Mpg

Kjelly · 04-04-2014, 05:50 AM

Quote:

Originally Posted by Mark M

30 or 32 mpg seems normal. My daily commute is 75 miles round trip. 70% highway. I get 30 to 32 mpg depending how I drive. As reference I also just had carbon cleaning done back in November.

Of note, on my 335d, the car's OBC was VERY optimistic by 15%. I went into the hidden settings and adjusted the mpg correction factor and now I am within 1 mpg when comparing OBC and hand calculations. Those claiming to get 40+ mpg I tend to think that is not really hand calculated mileage.

That's interesting because mine shows worst than the hand calculation (or at least the Fuelly app). Last fillup, OBC had 36.1, hand calc of 37.4. My OBC is consistently 3-5% lower than actual #'s...

335dFan · 04-04-2014, 07:41 AM

Quote:

Originally Posted by Kjelly

That's interesting because mine shows worst than the hand calculation (or at least the Fuelly app). Last fillup, OBC had 36.1, hand calc of 37.4. My OBC is consistently 3-5% lower than actual #'s...

Yeah, me too. The OBC on mine is always 1-2 mpg lower than the hand calculated value.

AzureHaze · 04-04-2014, 01:10 PM

Quote:

Originally Posted by GreekboyD

DS mode will no doubt consume more fuel for sure.

Yeah but by how much? I'm only thinking a 2-3mpg difference between DS and D mode.

335dFan · 04-04-2014, 01:23 PM

Quote:

Originally Posted by AzureHaze

Yeah but by how much? I'm only thinking a 2-3mpg difference between DS and D mode.

For my experience early on with DS versus D, it was only a 1-2 mpg difference. However, it's hard to judge, because I was driving more aggressively in DS than I would in D, so that plays into it.

Long ago I posted in a discussion about the basically 4 programs that were in effect with our cars engine management. A steady state moderate program in both DS and D, and then another one for each of DS and D that came into play when you got aggressive. As I recall, the car stays in the aggressive program for a while after you stop being aggressive, and then it reverts to the "steady state" program.

I wish I could find that old thread.

dixy2k · 04-04-2014, 03:36 PM

Quote:

Originally Posted by m80theWolf

No idea how you guys are getting 30+ mpg if there's ANY city driving involved. Pure hwy I can do 35-40 mpg depending on speed and conditions, but my city is 18-22 mpg. Idling (like waiting for red lights) really seems like it kills me. and acceleration to 40 mph, even with a feather for a right foot keeps the instant read mpg gauge near pinned to the right side of the gauge. Something I should be worried about?

Since I replaced the injectors my MPG has improved.
I do a lot of city driving in Long Beach area too, it is really rare that the MPG gets to 27 overall. Mostly 30 MPG.

m80theWolf · 04-04-2014, 09:07 PM

Quote:

Originally Posted by dixy2k

Since I replaced the injectors my MPG has improved.
I do a lot of city driving in Long Beach area too, it is really rare that the MPG gets to 27 overall. Mostly 30 MPG.

How did you find out the injectors needed to be replaced? Cel? My car has been in for service twice this year (ac squeal), and I complained that my city mpg seemed low, but they couldn't find anything.

dixy2k · 04-04-2014, 09:12 PM

SES light on.

WreckerX5d · 04-04-2014, 10:52 PM

Quote:

Originally Posted by Kjelly

Quote:

Originally Posted by Mark M

30 or 32 mpg seems normal. My daily commute is 75 miles round trip. 70% highway. I get 30 to 32 mpg depending how I drive. As reference I also just had carbon cleaning done back in November.

Of note, on my 335d, the car's OBC was VERY optimistic by 15%. I went into the hidden settings and adjusted the mpg correction factor and now I am within 1 mpg when comparing OBC and hand calculations. Those claiming to get 40+ mpg I tend to think that is not really hand calculated mileage.

That's interesting because mine shows worst than the hand calculation (or at least the Fuelly app). Last fillup, OBC had 36.1, hand calc of 37.4. My OBC is consistently 3-5% lower than actual #'s...

Yep. Mines a consistent 2mpg less than fuelly calculated.

I tried searching a way to change the OBD MPG readout but I had no luck.

32valves · 04-05-2014, 09:44 PM

Quote:

Originally Posted by m80theWolf

Quote:

Originally Posted by dixy2k

Since I replaced the injectors my MPG has improved.
I do a lot of city driving in Long Beach area too, it is really rare that the MPG gets to 27 overall. Mostly 30 MPG.

How did you find out the injectors needed to be replaced? Cel? My car has been in for service twice this year (ac squeal), and I complained that my city mpg seemed low, but they couldn't find anything.

Weird I had a/c squeal also last summer every once and awhile. I got to add that to my list.

m80theWolf · 04-05-2014, 11:24 PM

Quote:

Originally Posted by 32valves

Weird I had a/c squeal also last summer every once and awhile. I got to add that to my list.

I had to take the car in twice - the first time they found an oil leak and fixed the offending hose, which stopped oil from dripping over all the belts. The noise kept coming back, so they replaced the ac drive belt. Seems fixed now.

mefferso · 04-09-2014, 02:14 PM

My typical daily driving is 80% highway with cruise set at 70-72. My hand calculated average in those conditions is 35-36 mpg. That includes 1 full throttle burst every day (I love interstate onramps!!) In recent all highway trips
@ 70mph its 40 mpg
@ 75mph its 38 mpg
@ 80mph its 36 mpg.
Speedo (which is what above speeds are based on) is about 4mph faster than my gps app shows. Hope that makes sense.

Col Mustard · 04-11-2014, 02:34 PM

04-04-2014, 09:12 PM	#29
dixy2k Major 89 Rep 1,151 Posts Drives: 335d Join Date: Nov 2009 Location: CA iTrader: (0)	SES light on.
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04-09-2014, 02:14 PM	#33
mefferso Second Lieutenant 44 Rep 239 Posts Drives: 2010 335d Join Date: Feb 2014 Location: Covington, Louisiana iTrader: (0)	My typical daily driving is 80% highway with cruise set at 70-72. My hand calculated average in those conditions is 35-36 mpg. That includes 1 full throttle burst every day (I love interstate onramps!!) In recent all highway trips @ 70mph its 40 mpg @ 75mph its 38 mpg @ 80mph its 36 mpg. Speedo (which is what above speeds are based on) is about 4mph faster than my gps app shows. Hope that makes sense. __________________
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04-11-2014, 02:34 PM	#34
Col Mustard Pushing Rope in the Cellar 11 Rep 83 Posts Drives: Former - 335d Montego Join Date: Mar 2012 Location: Sacramento Suburbia, CA iTrader: (0) Garage List 2010 335D [9.00]
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