www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You

Order your TDIClub merchandise and help support TDIClub


Go Back   TDIClub Forums > VW TDI Discussion Areas > TDI Fuel Economy

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

Reply
 
Thread Tools
Old December 23rd, 2011, 18:06   #1
cristoaca
Member
 
Join Date: Mar 2010
Location: Atlanta, GA
Default '12 Passat vs '10+Golf/Jetta mpg

Could somebody please explain why is the new Passat TDI getting better fuel economy (according to the owners who posted in "Real World MPG thread" from Passat specific discussion area) than the TDI's Golf or Jetta?
Thank you.
cristoaca is offline   Reply With Quote
Old December 23rd, 2011, 18:38   #2
leicaman
Veteran Member
 
leicaman's Avatar
 
Join Date: Dec 2004
Location: Sheboygan, Wisconsin
Fuel Economy: Much better than the average car... :o)
Default

The reason is mainly due to the slightly different emissions system, namely that of Ad-Blue agent that you will need to add at regular intervals. Right now only the Passat has that. The other cars can go without it as the cars are lighter,even though the engine is essentially the same. The '12 has some extra tweaks that make them a little more efficient.
__________________
2015 Golf SE TDI with DSG, 88k.
and formerly a 2005 Passat GLS TDI - RIP, 208k miles. Many good memories and friends made with this car.
leicaman is offline   Reply With Quote
Old December 23rd, 2011, 19:22   #3
cristoaca
Member
 
Join Date: Mar 2010
Location: Atlanta, GA
Default

Thank you.
cristoaca is offline   Reply With Quote
Old December 28th, 2011, 08:51   #4
psd1
Veteran Member
 
Join Date: Aug 2011
Location: OR
Fuel Economy: See Fuelly link
Default

So, even though the numbers look better on paper, the cost of the AD Blue must be factored in to the overall operating cost of the vehicle.
__________________

psd1 is offline   Reply With Quote
Old December 28th, 2011, 12:55   #5
MikeMars
Veteran Member
Default

I think its cheaper than a new DPF
__________________

Audi A2 TDi 1.4*, 6M/0.588, mild aero mods, 103hp remap (* 3 pot version of 1.9PD)
Y2000 Passat TDi 115 PD RETIRED, M5, Best 75MPGuk, usually 60-70. 900m clubx7. 1000 mile clubx3.
VW Fuel saving tips
MikeMars is offline   Reply With Quote
Old January 3rd, 2012, 10:24   #6
Manyvws
Newbie
 
Join Date: Dec 2011
Location: Maine
Thumbs up 2012 Passat factory tuning

Quote:
Originally Posted by cristoaca View Post
Could somebody please explain why is the new Passat TDI getting better fuel economy (according to the owners who posted in "Real World MPG thread" from Passat specific discussion area) than the TDI's Golf or Jetta?
Thank you.
Hope this helps
The 2012 Passat's mapping is different than the Jetta's and is enabled do to the Urea injection which lowers NOx gases so,,,,,The passat has more power as it is sort off (chipped) from the factory. VW is being conservative about HP and Torque on this model. Urea tank full lasts about 10,000 miles. Costs around $12.00

I have a 2012 Passat TDI SE with the 6 spd std and just finish a ride from Boston to Portland Maine on sunday. About 107 miles, 90% interstate, 4 adults, 70 mph, straight pump diesel and got 46.4 MPG! This car will easily get 50s plus when broken-in.
Manyvws is offline   Reply With Quote
Old January 3rd, 2012, 12:35   #7
GoFaster
Moderator at Large
 
Join Date: Jun 1999
Location: Brampton, Ontario, Canada
Default

Quote:
Originally Posted by MikeMars View Post
I think its cheaper than a new DPF
For what must be the BAZILLIONTH time on these forms ...

The need for a DPF (controls soot) is independent of the need for AdBlue or other methods of NOx control!

ALL 2007 and later model year diesel engines in on-road vehicles use a DPF.

EVERY.

SINGLE.

ONE.

Inclluding every single one that uses AdBlue. Including every single one that does not. Including every single VW Passat TDI. Including every single Mercedes, BMW, VW, Ford, Dodge, GM, and all sorts of heavier-duty trucks.
__________________
Brian P.
formerly ... 2006 Jetta TDI 5-sp, Spice Red, Unitronics stage 1, 0.681 5th gear.
and before that ... 1996 Passat TDI, Silk Blue
GoFaster is offline   Reply With Quote
Old January 3rd, 2012, 12:36   #8
GoFaster
Moderator at Large
 
Join Date: Jun 1999
Location: Brampton, Ontario, Canada
Default

Quote:
Originally Posted by psd1 View Post
So, even though the numbers look better on paper, the cost of the AD Blue must be factored in to the overall operating cost of the vehicle.
It's true, but the apparent improvement in fuel consumption reduces fuel cost by a fair bit more than what it's going to cost to occasionally refill the AdBlue tank.
__________________
Brian P.
formerly ... 2006 Jetta TDI 5-sp, Spice Red, Unitronics stage 1, 0.681 5th gear.
and before that ... 1996 Passat TDI, Silk Blue
GoFaster is offline   Reply With Quote
Old January 3rd, 2012, 13:34   #9
psd1
Veteran Member
 
Join Date: Aug 2011
Location: OR
Fuel Economy: See Fuelly link
Default

Quote:
Originally Posted by GoFaster View Post
It's true, but the apparent improvement in fuel consumption reduces fuel cost by a fair bit more than what it's going to cost to occasionally refill the AdBlue tank.
True, but MPG is only one facet in factoring the cost to operate a vehicle. It's easy for folks to forget that the the urea system is there (another thing to go wrong) and that cost of the fluid itself.
__________________

psd1 is offline   Reply With Quote
Old January 4th, 2012, 04:40   #10
MikeMars
Veteran Member
Default

Quote:
Originally Posted by GoFaster View Post
...
The need for a DPF (controls soot) is independent of the need for AdBlue or other methods of NOx control!

ALL 2007 and later model year diesel engines in on-road vehicles use a DPF.
...
Interesting, thanks. (Although for TDIs I'm seeing the year 2009 mentioned elsewhere).
__________________

Audi A2 TDi 1.4*, 6M/0.588, mild aero mods, 103hp remap (* 3 pot version of 1.9PD)
Y2000 Passat TDi 115 PD RETIRED, M5, Best 75MPGuk, usually 60-70. 900m clubx7. 1000 mile clubx3.
VW Fuel saving tips
MikeMars is offline   Reply With Quote
Old January 4th, 2012, 04:54   #11
GotEuroCorrado
 
Join Date: Nov 2004
Location: just out of north east philadelphia
Default

My 2006 v10 and my mothers both have dpf...

Sent from my SGH-T989 using Tapatalk
__________________
ACS TDI SPECIFIC MAINTENANCE AND REPAIR IN HATBORO PA (267)317-8229
$650+/- ALH/BEW/BRM/BHW/CBEA/CJAA TIMING BELT KIT INSTALLED NEAR PHILADELPHIA !
used parts FS: http://tinyurl.com/zfdjgyh
smoking deals on TIMING BELT KITS: http://tinyurl.com/ov57jfl
GotEuroCorrado is offline   Reply With Quote
Old January 4th, 2012, 13:05   #12
VWBeamer
Veteran Member
 
Join Date: Jan 2009
Location: GA
Fuel Economy: 42.79 mpg Woot!
Default

Thanks, it bugs me also. ....but is the urea cheaper than a new HPFP?

Quote:
Originally Posted by GoFaster View Post
For what must be the BAZILLIONTH time on these forms ...

The need for a DPF (controls soot) is independent of the need for AdBlue or other methods of NOx control!

ALL 2007 and later model year diesel engines in on-road vehicles use a DPF.

EVERY.

SINGLE.

ONE.

Inclluding every single one that uses AdBlue. Including every single one that does not. Including every single VW Passat TDI. Including every single Mercedes, BMW, VW, Ford, Dodge, GM, and all sorts of heavier-duty trucks.
__________________
800 club. 828.5 miles, 16.33 gallons, 50.79 mpg.
2004 Jetta GLS Wagon TDi-17/22, 2.5 DP.2.5 Exhaust, Stage 5 Malone Tune.3 bar MAP, pd150 Injectors, Ebay FMIC, 1.8T Pancake pipe. Gutted PD100 intake.
VWBeamer is offline   Reply With Quote
Old January 4th, 2012, 13:13   #13
VeeDubTDI
Good Ol' Boy
TDIClub Enthusiast
 
VeeDubTDI's Avatar
 
Join Date: Jul 2000
Location: Springfield, VA
Fuel Economy: 130 MPGe
Thumbs down

Quote:
Originally Posted by VWBeamer View Post
Thanks, it bugs me also. ....but is the urea cheaper than a new HPFP?
Threads turn into HPFP crap quickly enough without this blatant trolling. While it's funny, some idiot will undoubtedly take the bait even if it wasn't intended as bait.
__________________
TDIClub Chat: irc.freenode.net ##tdiclub
EV Chat: irc.freenode.net ##ev
VeeDubTDI is offline   Reply With Quote
Old January 4th, 2012, 14:27   #14
VWBeamer
Veteran Member
 
Join Date: Jan 2009
Location: GA
Fuel Economy: 42.79 mpg Woot!
Default

Sorry, just joking....half way trolling just because the HPFP sky is falling folks are so much fun!!
__________________
800 club. 828.5 miles, 16.33 gallons, 50.79 mpg.
2004 Jetta GLS Wagon TDi-17/22, 2.5 DP.2.5 Exhaust, Stage 5 Malone Tune.3 bar MAP, pd150 Injectors, Ebay FMIC, 1.8T Pancake pipe. Gutted PD100 intake.
VWBeamer is offline   Reply With Quote
Old January 5th, 2012, 09:18   #15
NHTDI
Veteran Member
 
Join Date: Nov 2000
Location: Danville, NH
Fuel Economy: 38/42
Default

I think the Passat (6M) has different gear ratio's. IIRC a Passat owner stated 2000 rpm at 70mph. That's 300 rpm lower than my 09 Jetta 6M. Lower rpms could be another factor in the improved mpg.
Can't wait to see what these cars will get once broken in and when summer fuel arrives!
drooling...
__________________
14 BMW 328D Xd
11 Ford F350 PSD
09 Jetta Sport wagon
04 Passat GLS TDI
01 Jetta GLS TDI (tradein)
NHTDI is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
30/42 MPG Golf, 31/43 MPG Passat? Polak VW MKVI-A6 Golf family including Jetta SportWagen (~ 2010-2014) 10 June 19th, 2011 22:29
'10 GOLF TDI, 59.9 MPG, 921 ml/tank range RomanL TDI Fuel Economy 6 January 27th, 2011 08:18
WTB - 6-12 yr old, 5-spd TDI Jetta, 4-dr Golf, or Passat in San Antonio, TX Area unbiker TDI Cars for Sale/Wanted 0 December 29th, 2010 08:41
Frostheater fits 09-10' Jetta & 10' Golf jasonTDI VW MKVI-A6 Golf family including Jetta SportWagen (~ 2010-2014) 0 December 23rd, 2009 17:50
10 or 12 mm GP on 96 passat tdi tdjoe VW MKIV-A4 TDIs (VE and PD) 3 October 28th, 2003 06:05


All times are GMT -7. The time now is 23:45.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2020, All Rights Reserved
Page generated in 0.18115 seconds with 11 queries
[Output: 129.09 Kb. compressed to 107.91 Kb. by saving 21.18 Kb. (16.41%)]