I have a 2000 Z28 A-4 maro. I filled it up the other day and then set the trip. I'm just about ready to fill up again and I have 304.7 from the time I filled up. is that good ?

David,

 

Better than i ever got.........how big are our tanks? If it matters mine is an 02. Usually i fill up at about 225 and i don't drive to crazy either.....i pushed it once and i wanna say 250-260 miles i think. From a past post......i think it was in the lounge but they had a most miles/tank and least miles/tank thread. I think u win most miles........u sure it wasn't 204.7? How did u drive the car that whole time?

 

That's pretty good mileage. I will get about 310-320 when driving in a "non-sprirted" manner. If my foot gets really heavy, 220-250.

The tanks are 16.8 Gal.

 

I wasn't realy on it at all, but I did have the fule injectshion cleaned last week. like I said I set the trip at a full tank topped off & have a little bit more to go with 304.7 miles. dose that not sound right ?

 

Now, cam it and stall it

 

I don't think anything is wrong with my car cuz i've always gotten the same mileage since i got it with 9,000 miles.....maybe my gas gauge/sensor is messed up? It's usually real close to the empty line when i fill it at about 220 miles......everytime i fill it i don't think i've ever gotten even 14 gallons in.....and i thought i was pushin it.
U sure its 16.8.......thats what i thought it was but i started to think maybe the V6 and V8 gas tanks were different sizes. anybody else?

 

I thought it was 16.5

 

The owners manual says 16.8

 

My manual said it was a 16.6 gal. tank.(2002)
On steady freeway driving at about 75mph I usually get 360 miles to a tank. Granted, you still have a couple gallons left when it says its empty.

 

in town i get about 225 and highway i get about 340

 

ok my tank is DEF. not 16+ gallons... its no more than 13.5 cause i will run it down to fumes and it has never taken more than 13.3 gallons... and with mixed driving i'll get about 200 miles a tank

 

Tank capacity changed in '99 when they changed to plastic... 15.5gal v/s '99+ 16.8gal. I've definately filled mine up beyond 13 gallons I've seen as high as 30mpg with nothing but highway travel on cruise in 6th gear.

I usually see about 22mpg or so just riding around.

 

I find it hard to get under 300 miles to a tank with city/intercounty. With highway driving mixed in I can get 400 to a tank easy....If you're averaging 220 miles per tank, something is wrong. Have you had your car tuned for your mods yet?

 

Nah, depends on the car (or maybe just the driver?). The most I ever hit was 310 miles, and that was all highway driving (albeit, "me" behind the wheel ) but cruising ~75 mph, with just a little bit of city mixed in.

My "average" mileage per tank is ~230 miles. I've been getting a little lower lately with the 4.10's, but still get about 230. I've seen as low as only 200 miles, but as much as ~260 with the 4.10's on the highway.

304 is good IMO.

 

http://www.pizzaplacetx.com/2002z28mpg.htm
thats with mix of some high speed runs and some city and some highway.. thats almost every gas stop since I bought it new..

your numbers are right on.. average.. the LS1 gas tank is 16.9 gallons.
the LT1 gas tank is smaller and the gas gauge on an LT1 will have you pushing the car if you let the line meet the E. The LS1 is much more forgiving.