Disappointing fuel economy '13 TDI while towing - Page 3 - Club Touareg Forums
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post #21 of 27 Old 3 Weeks Ago Thread Starter
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Did a log before I cleaned up the carbon and saw that commanded boost was to be 1000 hPa and actual was 972. That is only .5 psi than commanded, so probably within spec. Also saw 603 nm engine torque on one of my full throttle acceleration runs, which converts to 444 ft lbs.

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post #22 of 27 Old 3 Weeks Ago
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Quote:
Originally Posted by VWRalf View Post
Also saw 603 nm engine torque on one of my full throttle acceleration runs, which converts to 444 ft lbs.
Theres an onboard torque sensor?
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post #23 of 27 Old 3 Weeks Ago Thread Starter
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Quote:
Originally Posted by NTDI View Post
Theres an onboard torque sensor?
Not sure how it calculates engine torque (probably through the transmission), but there is the option to measure engine torque in the log through VCDS.

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post #24 of 27 Old 3 Weeks Ago
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Quote:
Originally Posted by VWRalf View Post
... there is the option to measure engine torque in the log through VCDS.
So HP = torque x rpm /5252

When torque is in ftlbs


Sounds like an onboard dyno 😄
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Bought a 2012 Lux tdi this weekend. Test drive showed 24.6 average mpg. They performed the fix the next day and I drove 250 miles Chicago to Lansing... mpg average 16.4, no trailer. Can anyone explain this? Next day trailer test with 2000# Shasta camper, high and flat, showed 14.8mpg. Also note, while looking at aftermarket backup cameras I discovered this 2012 is more likely a Gen 2 vehicle as far as software. No versions are listed, simply MU software: 0319. Thoughts?
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post #26 of 27 Old 17 Hours Ago
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I bought a 2012 Lux TDI in 2015 with just under 124K. It spent most of its life until then as a freeway cruiser here in my adopted New York state and, apparently, New England. Before I sold it back to VW last November with not quite 149k it spend its time in short distance suburban low speed stop and go service outside of metro NYC with occasional freeway trips. Even with lots of idling in winter warm ups and at traffic lights my year round average mpg was, rounding off, in the 17-22 mpg range. When stretches of highway and interstate driving were included the mileage jumped to the mid 20s. On an extended trip to Eastern Canada and coastal New England where I tended to cruise in the 70-80 mph range, when road conditions allowed me to do so, I averaged 26-28 mpg with four passengers and a fully loaded cargo area.


Dealer Serviced during my ownership, I used the correct VW approved Castrol brand oil. Only Shell Diesel with their highest grade used when in Canada. If I was still in my home state of California, like I did with my former Golf TDI, I would have only used Chevron diesel. Tires inflated to VW specs. and under my ownership I fitted with Pirelle's Scorpion Verde All Season Plus tires when I first got the Touareg which it still had when I sold it back to VW.


VW considered my Touareg a Generation 1. As with my Golf TDI, the only reason I sold it back to VW was that the buy back offer was too good. I actually turned a profit and used the proceeds to pay off the bulk of my oldest daughter's college student loans. I replaced it with an Alltrack S.
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post #27 of 27 Old 2 Hours Ago
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Shasta,


Something seems off to me. What speed were you driving?


My '13 consistently gets 29.8 MPG highway at 75 MPH and up to 32 MPG at 60 MPH. Around town I average around 18-19 depending on how much fun I'm having and how bad traffic is.


As far as I know my '13 has had the fix performed. The only real change is DEF use from what I've read/heard. I find I have to top the DEF tank every 3,000 to 4,000 miles. Autozone and O'Reily's have DEF for $10-$12 per 2.5 gallon not a huge deal to me.




As to your mileage have you checked your air filter? Also may want to get a log of the sensors while driving if you happen to have a VCDs. It sounds like something is off somewhere.
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