matt_SS_205

I have a SS/SC and i drive it hard, i get atleast 30, if i take it easy i can get 35, i've been pleased with that.

R&C_rallySS

[QUOTE=djcasper_bpm;735129]in the winter i get around 19 to 20 mpg. in the summer i get around 24-26, and thats with all the mods..[/QUOT]

Right on the money.

REDFOCZ

Right now I am sitting at a half a tank with a 175 mile so far. My ruff math is around 26 MPG 90% city driving and only 10% highway.

synapse82

I think the reason it may be lower is because you're looking at your DIC. If you've never reset it then that is the average MPG over all miles you've driven. If you reset it every tank of gas then it is the average over that tank of gas.

In all city driving and here and there decent pulls, this winter I've gotten about 24mpg. That's also with letting the engine temp warm to 100 before i go anywhere.

cobaltcruisin

3k on my Odometer and I get 20 mpg 92-93oct. 100% city driving.

SpoiledAlice

I get around the same with my LT. Is yours a manual?? Mine is.

rolsen55

After 12,000 miles I'm at 31.2 mpg overall (I keep records). I've seen 36 on the highway on a long highway trip @65. The only thing I have done was put synthetic oil in at 3,000 miles. I have run 91 octane the last 4,000 miles or so and I don't think it has helped with milage, but the car is peppier when I'm running it. I'm a fairly slow accelerator 99% of the time.

ssnonsc

i get around 22 all the time i havn't checked the real imperial # latley but metric it is about 10.2L/100km

FinalBreath

Ive never gotten anything higher than about 21 no matter how i drive

NKs07CobaltSS

If it cold there and you start your car to warm it up it will lessen your fuel milage so also does using the heater. This week i only got 23MPG but its cold out now! and i heat my car up for 10 min before driving each morning. Just a thought FYI I lost gas milage with GMPP Stage 2 as well!

Not at all my experience i gained 5mpg just by switching to 91octane from 87 consistantly!

I'm gonna say that Altitude and climate can change fuel milage as well!

stlurbanpunk

you lost me on that one... I thought the HVAC blower just pulls the heat off the engine...

Eco_Junk

Heat doesn't use more fuel. If anything its better because it cools the engine a little by routing some of that hot coolant into your heater core, which in turn acts as a heat exchanger, cooling the engine.

Warming an FI car up just lowers the gas mileage. You can drive after about 10 seconds in winter. Just enough time for the oil to work up to the head(s) (assuming its non synthetic). Then just drive it slow until the computer switches to closed loop and your fine. You know your in closed loop when the coolant temp is about 180-190* and in an automatic, the TCC (torque convertor clutch) kicks in at just about 40 mph, which acts like a 5th gear in the 4T45E. Then let her RIP!!!