mpg's with a 3.92 rear end

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Black Cloud

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Oxford, PA
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2012
Engine
Hemi 5.7
I've had two 2012 CC's this year. The first one had 3.55's and I got 16 - 16.5 with it(mixed driving-some highway and some city). The current one has 3.92's and I'm doing about 16 average. All the same options on the truck other than the gears.
 

PostalTwo

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Edmonton
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2014
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hemi
I got 14.2 MPG on my first my second was 15 mostly city driving
 

BlackedOutHemi

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On my 2012 CC with 3.92 rear end I'm getting an average of 15-16 mpgs. But, I tend to have quite the heavy foot while driving. I don't like people getting ahead of me. Lol.
 

MT Hillbilly

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MT
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2010
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I also am interested in the 3.92 mpg in real life

I just upgraded my 2011 slt 3.55 ratio to a 2012 laramie 3.92, I also would like to hear some info on the performance differences, and mpg tricks. I know when I bought studed winter tires for my slt, the milage went down from average 19 mpg (for my mixed driving of small town (no stoplights) 35 mph and 70 mph out of town.) to 16 mpg. If I slowed the slt down to sixty on the hwy it got me up into the 23 mpg range.
 

Black Cloud

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2012
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Hemi 5.7
Started doing the math instead on relying on the evic for mileage. I am getting more like 14.8 - 15.4 with the 3.92's. Definitely down from where the 3.55's were. Feels a little nicer off the line so I guess it's worth it: but driving all the miles I do everyday I would sure like to get more. I'm not sure yet but it also seams to do worse with the level kit.
 

Peattie

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Las Vegas
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2012
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Hemi 5.7
i got 16.5 last fill up with mostly highway driving because school is 30 miles away lol
 

WhiteExpress

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Midland, TX
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I'm not sure yet but it also seams to do worse with the level kit.

You tweaked the aero of the truck when you removed the factory rake. I wouldn't be surprised at all to see a decrease in MPG with a level and nothing else.

I've got 3.55s and over the last 22k I've averaged about 17 MPG mixed city / highway.

That being said, I'm still thinking heavily about R/T 4.1s
 

MK12RAM

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Georgia
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2012
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5.7L Hemi
About 15-15.5 city and highway is around 18-21 depending on how level the road is. Still happy with the MPG's I get with the Ram compared to the Xterra SUV I traded in for the Ram.

Sent from my ADR6400L using Tapatalk 2
 

Texasez

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Dallas tx
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I've got mostly city miles. I'm getting around 14 on the lie I meter.
 

luvatruck

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Florida
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2012
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Hemi 5.7
On my 2012 Quad cab 5.7 3.92's I get 19mpg at 60mph, 18 at 70mph and 17 at 80mph. Around town is about 14.5mpg.
 
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