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AWD - Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming

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Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

Hi Folks. Haven't posted here in many year but wanted to fill you all in on a situation of interest.

I recently purchased an absolutely beautiful 2012 Volvo XC70 T6 Platinum. Despite its 128K miles on the odometer, the car was driven in Maryland for the US portion of its life, never seeing road salt. The vehicle was actually purchased in England and driven there for a year or so before being shipped to the US. The original owner took such good car of the car, it looks brand new inside and out. The owner told me that when he was driving the car in Britain, he routinely got 35 mpg on the highway. When he had it shipped to the US upon moving back, he took it to the Volvo dealer for regular servicing wherein Volvo "reprogrammed" the car. Subsequent to the reprogramming, the car saw a 10+mpg drop in fuel efficiency. I found the story shocking and discouraging. My guess is that US emission standards are the culprit, resulting in changes to the air/fuel mixtures resulting in a richer burn to reduce NOx emissions. These changes have resulted in a greater than 30% reduction in the car's fuel economy if the previous owner is right on all of this.

So, I have a few questions:

1 - Have others experienced the same phenomenon?

2 - What are Brickboard members in Canada and Europe seeing in terms of mpg (kpg) fuel economy numbers?
3- Are there any Volvo dealer mechanics out there that can verify the accuracy of what the previous owner has stated to me?

4 - If this is the result of a programming change to the US sold / operated Volvos, is there a way to get hold of and install the European programming on the cars stateside? I was thinking that if Canada's Volvo's operate with the more fuel efficient European programming, that maybe I could get my car reprogrammed in Canada?

I would be interested in any and all feedback on this subject matter, including accuracy of the original higher mpg fuel efficiency claim that is the original reason for this post.

Thanks.





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    Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

    I realize this message is quite old, but -- did you think about the difference between Imperial and US gallons?

    The change in programming likely just set the car to recognize US gallons, which are about 20% less than an Imperial gallon. The miles in both countries are the same, so in the UK you get more miles per gallon.





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    Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

    In Europe they use an "Imperial gallons", which is a larger volume than the US gallon. One Imperial gallon = 1.2 US gallons. If the UK trip meter measures European standards then the MPG would be higher than a trip meter measuring a US standards. Could be the confusion. Did the US Volvo tech reprogram the trip computer?





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    Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

    "The owner told me that when he was driving the car in Britain, he routinely got 35 mpg on the highway."

    Original owner is correct, but the Brits use Imperial gallons. The Imperial gallon is equal to 1.2 US gallons or 4.5 liters. The larger gallon will show quite an increase in MPG.

    Also, the 10% ethanol will also decrease MPG a bit, along with US pollution controls being stricter than Britain.

    --
    Keeping it running is better than buying new





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    Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

    I wonder if your disappointing mpg figures are a result of using E10 (ethanol) blended US fuel.

    It's no secret that E10 will result in 10%-20% increase in fuel consumption.





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      Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

      I am actually was not disappointed in the mileage I was getting during highway drives; I got a little over 25 mpg during a 15 hour drive from Tennessee to Vermont. It was after telling the previous owner how well the car did on gas that he told me the story about seen the mpg reduction to 25 mpg from 35 mpg highway. The mpg's I am experiencing are consistent with EPA highway ratings and what others in the US are seeing. I expect you may be right that if I use non-ethanol premium fuel, I may see an improvement. I will give that a try and report back what I experience.
      --
      John Brabant





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        Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

        Good luck finding non-ethanol blended fuel in the northeast.
        I haven't seen it here in ages. Though I think CAM2 is ethanol free and easier to find in the summer months but it's big $$.





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          Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

          A number of stations are carrying it here in Vermont, but only in premium grade. It is about $.30 more per gallon however.
          --
          John Brabant





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            Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

            I’m kinda wondering if original owner didn’t screw up his km/mpg to miles/mpg arithmetic.
            --
            Current rides: 2005 Volvo S80 2.5T, 2003 Volvo V70 2.4NA, 1973 Volvo 1800ES (getting ever closer to road worthiness)





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              Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

              That may be. I was thinking that. When Volvo in the US did the reprogram, they would have set the odometer for miles from kilometers at that point in time if he didn't already. I posted wanting to hear from peeps in Europe as to their fuel economy experience.
              --
              John Brabant





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                Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

                John
                Any idea how Volvo xc70’s are reprogrammed or better can they programmed?





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                  Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

                  I only know that the Volvo dealer performed the reprogram when the car was stateside.
                  --
                  John Brabant 2012 XC70 T6 Platinum





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                    Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

                    Where in VT are you? I am looking for that exact car, and would love to know where you found this one. Do you have insights on locating cars like this? (I'm in South Burlington)





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                      Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

                      Hi KCookVT:

                      I am located near Montpelier. I have given up on buying cars in VT. They see too much abuse, between the road salt, muddy, rutty backroads, stone chips, and sand blasted windshields, so I bought this beauty in Knoxville, TN. I searched for this car and found it on CarGurus.com website. I did a national search. It is a T6 Platinum, the highest level model.The dealer discounted the car by the amount of my airline ticket, then picked me up at the airport with this flawless car. Cars down there are in awesome shape and better priced than the beat up cars for sale used up here in Vermont. Email me at my address below and I will help you out: adamanthillsfarm@yahoo.com
                      --
                      John Brabant 2012 XC70 T6 Platinum





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                      Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

                      This past October 2018 I had to purchase another Volvo Car. I searched through VT, NH, ME, MA, NY, CT, RI, NJ. I used CarGurus.com site and put in my search info.

                      I looked at 52 Volvo XC70's within 3 weeks.

                      I picked up a 2012 Volvo XC70 T6 AWD with 140k on it for a great price.

                      When I picked it up the cars computer was reading a little over 17 mpg on it.
                      The first thing I did when I had to fill the tank with gas was add in a bottle of my Amsoil Performance Improver. Within the next two tank refills my fuel economy on the car was up to 19 mpg. I then switched out the oil and filter with my Amsoil 5W-30 (ASL), a Mann Filter after I used my Amsoil Engine Flush product. Now, after 5k of this my fuel economy is up to 23 mpg. After 7.5k I replaced the oil filter with a new Mann Filter and topped off the oil in the crankcase. I went another 7.5k on the car and did another complete change of the oil/filter with another engine flush. Then shortly after doing this change over I had the tranny fluid switched out to the Amsoil (ATL) and fuel economy is up to 26 mpg. On a few tank fuels I have hit over 30 mpg average.

                      Just this last week I switched out the Axle fluids to my Amsoil SVG (75W-90) gear fluids and replaced the AOC Filter and Fluids. I'm looking at getting this vehicle over the 30 mpg average consistently.


                      Does anyone out here know anything about the performance upgrade to the PoleStar for Volvo's?

                      Let me know.

                      Bob
                      rpiescik@weareoil.com





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                        Euro purchased 2012 XC70 T6 sees MPG reduction upon US reprogramming V70-XC70

                        The Polestar upgrade is really unnecessary unless you are looking to race it around. From what I understand, it changes the shifting parameters in the tranny and engine timing parameters. It will not enhance your MPGs, rather you may see a reduction in MPGs as a result. But you will end up with a bit more horsepower.
                        --
                        John Brabant 2012 XC70 T6 Platinum





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