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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW Passat Family (NMS and B7) TDIs (2012+)

VW Passat Family (NMS and B7) TDIs (2012+) Discussion area for the 2012+ Passat TDI (North American and rest of world versions versions). The North American model was previously codenamed NMS (New Midsize Sedan) and the version the rest of the world gets is sometimes referred to as B7.

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Old June 17th, 2017, 02:02   #1
New Mickey
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Default Mickey Filling? Where is my beloved button?

My NB had The Button, and I could fill the tank all the way to the top of the neck. Got an extra 100+ miles out of a tank that way.

Any tricks to achieve bladder-busting, UTI-inducing amounts of fuel in the tank with the 2015 Passat? Or I'm I just going to have to stop and pee, for crying out loud?

-mickey
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Old June 17th, 2017, 04:30   #2
IndigoBlueWagon
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You have to stop. TDIs haven't had expansion tanks you could fill since '06.
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Old June 17th, 2017, 08:12   #3
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Quote:
Originally Posted by New Mickey View Post
My NB had The Button, and I could fill the tank all the way to the top of the neck. Got an extra 100+ miles out of a tank that way.
Any tricks to achieve bladder-busting, UTI-inducing amounts of fuel in the tank with the 2015 Passat? Or I'm I just going to have to stop and pee, for crying out loud?
-mickey
Just let the pump do the fill and after it shuts off. then manually fill the rest right to the top of the filler neck.
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Old June 19th, 2017, 05:36   #4
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Passat takes a long time to trickle in to see fuel, the angle to the filler neck is a lot more shallower than my old Jetta.

I've filled up until I saw fuel, then kept dribbling it in, for another 3-5 minutes, it takes another half gallon or so from the first time you see fuel.
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Old June 19th, 2017, 09:23   #5
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The modern tanks have an auto-vent that activates when you remove the nozzle. You can pump in an extra half gallon or so if you remove the nozzle and pump slowly. Gone are the days of the vent button that got activated when you screwed on the fuel cap.

I've also found that it's easier to top off if you leave the engine running while filling. Of course, that's on a 2012... I have no idea if the 2015 is the same or not.
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Old June 19th, 2017, 09:52   #6
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IIRC, counter-intuitively, car nose UP and not down, at least on the 12-14. Can't imagine they changed the weird fuel fill neck on the 2015s.
Not worth the time, IMHO, nor the risk of UTI
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Old June 20th, 2017, 09:17   #7
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When the pump shuts off I can get up to 1 more gallon in *but* it is not always possible to do this - depends on the pump used / increases risk of overfilling. The most reliable method is to add half a gallon after shut off as I've found doing so works consistently with all pumps I've encountered thus far.
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Old June 20th, 2017, 11:00   #8
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I really don't see the point of brimming the tank/filler neck other than to try to get the most accurate hand calculated fuel consumption figures. My bladder is bursting long before the 500+ miles I get on a tank of fuel.
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Old June 20th, 2017, 12:42   #9
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Unless you live right next door to the filling station, by the time you get home some of it will have gone down anyway.

I fill right to the top every time for accuracy in my calculations. Some pumps are a lot easier to do that with than some others.
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Old June 20th, 2017, 21:26   #10
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Quote:
Originally Posted by turbobrick240 View Post
I really don't see the point of brimming the tank/filler neck other than to try to get the most accurate hand calculated fuel consumption figures. My bladder is bursting long before the 500+ miles I get on a tank of fuel.
That's the only reason I do it.
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Old June 22nd, 2017, 09:28   #11
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I've been driving the '12 Passat

Filled up last Thrusday, filled up today, 755 miles 16.2 gallons.

Pump auto shut off at 15.1 gallons.

Sadly the MDF said I only had 20 miles to go. I know this was a long standing issue with the car.

I haven't pushed the '15 that far to see if its still an issue
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Old June 22nd, 2017, 10:24   #12
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Originally Posted by VeeDubTDI View Post
That's the only reason I do it.
And how does that make your world and your life better? It's just OCD and they do have medication for that. There are many more things in life than that to be to be concerned about than the most accurate calculation of fuel economy. Basically when you determine what it is it really doesn't matter anymore because standing at the pump and dribbling in every last drop of fuel is just a waste of time.
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Old June 22nd, 2017, 10:55   #13
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When the jetta door locks stopped working on all but 1 rear door. I repeatedly unlocked the doors 2-4 times while walking to the car to make sure I wouldn't set off the car alarm when opening and unlocked door with the alarm set.

I knew I only needed to unlock the door once, but I was burned 3-5 times setting off the alarm.

OCD is fun stuff.
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Old June 22nd, 2017, 12:21   #14
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Quote:
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And how does that make your world and your life better? It's just OCD and they do have medication for that. There are many more things in life than that to be to be concerned about than the most accurate calculation of fuel economy. Basically when you determine what it is it really doesn't matter anymore because standing at the pump and dribbling in every last drop of fuel is just a waste of time.
I appreciate your concern for my idiosyncrasies. I can assure you that the entire process adds no more than 60 seconds to the total time it takes to fill the car... less time than it probably took you to make that post.
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Old June 23rd, 2017, 06:39   #15
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Default Filling up

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Originally Posted by tdiatlast View Post
IIRC, counter-intuitively, car nose UP and not down, at least on the 12-14. Can't imagine they changed the weird fuel fill neck on the 2015s.
Not worth the time, IMHO, nor the risk of UTI
I have found the same thing. Nose up helps. When I first got the car I'd fill it up to the first click off and stop but it bugged me that the gas gauge was down an 1/8 from full right from the start. Then I tried a REALLY slow gentle fill and I was able fill it till full on the gauge with it full right up to the top of the neck. That was good as it extended the range to say 1300km but it took a really really long time to fill. Now I fast fill it to the first click off and pause to let the foam die down then fill with really short clicks till the neck is brimming. At 0 range on the MFI readout the most I have ever put in the 70 litre tank is 67 and more usually it is 62 to 65 litres. As far as I can tell 0 range is just as the manual states there is probably a 6- 7 litre reserve which translates to an additional 150 km of range. I don't sweat the 0 range because I know I this. Of course driving into that range raises the spectre of eventually drawing air into the system so probably good to not go to far past 0 range. That way there is enough fuel in the bottom of the tank to keep the pickup covered.
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