00 in, but the amount varies due to the flucuation in gas prices.

Guess I'll never know my true mileage.   

That's alright, knowing your mileage won't really change your driving habits, will it? I know when I'm getting poor mileage because I'm speeding. I just don't care. I want to get there faster and don't mind paying a bit more coin to save more time.

[DesmoDiva]

if your riding those 4v 998/999 motors in your sig, then i dont think youd really care to know. those thigns are gas hogs.

The mileage I'm talking about is for my cage.

It's all an exercise in futility if your tank is leaking it out. 

I know.  Just trying to nurse the car through the winter. 

[Vindingo]

The volvo I am borrowing right now has an instant and an avg MPG reading on it and it is very distracting for me.  The instant MPG is fun because I try to see how little I can get.  Slamming on the gas at 5000rpm I get 3.7mpg.  It only goes up to 99.9mpg which is easily obtained by coasting.  I had to change the info to exterior temperature because I was watching the MPG and not the road. 

[NAKID]

The MPG display in the wife's VW does the same thing, although it goes down to 3.4 (reading the manual shows that it is the lowest reading it will show). Coasting downhill will show 160mpg+, but it quickly goes to ---.
Stomping on the gas in sport mode, I'm not sure I'd want to know how fast the 4.2 V8 is sucking the gas down...