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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 February 5th, 2004, 16:57   #31
Rammstein
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Join Date: Sep 2002
Location: Québec city baby, Canada
TDI(s): Golf 92 D
Fuel Economy: 4.31/5.05/6.16
Default 1400 miles (2254 km.) on 1 tank!!

[ QUOTE ]
[ QUOTE ]
Impossible? <P>1407 miles (2265 km.)<BR>24.19 gal. (91.57 l.)<BR>58.2 MPG<P>I took a 1000 mile business trip and thought I would try to better my previous records for mileage and cruise distance (49.5 MPG, 1206 miles). I upped tire pressure to 44 PSI, chose a route that I thought would be the flattest (turns out it wasn't the best choice), and slowed down a bit. The results, according to my MFA, were so encouraging that it made a perfect excuse to take another 300 mile trip (thinking that would be as far as the car could go...wrong!).<P>Since I had a useable 1/2 gallon left at the end, I think that once I install my Upsolute chip and larger diameter tires, and choose a flatter route, I should be able to go 1500 miles (though I'm in no hurry to do this any time soon).<P>The Passat wagons can't compete with the 5-speed A4s (nor some of the Passat sedans on the Forum) in terms of real world MPG, but their big tanks have certain advantages. I think I have really earned my "Fahrfrumpumpen" sticker!<p>[ July 29, 2001: Message edited by: Chris Bell ]

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Bah... with my Fiat Stilo 1.9 JTD 115HP and not only by regular highway, I do: 1200km (50 lt of Diesel Fuel)!!!

And now, with new MJTD 1.9 140cv I think is more difficult for TDI!!

TDI is more noise than JTD, and just a little expensive.

Hi all

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No other car will go 2000 + km than the B4's, not one! [img]/images/graemlins/wink.gif[/img]

I've got a tank of 2154.7 and 2120 km to my first year driving the TDI (it was last summer; there are 2 threads about each).

I'll beat Mr Bell next summer, don't worry about it! [img]/images/graemlins/grin.gif[/img]
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Old May 26th, 2004, 07:49   #32
LuisUy2004
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Join Date: Apr 2004
Location: Paysandu, URUGUAY, South America
Fuel Economy: 45/40/35
Default 1400 miles (2254 km.) on 1 tank!!

Really amazing! I wonder how fast do you drive to get those figures, 60 mph (100 kph)? Or even less? [img]/images/graemlins/confused.gif[/img]
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Old May 26th, 2004, 08:32   #33
Rammstein
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Join Date: Sep 2002
Location: Québec city baby, Canada
TDI(s): Golf 92 D
Fuel Economy: 4.31/5.05/6.16
Default 1400 miles (2254 km.) on 1 tank!!

90 kph [img]/images/graemlins/grin.gif[/img]
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Old May 26th, 2004, 09:46   #34
Chris Bell
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Location: Santa Barbara, CA
Default 1400 miles (2254 km.) on 1 tank!!

Wow! 26,978 views...that's got to be a Forum record.
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Old May 26th, 2004, 10:41   #35
Rammstein
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Join Date: Sep 2002
Location: Québec city baby, Canada
TDI(s): Golf 92 D
Fuel Economy: 4.31/5.05/6.16
Default 1400 miles (2254 km.) on 1 tank!!

Yeap, moreover that there's a link on the front page... [img]/images/graemlins/wink.gif[/img]
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Old May 26th, 2004, 10:42   #36
Rammstein
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Join Date: Sep 2002
Location: Québec city baby, Canada
TDI(s): Golf 92 D
Fuel Economy: 4.31/5.05/6.16
Default 1400 miles (2254 km.) on 1 tank!!

Here you go, 27000, and the last 3 are from me! [img]/images/graemlins/wink.gif[/img]
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Old July 14th, 2004, 09:27   #37
2RENU
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Join Date: Apr 2003
Location: Los Angeles, CA
Fuel Economy: 48/39
Default 1400 miles (2254 km.) on 1 tank!!

Hi i am wondering one thing,

how are you sure that your hybrid GLX / TDI instrument cluster is fully accurate and calibrated correctly ?
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Old July 14th, 2004, 09:53   #38
Chris Bell
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Location: Santa Barbara, CA
Default 1400 miles (2254 km.) on 1 tank!!

The odometer (and distance values in the MFA) were checked on a speedometer dyno and were right on. That was the easy part.

The hard part is calibrating the ECM's fuel consumption signal for the MFA. Well, not difficult just very, very time-comsuming. And it has to re-done if you change fuel types (i.e, petro to B20, or B20 to B100). This fact really encourages you to stick with one fuel type.
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Old July 18th, 2004, 15:44   #39
Lug_Nut
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Join Date: Jun 1998
Location: Sterling, Massachusetts. USA
Default 1400 miles (2254 km.) on 1 tank!!

Just a quick update on my first full tank on my B4 wagon:
I'm now at over 900 miles with an indicated 10 gallons remaining, and on B100 no less!
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Old July 19th, 2004, 01:05   #40
Rammstein
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Location: Québec city baby, Canada
TDI(s): Golf 92 D
Fuel Economy: 4.31/5.05/6.16
Default 1400 miles (2254 km.) on 1 tank!!

My prediction is that you will run out of fuel before you hit the bottom of your gauge...
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Old July 19th, 2004, 06:10   #41
Lug_Nut
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Default 1400 miles (2254 km.) on 1 tank!!

I suspect that I'll chicken out before then.
The gauge has begun the more rapid descent that began at about 10 "gallons" indicated on my two prior sedans. I had been attaining 100 miles per two "gallons" on the gauge. Now it's about 80.
Fourteen hundred miles is still a possibility, but I don't think I want to try THAT hard, not yet anyway.
Chris was right, I'll get over 1300, but I now seriously think that 1400 is not going to happen this first fill-up.
I may make a serious attempt sometime after getting a needed front end alignment and changing out the low profile tires I presently have for something that rolls more easily.
Or maybe next time I'll just pump these up to 40 or 44 lbs.
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Old July 20th, 2004, 04:13   #42
Lug_Nut
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Join Date: Jun 1998
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Default 1400 miles (2254 km.) on 1 tank!!

UNCLE! I concede!
I'm just over 1200 miles with just four gallons indicated remaining. I *could* try for the 1400 mile benchmark, but have decided against it (chickened out) at this time. I'll be at about 1275 miles by the time I get home tonight, just a shade over 2000 km, and I'll add some fuel.
It's now obvious to me that the key is conservative driving from the beginning of the tank and not depending on the volume alone to be sufficient means of attaining the distance. My next attempt, and I expect that I will try again, will be more serious than this first foray into mileage marathon madness. I'll put on the narrower, lower resistance tires and keep their pressure up closer to the maximum. I'll avoid running the A/C. I'll behave in the speed department.
Until then Chris and David deserve the accolades and my envy.
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Old July 20th, 2004, 08:54   #43
Chris Bell
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Default 1400 miles (2254 km.) on 1 tank!!

JB, why don't you use this opportunity to check the tank capacity and the gauge calibration (i.e., where "empty" really is)? You're probably carrying around a quart of B100, new fuel filter, and funnel already in case your filter plugs up with petro residue, right? Why not either run it till it begins to sputter or do short runs close to your fillup location, shutting the engine off between runs? When startup time becomes lengthy, you know you're at the dregs. For my wagon, when I shut the engine off, then restart it fairly soon thereafter and the startup time is noticeably longer, I'll run "dry" within 10-20 miles.

Letting it run dry is not ideal, I know, but if you shut it down at the first indication of sputter and manually fill the filter before restarting, I don't think it does any harm, especially w/ B100.
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Old July 20th, 2004, 10:51   #44
Rammstein
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Join Date: Sep 2002
Location: Québec city baby, Canada
TDI(s): Golf 92 D
Fuel Economy: 4.31/5.05/6.16
Default 1400 miles (2254 km.) on 1 tank!!

Jonathan, my B4V doesn't wanna start when there's less than 1 litre left in the tank.
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Old July 20th, 2004, 11:53   #45
VelvetFoot
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Default 1400 miles (2254 km.) on 1 tank!!

My Beetle does that too, although it no longer has a check valve in the line from the pickup.
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