xcolt45

[:@] why am I only get 12.5 mpg... on a v6...
I mean i drive it hard.. but not all the time...
and it makes no sense to me
12.5 it pisses me off
and when I drive "correctly" the best i can get (of up to 3 days of doing this) is 15 mpg

-Colt

Kriger

could you be doing bad math?

1) Stop for fuel at a gas staion, at a certain pump. remember how you parked.

2)record mileage and then fill up all the way. do not overfill, when it shuts off your done, dont force more in.

3)Go drive and use that tank, the less you have left the better.

4)Repeat number 1 and park in the same spot the same way.

5)record mileage again and fill up.

6) take the difference in mileage from your first reading to your second and divide that by the amount of gas you just put in the car.

Example: 1st mileage reading 1000
2nd mileage reading 1400
difference of 400 miles divided by (the amount of gas you just put in) lets say 15gallon

400 divided 15 = 26.66 miles per gallon

DAVE05GT

Are you sure there's only 6 spark plugs? If its brand new you may want to let it get broken in a little, they usually get better.

jthorn9

Yea dude new engines do burn more gas, but if this continues you better go see Ford. Now I hope you know you aren't going to get 28mph as advertised, more like and adverage of 20-24 mph on a fillup unless you do a lot of road time (not highway), then your numbers will go way down. Just to let you know I adverage between 20-22mpg.

Orion_240

Are you spending lots of time at stop lights?
After playing with the onboard MPG computer I found that I get ok mileage until I hit a stop light and then it drops like a rock! So in my GT I can get it up to 23 mpg when driving but after just one long light it can drop down to 16 or 17.
Try the old fashioned way but if your gas tank is defective, like so many Mustangs, you might not be able to fill your tank up to the same level each time!

Ebein

I got 25.1 driving from Raleigh to DC after changing the oil at 500 miles. Around town I average 16.8 but I have a heavy
foot and lots of stoplights. I'll see what I get tonight on my DC-Raleigh NC commute now that the car has 5000 miles.

bahbahblacksheep

a little hard on the accelerator?

Dude, keep track of your mileage by keeping track of the miles you drive between fillups and then by how much you put into the gas tank. Then calulate. Maybe the computer is off. 12.5 is a bit extreme. I'm getting 23.5 on average (and that includes some spirited driving)

chris2k

Im also getting only 12-15 mpg max on my v6. [:@]

I calculate the mileage always the same way, exactly how bahbahblacksheep explained.

Lawman165

I'm getting over 20 mpg in the GT when I drive normal. Something is not right.

jtscuba02

ebein, your from raleigh? im here in hope mills. have you taken your car to get a tune yet? there is a good shop there in raleigh.