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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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Old 02-20-2015, 10:00 PM
marjam54 marjam54 is offline
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Location: USA
Join Date: Sep 2014
Posts: 25
Mein Auto: 2000 BMW 323i
Does anybody know how many highway miles a 2000 323i can go?

On a full tank of gas? My gas gauge is not working and we are going out of town so trying to figure out how far I can go. Thanks!
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Old 02-20-2015, 10:12 PM
bagdropper bagdropper is offline
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Location: Iowa
Join Date: Aug 2013
Posts: 60
Mein Auto: 2006 X5 3.0i & 2002 325i
Fill your tank completely full right before you leave town, reset your trip odometer. Drive approximately 100 miles, then fill it back up completely full. Miles/gallons gives you a pretty good idea.

I own an 02 325i. Most miles on a single tank went 425 miles on 14.5 gallons last December, and have gotten a shade over 30 quite a few shorter trips. Cold weather mpg drops considerably though, but I'd think 350 should be doable if you have a 16 gallon tank and the car's running fine.

But get a good idea by doing the math. Even 50 miles should do the trick.
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Old 02-20-2015, 10:31 PM
marjam54 marjam54 is offline
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Location: USA
Join Date: Sep 2014
Posts: 25
Mein Auto: 2000 BMW 323i
Ok, thanks very much!
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Old 02-21-2015, 03:35 PM
GoForthFast GoForthFast is offline
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Location: New York
Join Date: Jul 2004
Posts: 2,630
Mein Auto: '04 330Ci 6-speed
If you're conservative on the highway, I was on the way to a reliably projectable 550 miles on one tank but I didn't want to stress the pump in hot weather, nor run out of gas out in Utah.

Don't push it that far with no gas gauge!
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Old 02-21-2015, 06:34 PM
alpinweiss alpinweiss is offline
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Location: Nuevo MÚxico
Join Date: Sep 2009
Posts: 1,668
Mein Auto: E46, E83, E90 (all MT)
If the highways are dry and the temperatures are moderate, 300 miles between fill ups should give you a reasonable margin for error.

If the highways are wet or snowy, your mileage will drop. Cold weather will also reduce your mileage. Perhaps a reasonable distance would be 200 miles between fill ups under any of those conditions.

These numbers are a bit on the cautious side, but I hate walking with a gas can....

E46, E83, E90 (all with three pedals)
BMW CCA member

Last edited by alpinweiss; 02-21-2015 at 10:24 PM.
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Old 02-21-2015, 07:05 PM
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Fast Bob Fast Bob is offline
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Location: Here, there, everywhere....
Join Date: Jun 2004
Posts: 35,738
Mein Auto: 2004 330Ci ZHP 3 pedals
Fuel up when you drop to 1/2 a tank (or after 150 miles)....this is a good practice to get into, for many reasons....
The road goes ever onward....
(R.I.P. Jever)

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When faced with choosing between two evils, always go with the one you`ve never tried before....
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