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TDI Fuel Economy Discussions about increasing the fuel economy of your TDI engine. Non TDI related postings will be moved or removed.

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Old July 2nd, 2018, 22:56   #11041
Join Date: Jun 2018
Location: WNC

Anyone live in a state where diesel is typically cheaper or the same price as regular unleaded? Here (NC) diesel is typically 30 - 50 more expensive. I have filled up in Tennessee a couple of times and diesel was 10 less than regular unleaded.

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Old July 9th, 2018, 05:03   #11042
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Location: Pennsylvania

Don’t you know??? Diesel is harder to refine compared to gasoline........
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Old July 9th, 2018, 05:56   #11043
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Location: Oroville, State of Jefferson / Prescott, AZ

Originally Posted by TDI-WNC View Post
Anyone live in a state where diesel is typically cheaper or the same price as regular unleaded? Here (NC) diesel is typically 30 - 50 more expensive. I have filled up in Tennessee a couple of times and diesel was 10 less than regular unleaded.

Years ago diesel used to be usually less than regular gasoline. However with the no sulfer mandate it is now more expensive to refine.

But consider this: a car using diesel can go 50 miles on a gallon so at $3.50/gallon it costs 7 cents per mile. Meanwhile the same model car with a gasoline engine only goes 30 miles on a gallon so its $3.00/gallon price means it costs 10 cents per mile or about 43% more to cover the same distance!

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Old July 9th, 2018, 07:02   #11044
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Join Date: Aug 2004
Location: South of Boston
Fuel Economy: 50/45/37

When I started driving diesels the price difference between diesel and gasoline (regular, not unleaded...yes, it was that long ago), was usually a few pennies. But that was also at a time when fuel prices in general were very volatile. Since then it fluctuates, but is usually about the same price or a little less than unleaded premium, at least here in the northeast.

Honestly I don't care. The fuel efficiency of diesels more than makes up for any historical price disadvantage, as romad has pointed out. And I don't want to drive gasoline cars regardless.
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Old July 9th, 2018, 09:44   #11045
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Join Date: Jul 2000
Location: LA (Lower Alabama)
Fuel Economy: ~39 mpg :(

Diesel is usually around mid-grade here, at least during parts of the year.

Right now it's a bit more, kind of between mid and premium. Seems like over the last 10 years or so, the spread between grades of gasoline has really widened. I remember when every single station was a uniform 10 difference between grades. So if the Raceway sold regular unleaded for $1.299, mid would be $1.399 and premium would be $1.499. Nowadays, 15 is the low end and some stations like Shell are 30 or even 49 cents per gallon different. Since they don't post the mid and premium prices on signs anymore, I feel sorry for the folks whose car run on those grades, because they are getting hammered.

The Shell nearest me today at 4 am:

RUG - $2.649
MID - $3.139
PRM - $3.629
Diesel - $2.899 / $2.959 (credit)

Go down the road a mile, and the Circle K is selling premium for $3.129 and diesel is $2.929. As you can see, this makes making a blanket statement comparing higher grade gas and diesel prices here kind of difficult.

Prior to Memorial Day diesel was anywhere from $2.799 to $2.999. Now it's $2.929 to $2.999. The high end is holding tight to the three buck ceiling, but the low end has shrunk.
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Old July 12th, 2018, 19:51   #11046
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Join Date: Dec 2015
Location: Dunsmuir,Ca.
TDI(s): ALH Samurai
Fuel Economy: pending

3.99 -down 17 cents
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Old July 14th, 2018, 09:27   #11047
Join Date: Jan 2006
Location: Whistler, B.C.
Fuel Economy: 43 city, 54 hwy (imp.)

Here in the Vancouver, B.C. area, diesel is about 10 cents a liter cheaper, which works out to about 36 cents per US gallon cheaper. A few weeks ago, it was a much as 20 cents a liter cheaper.
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Old July 15th, 2018, 18:37   #11048
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Join Date: Jul 2009
Location: Connecticut
Fuel Economy: 52mpg (highway)

In summer diesel is usually between Regular and Mid Grade...in winter it's typically close to Premium.That's in Massachusetts where I buy most of my fuel.
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Old July 17th, 2018, 07:51   #11049
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Join Date: Apr 2003
Location: Charlotte, NC
Fuel Economy: 55 max / 44 avg on beetle ~37 on JSW

In NC and SC, diesel is typically in the 15-25 cents per gallon higher than regular and less than midgrade. I consider that the same vehicle with a gas engine will get about 30% lower mileage. With regular around $2, that means diesel would have to be higher than $2.60 to be more expensive to run.
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Old Yesterday, 10:40   #11050
Join Date: Jul 2018
Location: Northern Indiana
Fuel Economy: Best: 46.6 mpg, Avg: 41 mpg

In Indiana, it's about the same price as mid grade gasoline. I did find out that the state tax on fuel is about 16 cents more per gallon on diesel than on gasoline. If the taxes were to be equal, diesel and regular unleaded gasoline would be about the same price everywhere.

Current averages

Regular Unleaded - $2.99/gallon
Diesel - $3.19/gallon
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