Gas Mileage?
Thread Starter
Staging Lane
Joined: Apr 2005
Posts: 59
Likes: 0
From: Pittsburgh, PA
Gas Mileage? Car: 99 Z28 M6
I have had this car for about 2 weeks, and am averaging about 12 miles to the gallon :-/. I am not driving it that hard but the things seems to be guzzling gasoline like there is no tomorrow. I have a skip shift eliminator. should i shift to fourth when it tells me to? Something in the motor has to be off, cuz I have heard averages way higher than 12. Any suggestions? Thanks!
I have had this car for about 2 weeks, and am averaging about 12 miles to the gallon :-/. I am not driving it that hard but the things seems to be guzzling gasoline like there is no tomorrow. I have a skip shift eliminator. should i shift to fourth when it tells me to? Something in the motor has to be off, cuz I have heard averages way higher than 12. Any suggestions? Thanks!
TECH Fanatic
Joined: Apr 2005
Posts: 1,231
Likes: 1
From: Just This Side of Damnation
I just filled up today with 14 gallons. That tank had about a quarter tank of 65-ish highway and the rest in the city. I wound up with 20.75 mpg.
When I first got mine I put a couple of tanks of fuel system cleaner through it as soon as I got it, changed the oil, new filters, etc. Then went out for a couple of hours on the open highway at about 70-ish. I got 26mpg on that. I have the A4 and a 3:23 gear.
I'd say put a couple of tanks of cleaner through it and do the usual tune up things. Then drive a while on the hwy to see what your base/best mileage can be. Then work your way down from there.
Just my opinion.
When I first got mine I put a couple of tanks of fuel system cleaner through it as soon as I got it, changed the oil, new filters, etc. Then went out for a couple of hours on the open highway at about 70-ish. I got 26mpg on that. I have the A4 and a 3:23 gear.
I'd say put a couple of tanks of cleaner through it and do the usual tune up things. Then drive a while on the hwy to see what your base/best mileage can be. Then work your way down from there.
Just my opinion.
id check those plugs....thats what was wrong with mine...i was gettin MAYBE 140 in the city on a FULL TANK!!!...i was like wtf....i know i have a cam but damn.....changed my plugs and added prestone fuelinjector/intake valve cleaner and it jumped to 210
I second the plugs. I bought a new to me Dodge Ram with the 5.9 V8. I knew it wasn't gonna be great on gas (understatement of the week) but it was bad. I thought about the number of miles on it 40k or so and figured it probiably had the original plugs in it. Sure enough yep it did. I replaced the plugs and it went from getting maybe 270 miles on a 25 gallon tank to about 315 or so. Big difference. If you still have the stock platiums ditch em and go with a non platium NGK or something like that. Change em once a year for $30 or so can't go wrong really.
TECH Apprentice
Joined: Sep 2002
Posts: 366
Likes: 0
From: west coast
Originally Posted by SStheBest
hes right...IRIDIUMS are the best way to go...AC delco iridiums at that....damn 7.00 s plug 
