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2011 Hemi MPG

9K views 32 replies 20 participants last post by  nek121328 
#1 ·
Hey guys my wife is getting a new one soon and wants the Hemi. What kind of MPG are yall getting in those?
 
#2 ·
reports coming in right at estimated sticker range. someone reported yesterday 19.5 mpg extended highway, we've seen as high as 17.5 mixed reported here. lead foots and heavy traffic getting mid teens.

give her the hemi.
 
#3 ·
Depends on how you drive. I can get up to 23.5 mpg hwy going 60-65 but in the city the highest average was 14 mpg. I drove from okc to Austin Texas and average 21.5 mpg going 70-73 mph.
 
#4 ·
Setting cruise around 70-75 gives me around 21 as well. And since most of my driving is highway that's sweet. Get the Hemi. Or better yet go to your local stealer and test drive what you want with the v6 then yet drive an identical model with a v8. There will be no contest.
 
#5 ·
Thanks for the reports back guys. Yeah we test drove them both and we were highly impressed with the Hemi and thought the v6 kind of lagged and seemed to somewhat struggle pushing the vehicle. I was originally concerned with mpg but 20 on the highway is great, hemi it is.
 
#11 ·
Are you guys quoting actual calculated MPG or what the trip computer calculates? On my 04 WJ the trip computer was showing 23.5 MPG on a recent trip. When I calculated by hand it was more like 20 MPG. Just curious.
 
#12 ·
I know the last 5 or 6 times I've calculated it on my tundra its been exactly the same as what the trip computer said....I was surprised!
 
#21 ·
I've been using 87 for the last month and I just started to feel this...it's a very noticeable roughness when it kicks into 4 cylinder...
 
#18 ·
Dont forget the added expense of wanting to kick yourself everytime you want to pass someone on the highway, tow something, or generally have a better time driving and you realize you should have gotten the hemi. I have never heard anyone complain that their vehicle has too much power but a whole lot complain of vehicles being underpowered.
 
#16 ·
Down the street from me:
regular=2.48
midgrade=2.63

@ 25 gallons we are talking about a difference of like $4 a fill up......I think the hemi's worth that!
 
#17 ·
I use 87. No noticeable difference in my HEMI, 89 is recommended but 87 is OK as well. No difference in MPG or power and I have tried both.

I am getting about 14 MPG city stop and go, 20 MPG HW. Averaging about 17MPG.
 
#25 ·
My 5.7 L V-8 2011 Overland is getting 14.8 average (mixed city and highway) driving on 87 octane. I will be putting this into 89 octane at some point. But, I suspect, it will get .5 - 1 mile better.
 
#26 ·
Milage gets worse as cars get older, I just traded my 08 Limited with the V8 Hemi for an 2011 Overland with the V6. The first two years with the Hemi I would average 19-20 MPG on the Highway at 60-70MPH. This past year it struggled to get 17-18 highway. With the V6 I am getting around 23-25 mpg on the Highway now.
 
#27 ·
Mileage gets better and most engines are fully broken in by 40,000 miles. That should be the best time frame for your gas mileage. If it drops off sharply over the years the car has been neglected or your driving habits/conditions have changed.
 
#28 ·
^^ correct


A drop in mileage can be due to a ton of things such as not changing fluids (diffs, trans, transfer case) causin increased drag. Bearing going on the wheels causing increased rolling resistance. Not changing spark plugs or air filters with oem or better replacements. Even different tire tread can affect this. Your issue of seeing decreased fuel economy vey well may be due to the decreased energy content per gallon of fuel due to ethanol. There is no truth to the idea that engines will have decreased fuel Economy under normal use unless it was neglected.
 
#29 ·
^^ correct


A drop in mileage can be due to a ton of things such as not changing fluids (diffs, trans, transfer case) causin increased drag. Bearing going on the wheels causing increased rolling resistance. Not changing spark plugs or air filters with oem or better replacements. Even different tire tread can affect this. Your issue of seeing decreased fuel economy vey well may be due to the decreased energy content per gallon of fuel due to ethanol. There is no truth to the idea that engines will have decreased fuel Economy under normal use unless it was neglected.
Not sure why I dropped MPG, My Limited only had 13,600 miles on it when traded, it was maintaned regularly did not have a scratch on it and was garage kept.
 
#30 ·
The biggest factor to mileage dropping is the change of fuel blends from "summer" to "winter" and also if a geographic region is dictated (by the government via EPA) to run highly oxygenated fuel. "Winter" blends and highly oxygenated fuel, while providing dubious benefit, very noticeably decreases fuel economy like when someone runs E85 instead of normal unleaded. Probably nothing wrong with the vehicle and simply a fuel blend change for the region, but disconcerting nonetheless.
 
#32 ·
I heard on the radio that going to 15% will take some time, because they have to make changes to the gas stations because of the damage 15% will cause. Makes you wonder how cars that aren't designed for it will do long term.... :mad:
 
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