These rumors of gas being $4+ per gallon this summer have got me thinking about fuel economy. The DIC in my '06 GP says I get about 22 MPG. Most of my driving is on streets where the speed limit is 45, but they are still city streets so I have to contend with annoying traffic lights, etc. The website fueleconomy.gov says that an 06 Grand Prix should get 21 MPG on average.

It'll take me a while to determine the MPG of my car "manually" myself, but I'm just wondering what kind of MPG all of you have experienced with your GPs. Also, have you ever figured it out using your miles driven and the number of gallons of gas used (zero out your trip OD at fillup, then the next time you fill up, note the mileage, and use the number of gallons of gas you just put in the car as the number of gallons used), or do you just believe the computer?

Consider yourself lucky, I get about 15mpg around town.

I don't have the digital DIC in my car so I calculate mine manually after every time I fill up using the trip odometer.

One thing you can do to help your gas mileage a little is try and get the car into 4th gear when you are traveling down roads with a 45mph speed limit. My car goes into 4th around 48mph and I can use it to hold my speed around there at only 1800rpms.

my GTP gets 25mpg running around town in Perf. Shift mode with just a CAI, i love it to death, i also fill my car up each and every week (i have since i bought it)

around town i get maybe 14mpg, my DIC says 17.6 but im on the highway alot.

i put $25 in my tank everyday, it sucks. but i cant find it in me to get a different car

DIC reads 23.4 and it goes up each time I take longer trips and stay out of the pedal.

the dic pulls an average of the last 500 miles you have driven so it isnt very accurate at actual fuel consumption.

The most accurate method is to tally up the gallons used at fillup.

my gt gets 20 flat no matter what I do.

17-18 city and 19-20 hwy, gosh i need to replace my o2

I'm getting 22mpg according to the DIC. A friend at work gets 25mpg in his colorado and 26mpg in his 99 vette.

17 city and 30 highway. just a k&n filter.

well i havent checked in a while, but a co-worker that lives by me told me about a different way to take to work on a 55 mph road instead of the 70 mph hwy 35, he said he gets the best mileage if he keeps the tach below 2000, so ive been taking that way now and i have noticed an improvement on the day i need to refuel if i dont do much else but go to work and back

I get about 17-17.5 city, and about 23 highway...not sure why. Maybe because I'm not content with cruise control because someone always has to be passed...I'm anxious to get some mods in thought to improve gas mileage.

28 highway, city varies from 18-22 depending on driving conditions. My DIC sits around 24 mpg most of the time, I'm not unhappy with that average.

citys crappy because how i drive maybe 15 mpg....highway i get 29 mpg but around the 75 mph range any higher or lower and my mpg drop....basiacally because its around the 2500 rpm range and that seems to be the best for my car and what mods i have

gosh everyone here is lucky but me !!!

Not luck, you haven't taken the the steps to increase it, as you just mentioned above. Also, tuning the car will help exponentially!

I get avg of 22 on a full tank to empty, with mixed driving.