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  #13  
Old 06-06-2012, 09:21 PM
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Re: 5.7 guys opinions needed

I got 24 mpg with it on a 40 mile drive, all highway. I average about 16 mpg driving to work and back (in the city).
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  #14  
Old 06-07-2012, 07:23 AM
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Re: 5.7 guys opinions needed

I believe the tick you are referring to is a V6 head thing. The stock V8 is too quiet, I like the sound of the V8 not of a marshmallow. Toyota designed their trucks to sound more aggressive because that's the manly crowd they were trying to appeal to, and their marketing said they would sell more trucks.
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  #15  
Old 06-07-2012, 01:04 PM
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Re: 5.7 guys opinions needed

It costs me about $1200/year more in fuel to run my Hemi Grand than an econo car, but I wouldn't trade it for one. The ~3mpg difference vs the Pentastar is about $600/year and no, I still wouldn't go to a Pentastar. Getting the Hemi gave me a 2-speed xfer case, towing package and a nice looking/sounding exhaust not to mention some serious towing capacity to haul...@ss or whatever else I want to haul.
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  #16  
Old 06-17-2012, 10:44 AM
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Re: 5.7 guys opinions needed

I don't get how all these hemi owners are averaging 16-17mpg in the city. I bought a new 2012 GC with the hemi about 2 1/2 months ago and I haven't been able to get over 14.5mpg in the city and I've been driving easy to see if I could increase the mpg. With my normal spirited driving I've been averaging around 13mpg.

I'm not worried about it but I would like to know if the people getting 16-17mpg did something to their Jeep to make it get better gas mileage?
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  #17  
Old 06-17-2012, 04:09 PM
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Re: 5.7 guys opinions needed

HEMI for sure! The gas mileage isn't really that much worse considering some of the V6 owners actual numbers. The most disappointing part of the HEMI is the horrible tranny which kills that performance numbers it is capable of.
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  #18  
Old 06-17-2012, 07:08 PM
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Re: 5.7 guys opinions needed

Quote:
Originally Posted by Go Gators View Post
I don't get how all these hemi owners are averaging 16-17mpg in the city. I bought a new 2012 GC with the hemi about 2 1/2 months ago and I haven't been able to get over 14.5mpg in the city and I've been driving easy to see if I could increase the mpg. With my normal spirited driving I've been averaging around 13mpg.

I'm not worried about it but I would like to know if the people getting 16-17mpg did something to their Jeep to make it get better gas mileage?
I find all the roads in town with less traffic and the least amount of stops.
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  #19  
Old 06-17-2012, 07:50 PM
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Re: 5.7 guys opinions needed

Quote:
Originally Posted by jeep2011 View Post
HEMI for sure! The gas mileage isn't really that much worse considering some of the V6 owners actual numbers. The most disappointing part of the HEMI is the horrible tranny which kills that performance numbers it is capable of.

+1
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  #20  
Old 06-18-2012, 12:10 PM
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Re: 5.7 guys opinions needed

I didn't buy mine for performance (otherwise I would have gotten the SRT8), but I'm happy with the power the Hemi 5.7 has on the highway.

I get 15mpg combined on the highway, which I think is fine for a V8.
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  #21  
Old 06-18-2012, 01:38 PM
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Re: 5.7 guys opinions needed

Quote:
Originally Posted by Go Gators View Post
I don't get how all these hemi owners are averaging 16-17mpg in the city. I bought a new 2012 GC with the hemi about 2 1/2 months ago and I haven't been able to get over 14.5mpg in the city and I've been driving easy to see if I could increase the mpg. With my normal spirited driving I've been averaging around 13mpg.

I'm not worried about it but I would like to know if the people getting 16-17mpg did something to their Jeep to make it get better gas mileage?
Don't use the brakes unless absolutely necessary, drive as is you don't have brakes. Use sport mode, the gear ratios are more economical in town. Avoid idling, accelerate promptly to the desired speed, but not aggressively. Avoid routes with stop lights. Park in a heated garage on cold/cool days (use the block heater). Cold weather warm ups are a killer. Use fuel with as little ethanol as possible. Don't use the AC in town, or as little as possible. Put max air pressure in the tires. Use summer tread tires only, stay away from aggressive tires. Avoid short trips.

On quality fuel I've been getting 22 highway, 18-19 combined, 15-16 city depending on temperature and trip length, but its been getting harder and harder to find quality fuel.
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  #22  
Old 06-18-2012, 01:53 PM
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Re: 5.7 guys opinions needed

Quote:
Originally Posted by ColdCase View Post
Don't use the brakes unless absolutely necessary, drive as is you don't have brakes. Use sport mode, the gear ratios are more economical in town. Avoid idling, accelerate promptly to the desired speed, but not aggressively. Avoid routes with stop lights. Park in a heated garage on cold/cool days (use the block heater). Cold weather warm ups are a killer. Use fuel with as little ethanol as possible. Don't use the AC in town, or as little as possible. Put max air pressure in the tires. Use summer tread tires only, stay away from aggressive tires. Avoid short trips.

On quality fuel I've been getting 22 highway, 18-19 combined, 15-16 city depending on temperature and trip length, but its been getting harder and harder to find quality fuel.

All great tips and info! I noticed i get great gas mileage when i use cruise control instead of my foot for as long as i can ( mixed driving ).

If I am lucky/unlucky enough to have to do a collatoral swap or something with my JGC Overated Summit then I am going to try to go with a V8 and less model like a overland, limited hell I would even love to have a 4 x 4 laredo with only power liftgate and sunroof.rear entertainment.
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  #23  
Old 06-18-2012, 01:54 PM
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Re: 5.7 guys opinions needed

Just to pipe in. I have the V6 and I can't complain. This past weekend I drove 200+ miles to the beach with 4 adults, Luggage, fully packed cooler, fishing gear and some other odds and ends. I averaged 24 mpgs both ways. Normally throughout the week I drive 45 miles round trip to and from work and average between 20 and 22 mpg. I do driving traffic and a few stop lights in between. The only advantage I see in having the V8 is the towing. I don't think that the electronic ninnies allow for the full v8 power it is capable of.

Jeeps engineers are tasked to produce the most horsepower with the best fuel economy. Its the Jeep lawyers that make the programmers dial down the horsepower to prevent lawsuits from out of control soccer moms.
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  #24  
Old 06-19-2012, 01:08 PM
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Re: 5.7 guys opinions needed

I haven't driven the V6, but coming from a Porsche Cayenne S with the 4.5 V8, I'm pretty disappointed with the 5.7 Hemi in my new JGC. It probably has more to do with mapping and transmission gearing/shift points, but it feels so slow compared to the Cayenne... and the Hemi makes more HP and Torque!
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