I have had my 2012 Premium V6 Auto w/3.31 for four weeks, and now that it had 1900 miles, it was time to drive from NC to NJ. Awesome ride on Sunday with no traffic. I was wondering how the following RPM cruising in 6th gear compare to a 2011-12 Auto with stock rear gears:

MPH-RPM
60-1750
70-2000
80-2250
90-2500

MPG...
I got the same 23.8 mpg (dashboard readout- math slightly higher) as I have been averaging during break-in at home. Thought it would be higher. However considering my avg speed/rpm, I am real happy. Made it in time for Q2 of SuperBowl
Kevin

 

thats what my 5.0 is getting highway

 

Figured that would be what a lot of members would say. I'm hoping that it was a heavy foot and not being fully broken in yet.

Filled up and measured today commuting 70 miles mostly highway and was getting like 27mpg while driving speed limit (but that is not normal). Hoping it gets better as I get more miles on the car. Maybe I need to hurry up and get that CAI and Tune in order to save some more gas

 

I have a 6mt, and was able to get right at around 30mpg driving around 70mph with some spirited sprits here and there. I have 3.73 gears now and am still able to manage 28mpg.

 

I had a rental 2011 v6 vert that was getting 27 mpg. it had 28k miles on it and I spent most of my time trying to jump it.

 

Wow.. not sure of the rpms at speed, but we have a 6'er auto with the stock gears.. she avg around 30-31mpg with the gf's commute.

I took her from South Jersey to FL and avg 34+ and the same on a trip to VA.

Lately she's been getting around 27-28mpg but I think it has alot to do with the winter fuel mix and much shorter commute now.

 

Man I wish my mpgs were that good with 3.73's.

 

I have the stock 2.73's and get around 29 on the highway, but thats at about 75mph. When I first got it I managed 33 on a trip down the AC expressway going the speed limit.

I don't know my exact RPM's but 60 is under 1500 for me.

Your number does seem low, though. My guess is winter fuel mix and that good 'ol "new car lead-foot"

 

It's hard not to mash the pedal with all that responsiveness, but if you use cruise control, good gas mileage is still possible.