# I HAVE A 2003 GMC ENVOY. I NEED TO KNOW HOW MANY MILES CAN I DRIVE BEFORE THE GAS RUNS OUT ON A FULL TANK?

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There is a book publish by the govnt or minister of transport on the exact milage as well if you know how many liters or gallons go in your tank like 80 liters and the gas is 1.00 a liter it cost \$80 for 80 liters on a full tank you do 500 km but make sure proper conditions of 100km a hour tires all proper equal pressure the wind is also a facture there is a lot involved to calculate your gas proformance as well if you had a oil change done latly you can find out on a govt site for gas consuption or consumers report

Posted on Dec 31, 2010

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Answering that is a whole lot like trying to define how high is up.

Is the car equipped with a trip computer? If so, it'll probably have a readout for "Range".

Failing this, fill the car completely full of gas and make a note of the starting odometer reading (including tenth's). Drive for some distance (say 100 miles) and refill the vehicle as before. Make a note of how many gallons you put in on the second fill up (including tenths).

Now get the ending odometer reading (including tenth's). Subtract the starting reading from the ending reading. This is the actual miles driven. Divide the actual miles driven, by number of gallons of fuel used (including tenth's). The result will give you the miles per gallon you are getting from your car. As an example, if you drive exactly 100 miles and when you fill it up it holds exactly 5 gallons, then you have gotten exactly 20 miles per gallon. Check your owners manual to find the capacity of your gas tank. Again, as an example..if you got 20 miles per gallon and you had a 20 gallon tank, you could drive a theoretical 400 miles.

The key word here is theoretical. Many variables come into play. Weather conditions (head wind, tail wind, rain, snow, etc.) as well as driving habits (smoothly accelerate from start versus "jack rabbit" starts, speed at which you drive, etc.)

Hope this is of some benefit to you.

Posted on Dec 31, 2010

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Posted on Jan 02, 2017

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