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  #25  
Old 09-02-2012, 10:25 PM
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Re: MPG V8 - 2nd update

My friend has a 2011 Overland with the V6. I have the 2012 Overland with the V8. We both drove to Lake Pocono in our Jeeps this morning. I had my wife and son aboard. He has his wife, and two kids. His car had maybe an additional 50 lbs in it. 141 miles each way and we used cruise at about 70-75 for most of it, all highway.

I got 22 mpg and he got 25. Looking at our gauges it appeared he had roughly 1/16 more fuel after 300 miles, though hard to tell exactly. It was not a big difference. After driving my V8 he's done with the V6. He's got a lease and will trade up. I think the V6 does better than the V8 on local/city driving, but I don't think the V6 makes much sense if you do a light of highway. The V8 is just silky and effortless. The 360 hp is exactly what the GC needs.


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  #26  
Old 09-03-2012, 07:25 PM
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Re: MPG V8 - 2nd update

You guys make it sound like the V6 engine is a slouch... At ~290hp it puts out the same kind of power many other SUV V8's manage to produce. If you average even a 3mpg difference over the term of ownership it will start it add up, the difference would probably be greater when you factor in city+highway efficiency and the extra cost to get into the V8. I came from a Lexus GX470 whose V8 produced ~260hp and averaged 17mpg on the highway. I'll take every dollar I can save, this isn't a race car, the V6 has plenty of pickup. I can understand the enjoyment of 360hp but there is no math to which justifies the V8 being cheaper to own.
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Old 09-03-2012, 07:57 PM
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Re: MPG V8 - 2nd update

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Originally Posted by z0lt3c View Post
You guys make it sound like the V6 engine is a slouch... At ~290hp it puts out the same kind of power many other SUV V8's manage to produce. If you average even a 3mpg difference over the term of ownership it will start it add up, the difference would probably be greater when you factor in city+highway efficiency and the extra cost to get into the V8. I came from a Lexus GX470 whose V8 produced ~260hp and averaged 17mpg on the highway. I'll take every dollar I can save, this isn't a race car, the V6 has plenty of pickup. I can understand the enjoyment of 360hp but there is no math to which justifies the V8 being cheaper to own.


I have a different view:

The GC is a seriously luxurious ride with equally serious off road/deep snow capability, especially in Overland trim. After loading it up with every option I wasn't about to suddenly pull back on the less rewarding engine just to save a few bucks. Let's be real here. Niether engine is great on gas, so might as well go whole hog and go all the way. The difference in MPG is just not that big a deal when you're buying a SUV in the 45-50K price range. I have a little Subaru for better MPG and believe me I use it often.
But this Overland is a FAT comfy road machine. I'd no sooner weigh it down with the V6 than I'd put a flat four in a Dodge Viper.

Today, in upstate NY with lots of hills MPG was worse, barely getting 20 MPG this time. But my wife says our gas budget is really not noticeably worse than when we had the Mitsubishi Outlander V6 which got 24-26 MPG. Wednesday I'm driving nearly 400 miles again and will start with a full tank. I've already got 2K miles on the car, so let's see how she does.

Cheers



Robert
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  #28  
Old 09-04-2012, 12:39 PM
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Re: MPG V8 - 2nd update

If you live in a hilly area, an engine that's powerful enough to avoid kicking down a gear for every hill is really nice.
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  #29  
Old 09-04-2012, 02:32 PM
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Re: MPG V8 - 2nd update

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Originally Posted by z0lt3c View Post
I can understand the enjoyment of 360hp but there is no math to which justifies the V8 being cheaper to own.
I don't think that anyone said the v8 is cheaper to own. But when people are getting within a few MPG of the v6 it becomes a cost/benefit analysis. I don't mind giving up 3 MPG to have 360 silky smooth horsepower and more importantly 390 silky smooth ft pounds of torque on tap. To your point there is no math which justifies a Grand Cherokee V6 being cheaper to own than a Prius, yet you did the cost/benefit analysis and opted for the V6 Grand Cherokee over the Prius.

Another reason I opted for the Hemi was durability. The Hemi and the 65RFE trans (which is really just a 45RFE) have been around for a while and are pretty much bullet proof.
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  #30  
Old 09-04-2012, 07:46 PM
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Re: MPG V8 - 2nd update

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Originally Posted by CaptRB View Post
I have a different view:

The GC is a seriously luxurious ride with equally serious off road/deep snow capability, especially in Overland trim. After loading it up with every option I wasn't about to suddenly pull back on the less rewarding engine just to save a few bucks. Let's be real here. Niether engine is great on gas, so might as well go whole hog and go all the way. The difference in MPG is just not that big a deal when you're buying a SUV in the 45-50K price range. I have a little Subaru for better MPG and believe me I use it often.
But this Overland is a FAT comfy road machine. I'd no sooner weigh it down with the V6 than I'd put a flat four in a Dodge Viper.

Today, in upstate NY with lots of hills MPG was worse, barely getting 20 MPG this time. But my wife says our gas budget is really not noticeably worse than when we had the Mitsubishi Outlander V6 which got 24-26 MPG. Wednesday I'm driving nearly 400 miles again and will start with a full tank. I've already got 2K miles on the car, so let's see how she does.

Cheers



Robert
I don't think anyone here is saying that the V8 is not a great engine. And...all things being equal....I'm sure everyone would take the V8. I know I would. But.....things aren't equal.

Adding up some rough numbers.....approximately $2195 for the V8 option. Assuming 15000 miles per year with 18mpg city driving with the V6 is 833 gallons of gas per year. At current prices of around $3.69/gallon, that's $3075/year for fuel. With the V8...15000 miles....15mpg city driving is 1000 gallons of gas/year. Around here, the mid grade gas is around .15 more per gallon, So, figuring 1000 gallons at $3.84/gallon comes to $3840. A difference of $765/year or $3825 over a 5 year ownership period.

So, $2195 for the V8 option, $3825 additional for gas over a five year ownership period and marginally higher insurance costs with the V8 could place the cost of the V8 at around $7000 over that five year period.

That's a pretty significant cost. It just comes down to whether you're willing to drop an additional 7K to have the extra power.
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  #31  
Old 09-08-2012, 08:38 AM
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I don't give a crap about the money. I like how smooth and powerful my Hemi is. I drive mostly short trips in the city so of course I average less than 10mpg. But I get 18-22 on the highway depending on how fast I go. I didn't buy this thing for fuel economy.

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  #32  
Old 09-08-2012, 07:11 PM
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Re: MPG V8 - 2nd update

One more trip MPG update. From NY to PA, lots of hills and long climbs. 19.8 MPG after 3.5 hours. I did about 75 MPH average and this was my worst highway result so far.

But on the way back with the same conditions and a full tank I got 24 MPG!!! I have no idea why, accept maybe there were more downhills. It was a big enough difference that it was easy to see on the fuel gauge.

At one point two 18 wheelers played tag and did not appear to see me. The hemi pulled me clear and quick! I know for a fact that the 6 would not have managed it as I barely squeaked through. Proper power is not just a luxury; it's also a safety feature. Truck drivers on 84 should be arrested and tested.


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  #33  
Old 09-08-2012, 08:05 PM
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Re: MPG V8 - 2nd update

You may have got a tank with less ethanol. I run across 84 and 80 often, and it is generally up hill one way, down hill the other, so a difference in 2 mpg or so is kinda expected.

You can also save a lot of fuel drafting an 18 wheeler, if you want to go there.
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Old 09-08-2012, 08:13 PM
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Re: MPG V8 - 2nd update

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Originally Posted by redsoxx1918 View Post

So, $2195 for the V8 option, $3825 additional for gas over a five year ownership period and marginally higher insurance costs with the V8 could place the cost of the V8 at around $7000 over that five year period.

That's a pretty significant cost. It just comes down to whether you're willing to drop an additional 7K to have the extra power.
The WK2 is a significant cost to begin with. My V8 insurance is less than the V6. The V8 costs marginally more to maintain, unless you factor in the PITA V6 head replacement. I dunno, my calculator says thats about $6000 on a 50K vehicle.... over 5 years ($100 a month? ~$3 a day)... I think I'm worth $3 a day, I'll just skip the afternoon frappachino... ...
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  #35  
Old 09-08-2012, 09:26 PM
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Re: MPG V8 - 2nd update

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Originally Posted by redsoxx1918 View Post
I don't think anyone here is saying that the V8 is not a great engine. And...all things being equal....I'm sure everyone would take the V8. I know I would. But.....things aren't equal.

Adding up some rough numbers.....approximately $2195 for the V8 option. Assuming 15000 miles per year with 18mpg city driving with the V6 is 833 gallons of gas per year. At current prices of around $3.69/gallon, that's $3075/year for fuel. With the V8...15000 miles....15mpg city driving is 1000 gallons of gas/year. Around here, the mid grade gas is around .15 more per gallon, So, figuring 1000 gallons at $3.84/gallon comes to $3840. A difference of $765/year or $3825 over a 5 year ownership period.

So, $2195 for the V8 option, $3825 additional for gas over a five year ownership period and marginally higher insurance costs with the V8 could place the cost of the V8 at around $7000 over that five year period.

That's a pretty significant cost. It just comes down to whether you're willing to drop an additional 7K to have the extra power.


The problem with this is that my friend with the V6 overland is just not beating my MPG numbers by a big enough margin for it to be meaningful to the wallet, especially on the highway. Again, this is a heavy truck and the extra HP and torque of the V8 makes for a very balanced vehicle that can get out of it's own way.
I paid about 42K for my 2012 V8 Overland with adaptive cruise. Getting the V6 was not 2K cheaper and there was a 750 rebate for anyone getting v8 last month. So with the V8 and V6 close in price and the MPG advantage for the V6 not a lot to write home about it was an easy choice.
Another side note: Outside of the comparison made with my friend's V6 Overland my friend typically gets MPG very close to mine, and barely any better on the highway unless he really keeps it light. He says he often pushes the V6 harder than I push the V8 and that costs.


Robert
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  #36  
Old 09-08-2012, 11:23 PM
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Re: MPG V8 - 2nd update

To all those in this thread commenting that money is not a factor, why are you all not in SRT8's ?? And enough of this silly 'silky smooth' description, your not even shifting it yourself, and the trans shifting patterns are questioned by many here.

To the OP, it sounds like the type of driving you do must allow for maximum efficiency of the V8. I paid 28.5K for my Laredo and just don't see the need for more then the 290HP I have. I regularly commute NJ to the finger lakes area of NY, average 23.5 mpg in either direction, and I use the Jeep to pull my 3000lb bow rider around as well.
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