reduced power/ fuel economy?????

spindiesel · 02-08-2012, 10:33 PM

So my 2011 335d is acting up a bit...... my mpg had been 33-36 a gallon, now its 25-27. Also it seems to have a bit of a delay accelerating, and is lacking the usual zip i am accustom to. I live in upstate ny, and was wondering if it just the winter blend of fuel. I have tried different stations without any improvement. Driving habits are the same, i have blizzak snows on factory rims too. I don't think these along with the winter blend should decrease my economy this much..... any ideas from other D drivers....thx

montr · 02-08-2012, 10:42 PM

If you do not have an SES, it could be the DPF regeneration cycle

F32Fleet · 02-09-2012, 08:12 AM

Something must have changed. Fuel economy will take a small hit on winter fuel and snow tires aren't known for economy. What kind of driving do you do?

spindiesel · 02-09-2012, 09:11 PM

No SES light, driving is 70 percent highway, 30 city, highway run 70-75..... guess I need to visit the dealership for a little testing.....

02-08-2012, 10:33 PM	#1
spindiesel First Lieutenant 371 Rep 310 Posts Drives: 2024 M3 Comp X drive Join Date: Apr 2011 Location: syracuse iTrader: (2)	reduced power/ fuel economy????? So my 2011 335d is acting up a bit...... my mpg had been 33-36 a gallon, now its 25-27. Also it seems to have a bit of a delay accelerating, and is lacking the usual zip i am accustom to. I live in upstate ny, and was wondering if it just the winter blend of fuel. I have tried different stations without any improvement. Driving habits are the same, i have blizzak snows on factory rims too. I don't think these along with the winter blend should decrease my economy this much..... any ideas from other D drivers....thx
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02-08-2012, 10:42 PM	#2
montr Captain 192 Rep 768 Posts Drives: 2010 335d, 2018 430i G-Coupe Join Date: Sep 2009 Location: Atlanta, GA iTrader: (0)	If you do not have an SES, it could be the DPF regeneration cycle
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02-09-2012, 08:12 AM	#3
F32Fleet Lieutenant General 3986 Rep 10,664 Posts Drives: 2015 435i Join Date: May 2005 Location: Southeastern US iTrader: (0)	Something must have changed. Fuel economy will take a small hit on winter fuel and snow tires aren't known for economy. What kind of driving do you do?
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02-09-2012, 09:11 PM	#4
spindiesel First Lieutenant 371 Rep 310 Posts Drives: 2024 M3 Comp X drive Join Date: Apr 2011 Location: syracuse iTrader: (2)	No SES light, driving is 70 percent highway, 30 city, highway run 70-75..... guess I need to visit the dealership for a little testing.....
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