FAsnakes

I can't believe i'm even typing this question out.. . but, just wondering - what you're getting for MPG according to your DIC?

I've daily driven my Z06 and pulled 24 mpg over 30k or so miles..
The ZR1 daily driven w/ 11k miles is @ 16.3

Just curious, what the norm is?
Thanks,

K B Vettin

i'm at 13.4

Joezone914

My Z06 on the DIC was 16-17 or 250 miles per tank. My ZR is 12.5-13mpg or 200 miles per tank. Gotta pay to play.

FAsnakes

Woah, you guys are making me feel better.. . Thanks!
The Z06 was nicer w/ the gas.. but the ZR1 is so much nicer as a daily!

timmyZ06

I got like 28-30 mpg on highway with the z06, im hoping something around 24-28 mpg with the zr1???

mirage2991

depends on which trans you have: if you have the original zr1 ratio then you'll get 22. if you have a 2012-2013 without the high perf ratio (aka original zr1 ratio) you should get a bit more, like 24.

C5kid

LOL, after that cross country trip in mine, avg speed of 75mph, avg MPG was 18

The gearing is what kills the MPG in these.

It's hard to believe but in my procharged C5, I could get 34-35mph on the highway. I could drive from my house to the beach, roughly 4hrs and use ½ a tank of gas.

DebRedZR1

Ummm yeah if you if you to ask. Point me in the direction of a ZR1 Owner concerned with MPG
Are you talking city/highway/triple digit driving? Last time I looked maybe 12.1.

ERDOC

It says 12.8 mpg this morning, but almost all my driving lately has been suburban.

pcguy2u

Get 19+ on average and 24+- at 65mph - falls off a bit above 65. Don't go by me though, at 10K miles, the tires are still looking new.

whatcop?

I'm scared to check mine because I have a feeling its in the single digits.

JoesC5

I think the low compression ratio(9.1:1) really hurts the gas mileage when crusing on the highway in 6th gear. The engine isn't as efficient as is the 11:1 CR of the Z06.

The "close ratio" ZR1 transmission has a .67:1 6th gear and the "wide ratio" ZR1 transmission has a .5:1 6th gear(same as the Z06).

Window sticker on the "close ratio" is 20 MPG highway and the "wide ratio" is only 21 MPG. The Z06 is 24 MPG. If it were strictly the gearing, then the "wide ratio" ZR1 should be the same highway MPG as the Z06, as they both would be turning the same engine RPM's at any given speed(both having a .5:1 6th gear).

09Z06pj

That's not gonna happen. Maybe 18 or 19 if you take it easy. But trust me, you won't care.

jvp

Bingo. GM's LS9 and LSA supercharged engines are just not efficient when cruising at highway speeds, unlike their NA brethren. The slightly taller 6th in the newer gearbox will help a little, but that's it.

Count your blessings if you see 20 on the highway.

jas

MickeyD

20.5 here back and forth to work. 2013

mirage2991

lets be realistic: the compression is probably 10% of the reason. The rest is the blower, coupled with the gearing.

pcguy2u

If it's also the gearing, you must be referring to max RPM what are you programming for red line?

whatcop?

He means 6th gear gearing. The cars run about 800 rpms higher in 6th gear at 80mph vs a Z06 or 2012-2013 ZR1.

TWS Racing

Sorry but that's a pipe dream. I think if you drove it like Al Gore you might get 21-22.

I haven't checked mine the last few drives but I'd be lucky to hit 18-19 MPG. I just can't drive for very far without succumbing to the temptation to ease into it and push myself back into the seat and grin The amusement park is open and I have my own personal roller coaster.

jvp

The compression has a lot more to do with it. Humming along in 6th gear at 65MPH, the blower isn't doing much at all. You're basically off boost completely. And yes, the gearing is going to make a difference, but again: it's not as much as you'd think.

It's a compression and tuning issue, mostly.

jas