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Old 01-09-2012, 10:57 AM
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Lightbulb "Yeah, but diesel costs more..."

I put together a little visual for all the people who dismiss the idea of a diesel engine because diesel costs more per gallon.

The fuel economy numbers are based on the combined fuel economy published on fueleconomy.gov and/or wk2jeeps.com

The fuel costs are based on yesterday's AAA published national averages using the manufacturer suggested fuel types.

Here you will see for 1000 miles, it appears you will see that you will pay an additional $8 - $12/full tank on the diesel BUT you will save $20 - $80 overall.

3.6L 5.7L 3.0L
Miles Driven 1000 1000 1000
Combined MPG 19 15 25
Tank Capacity 24.6 24.6 24.6
Fuel Cost / Gallon $3.37 $3.51 $3.85
Fuel Stops / Miles Driven 3 3 2
Cost / Full Tank $82.93 $86.25 $94.81
Cost / Miles Driven $177.42 $233.73 $154.16


Now let's bump this up to 25,000 miles and you will see diesel saves you between $600 and $2000!

3.6L 5.7L 3.0L
Miles Driven 25000 25000 25000
Combined MPG 19 15 25
Tank Capacity 24.6 24.6 24.6
Fuel Cost / Gallon $3.37 $3.51 $3.85
Fuel Stops / Miles Driven 54 68 41
Cost / Full Tank $82.93 $86.25 $94.81
Cost / Miles Driven $4,435.53 $5,843.33 $3,854.00


For all engines, these figures are based on the current generation 5/6 speed transmissions. Your mileage may vary.
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Old 01-09-2012, 11:02 AM
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Re: "Yeah, but diesel costs more..."

And, the forum removed my table formatting. :-(
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Old 01-09-2012, 11:26 AM
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Re: "Yeah, but diesel costs more..."

Great work! I would have grabbed a diesel but it was out of my price range. Hopefully next vehicle I get can be diesel!
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Old 01-09-2012, 11:44 AM
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Re: "Yeah, but diesel costs more..."

I believe the diesel engine requires more maintenance so it's not necessarily apples to apples.
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Old 01-09-2012, 11:57 AM
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Re: "Yeah, but diesel costs more..."

^^^ like what? I'm just curious because I really don't know. Sounds odd to me considering there are no spark plugs compared to say the Hemi's 16.

Also, to the OP I was showing that combined fuel economy to be 28.6 for the new diesel so that proves your point even more so!!
Works out good for me since my current car is a premium only burner so the extra cost for diesel will be relatively minor compared to say someone who is used to buying regular. I'm excited for this new diesel on the WK2 in the US.
Thanks for all the info
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Old 01-09-2012, 12:20 PM
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Re: "Yeah, but diesel costs more..."

What about the added cost of the DEF?
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Old 01-09-2012, 01:42 PM
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Re: "Yeah, but diesel costs more..."

It will save eventually over the LONG haul, but like most people they only think short term (your data). Just like hybrids your not going to save ANY money over a regular compact car due to the added cost of the hybrid technology.

Your numbers do not factor in the extra cost of the hemi or the diesel on the window sticker. Given the projected cost of the diesel engine $3,000-$4,000 even at 100,000 miles (savings $2,300 over V6) miles you will never recoup the added cost at purchase. You'll have to drive over 130,000 miles for it to then save you money. Depending on how long it takes you to get to that point more times than none you could have made interest on an investment or even in your savings account which the diesel would never be able to recoup.

So unless you want the diesel for the extreme engine life or added towing it doesn't make any sense to purchase one. Now oversea's diesel is only a few cents more if not cheaper than unleaded so it is a no brainer there, but in the states not so much.
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Old 01-09-2012, 01:50 PM
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Re: "Yeah, but diesel costs more..."

Should one also consider diesel fuel availability? It seems that in NYC area most gas station don't have it. I haven't really paid much attention but sometimes I see signs like "We have diesel fuel" and they don't appear often.
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Old 01-09-2012, 02:01 PM
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Re: "Yeah, but diesel costs more..."

Those prices are way off compared to where I live. 87 octane is $3.19, 89 octane is cheapest at $3.09, and Diesel is $3.67. And I've seen diesle prices over $4 not to long ago.
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Old 01-09-2012, 02:20 PM
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Re: "Yeah, but diesel costs more..."

Don't forget about the huge range advantage with the diesel. Not having to stop for gas so often is a nice benefit.
For my comparison purposes, I would not be considering the 6cylinder so I would measure the diesel against the Hemi. Assuming pricing is similar to Europe/Australia, CRD costs the same as Hemi. More torque, significant gains in fuel economy/range are enough of a reason to go diesel for me.
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Old 01-09-2012, 02:52 PM
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Re: "Yeah, but diesel costs more..."

Quote:
Originally Posted by jgc4ever View Post
Those prices are way off compared to where I live. 87 octane is $3.19, 89 octane is cheapest at $3.09, and Diesel is $3.67. And I've seen diesle prices over $4 not to long ago.
Yes, the prices vary GREATLY across the US, even within the same state, which is why I used the national averages.
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Old 01-09-2012, 03:08 PM
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Re: "Yeah, but diesel costs more..."

Unless you are making your own diesel fuel, a diesel engine will cost more with the higher price for upkeep. I used to go to school with a guy that made his own fuel and it was only costing him under $1.50 per gallon.... and that was when gas was at $4.00 per gallon.
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