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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 1st, 2017, 10:53   #1861
mikew85120
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Join Date: Jun 2014
Location: Arizona
Fuel Economy: 34-37 City 44 highway
Default Not in the South West.

There are spots in the southwest where fuel stations are over 100 miles apart and temperatures are in the 110į range. IMO it would not be safe to push for the 700 mile goal. I just got back from a trip from southeast of Phoenix AZ to Reno NV and back. I last fillup was for 539.3 miles and only added 11.977 gallons of fuel= 45.028 mpg. Figuring an 18 gallon tank gives me at whooping 810.5 miles. Average speed was 68 by cruise control, majority was 4 lane highway with some 2 lane rural roads.
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Old September 25th, 2017, 17:43   #1862
Blue_Hen_TDI
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I was in with my B4V, Mk4 and NMS. Finally made it in with my Mk7 GSW DSG and its baby tank this evening:

700.6 miles
11.436 gallons
61.26 mpg





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Old September 26th, 2017, 09:36   #1863
2OO2TDI
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Fuel Economy: 45.36723163841808
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703.7 on 17.521 Gal. Fill up. Not impressed but then again I was pushing 75-80 and I weigh 375#ís AC 80% 75/25 Hwy/City. Getting 40 MPGs Iím not happy about it, but then again I just canít drive 55 and also with the heavy load in my car thatís another factor. I will try and stay in the slow lane on this tank and see what happens.
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Old October 5th, 2017, 10:20   #1864
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Update, 803 Miles and ran out of fuel pulling into the fuel station, pumped 17.7 and hand calc 45.36723163841808 just slowed down a bit other than that same conditions. Wouldn’t start so I called the dealer and dude told me, just crank her for about 20 seconds a few times and she should fire up, And she did about 10-12 seconds later ����
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Old October 6th, 2017, 06:35   #1865
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Cool to make it to the 800 mile club!! But try not to make it a habit. Fuel pumps are cooled and lubricated by the fuel in them, so running them dry or very low regularly will cause them to fail.

Jason
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Old October 6th, 2017, 08:42   #1866
IndigoBlueWagon
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Location: South of Boston
Fuel Economy: 50/45/37
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Quote:
Originally Posted by SilverGhost View Post
Cool to make it to the 800 mile club!! But try not to make it a habit. Fuel pumps are cooled and lubricated by the fuel in them, so running them dry or very low regularly will cause them to fail.
I think people worry way too much about this. Running low on fuel is fine, in my experience. Running out isn't so great.
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Old October 6th, 2017, 17:18   #1867
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Throw a hand vacuum pump in the trunk along with a jug of fuel. No worries then.
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Old October 6th, 2017, 21:48   #1868
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Quote:
Originally Posted by IndigoBlueWagon View Post
I think people worry way too much about this. Running low on fuel is fine, in my experience. Running out isn't so great.
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Old October 7th, 2017, 10:56   #1869
adjat84th
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Fuel Economy: ~50 in mixed driving
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Drive more, worry less!

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Old October 9th, 2017, 06:32   #1870
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Uh, guys? Per his info he has a 2004, which has an electric lift pump in the tank. Running them dry REPEATEDLY is not good for the pump. ALH on the other hand probably won't hurt a thing, just a royal pain to bleed it and get started again.

Jason
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Old October 9th, 2017, 08:57   #1871
adjat84th
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I've had a lift pump for 150k miles installed on my '01, and though I don't constantly run around on empty, I certainly squeeze the tank till the light comes on.

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Old March 14th, 2019, 09:35   #1872
TdiRN
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My first 700+ mile tank! 710.6 miles on roughly 15.6 gallons with 339k on the car!
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Old March 15th, 2019, 08:16   #1873
kirktdi
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In almost 19 years of ownership my highest is 642 on 12.62 gals in Aug 2002. I have never vented.
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Old March 17th, 2019, 08:27   #1874
coolvdub
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Fuel Economy: 54.7 Best so far
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803.4 miles and 16.009 gallon fill up on vented tank 355k on car
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