Thread: gas mileage

my mpg also sucks, i get approx 17.7 mpg, and if the specs of my car are right and i have a 18 gallon tank, when 13.5 gallons are used its on the line of E, i also dont have overdrive so it only goes up to 3rd gear which is a gas killer, thankyou GM for not making our 4th gearclutch hardened, we're reaping the benefits of our 4th gear splines after 120k

I've been average 15 or so on the DIC all city in my 2002 GTP. While it has been reasonably cold, should I be checking for problems? Or is this par for the course?

so i have an '04 GTP. Only Modifications I've done are a k&n Air Filter and my brother put in a Vortex semi circle spiky contraption (sorry i dont know what its called anymore it was 5 years ago) in the air tube that feeds the engine. As far as gas mileage goes my car does amazing on highways i can drive from Miami to Orlando in about 3/4 of a tank. If i remember the last time i ran a trip meter on the DIC it was about 300. However in this godforsaken city im getting about 13 - 14 MPG with a light foot. Sometimes less if i drive a bit harder. Is there anything i can do to improve that?

so i have an '04 GTP. Only Modifications I've done are a k&n Air Filter and my brother put in a Vortex semi circle spiky contraption (sorry i dont know what its called anymore it was 5 years ago) in the air tube that feeds the engine. As far as gas mileage goes my car does amazing on highways i can drive from Miami to Orlando in about 3/4 of a tank. If i remember the last time i ran a trip meter on the DIC it was about 300. However in this godforsaken city im getting about 13 - 14 MPG with a light foot. Sometimes less if i drive a bit harder. Is there anything i can do to improve that?

sorry for double post not sure why it did that. My brother said that its supposed to improve hp and mpg. throttle body has been cleaned recently and not sure what a maf sensor is sorry im not exactly car savvy. i know some stuff but not everything and usually anything i have to do to it, i take it somewhere to get it done. i havent had any check engine lights yet so not sure about spark plugs so far i have 56k miles approx.

I changed my plugs / wires and am only getting 22.9 mpg highway. Used to be higher...I posted 21.3 above, but meant 23.1. Mileage has been dropping about a tenth of a mpg at a time over a few months. Wonder why the slow decline, even after new plugs & wires?

Steve

Originally Posted by Fivefingerdeathpunch

I wouldnt worry.

I just hit 125 miles on this tank, already used 10.8 gallons and just hit the 1/4th tank mark. I drive all city, less than 7-8 miles most days. I bet I waste half my tank from idle time.

Cool. I'm about the same range with an additional trip to and from the gym most days. It's decent on the highway. Driving from Chicago I want to say I was around 24. I didn't buy a supercharged car and expect awesome gas mileage.

Keep it under 2k rpms when maintaining speed.

And hit the catalytic converter when it's cold, any rattle means you should replace it

Originally Posted by Fivefingerdeathpunch

Might be another issue. Depending on age of the car it might need somthing else. Could be a o2 sensor or the cat converter giving bad readings to the rear o2 causing more fuel to be burned. Drive the speed limit or under and increase mpg by alot aswell. Its truely hard to figure it out over the internet.

I drive the speed limit on my daily commute of only 11 miles one way over rolling country. May try the O2 sensor.....easy enough to do.

Thanks,

Steve

i'm right around 23mpg right now which is up from the 17 or so that i was getting a few weeks ago