keep an eye on your mpg

halfmonkey · 11-14-2011, 02:22 PM

I normally get about 400 miles to a tank. I recently replaced my run-crap tires to non run-crap tires and I also just so happened to notice that I was only getting about 350 miles a tank or so. I thought this was due to the new tires being non run-flats and so I added air and that didn't help. Then my car started acting up and I thought it was the hpfp becuase I got the reduced power notice but I also got the dsc malfunction. (you can search for a recent thread of mine for all of the details) After the dealer fixed it, my miles per tank is back to about 400 miles a tank.

So a word of warning. If you notice your mileage decreasing, I would say to be prepared for some engine troubles, at least with regards to the injectors or dme as was the case for my car.

JohnSprm69 · 11-14-2011, 02:26 PM

Quote:

Originally Posted by halfmonkey

I normally get about 400 miles to a tank.

damn!!!!! you must do a lot of highway driving with no traffic.

i wish i got that mileage.

cole92 · 11-14-2011, 02:34 PM

I get 430 - 460 miles on a tank

halfmonkey · 11-14-2011, 02:40 PM

Quote:

Originally Posted by Johnsprm69

damn!!!!! you must do a lot of highway driving with no traffic.

i wish i got that mileage.

My commute to work is 30 miles each way but I actually do get pretty good traffic. I live in San Diego but most of the 30 miles each way is on the freeway and not city streets. My current trip computer says my avg speed is about 42 mph and my average mpg is about 25.2.

Stein67 · 11-14-2011, 02:46 PM

I get right at 450. My long term stored average MPG wavers between 28.3 and 28.6.

edirtaynine · 11-14-2011, 03:01 PM

damn 400? i can only do that if i drive 99% highway. LOL. last time i got 330miles and had a 1/4 tank left. this was all highway with zero traffic lol

JohnSprm69 · 11-14-2011, 03:55 PM

Quote:

Originally Posted by edirtaynine

damn 400? i can only do that if i drive 99% highway. LOL.

+1

Haus_07 · 11-14-2011, 04:10 PM

Running 60% E85 I'm lucky to see 250 a tank.

username604 · 11-14-2011, 05:22 PM

When i got my car i was averaging about 22 or so mpg. Up until a month or so ago i was averaging 18 mpg.
Then i got 2 tickets and now i'm back at 21.3 mpg

it's a difference of $20 a month or so

NjPrince · 11-14-2011, 05:45 PM

15.6mpg..anyone want to suggest anything? All city driving but im easy on the gas and Im pretty sure 15.6 isnt that great.

halfmonkey · 11-14-2011, 05:52 PM

Quote:

Originally Posted by Njprince0226

15.6mpg..anyone want to suggest anything? All city driving but im easy on the gas and Im pretty sure 15.6 isnt that great.

other than the usual maintenance items to make sure everything is in tip top shape, I would suggest making sure your tires are properly inflated. That's an easy way to get 1-2 mpg more.

M340i Pride · 11-14-2011, 05:57 PM

Quote:

Originally Posted by cole92

I get 430 - 460 miles on a tank

right there with you

Route 16 · 11-14-2011, 06:13 PM

bone stock non-rft's 420-430mpg.

cone intake, eisenmann full exhaust 400mpg.

stock intake, eisenmann full exhaust, will find out this thursday.

Coolieman1220 · 11-14-2011, 07:35 PM

550-600 miles a tank!

D
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S
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fdriller9 · 11-14-2011, 08:09 PM

Quote:

Originally Posted by Haus_07

Running 60% E85 I'm lucky to see 250 a tank.

Wait. You're running E85 in your E9x? Did you prep the engine to run on E85?

If not say good by to all your gaskets, hoses, and seals.

PA66400 · 11-14-2011, 08:46 PM

Quote:

Running 60% E85 I'm lucky to see 250 a tank.

Are you serious? These cars can't run E85, as far as I know.......

Stein67 · 11-14-2011, 09:32 PM

Quote:

Originally Posted by *********

Wait. You're running E85 in your E9x? Did you prep the engine to run on E85?

If not say good by to all your gaskets, hoses, and seals.

Quote:

Originally Posted by PA66400

Are you serious? These cars can't run E85, as far as I know.......

ROFL

If you see his mod list he can handle fueling with E85.

And no, modern cars don't magically melt because of E85.

That said, don't try running it unless you have the piggyback and injectors to handle the extra 30% of fuel needed (roughly) to do it. Some wonderful gains to be had from E85.

ndog14 · 11-14-2011, 09:37 PM

I average between 22.4 and 26 depending if I do more highway than usual.

cole92 · 11-14-2011, 11:06 PM

Quote:

Originally Posted by yoko kai

bone stock non-rft's 420-430mpg.

cone intake, eisenmann full exhaust 400mpg.

stock intake, eisenmann full exhaust, will find out this thursday.

Damn!!! 400mpg?!?! That's better than the new i8

AWD Addict · 11-14-2011, 11:48 PM

300mi/tank here w/ lots of city driving. I can do 400+ if I'm all hwy, but thats rare.

Antony_correia11 · 11-15-2011, 02:32 AM

How can you get 400 a tank in San Diego? Thats really good, in my 328i I struggle to get 300 with about 40/60 city/highway here in San Diego.

TheTallJS · 11-15-2011, 02:47 AM

420 full tank on my e90 325i, but notice it going higher with the recent ecu flash. used to do lots of hwy, but now just short commutes average about 45 mph in 6th gear.

11-14-2011, 02:22 PM	#1
halfmonkey Second Lieutenant 47 Rep 222 Posts Drives: '08 Montego Blue 335i Join Date: Nov 2007 Location: San Diego iTrader: (0)	keep an eye on your mpg I normally get about 400 miles to a tank. I recently replaced my run-crap tires to non run-crap tires and I also just so happened to notice that I was only getting about 350 miles a tank or so. I thought this was due to the new tires being non run-flats and so I added air and that didn't help. Then my car started acting up and I thought it was the hpfp becuase I got the reduced power notice but I also got the dsc malfunction. (you can search for a recent thread of mine for all of the details) After the dealer fixed it, my miles per tank is back to about 400 miles a tank. So a word of warning. If you notice your mileage decreasing, I would say to be prepared for some engine troubles, at least with regards to the injectors or dme as was the case for my car. __________________ '08 Montego Blue 335i, auto, grey leather, aluminum trim, 50% ceramic Llumar tint on all windows except windshield - all options except active steering, active cruise control, and HD radio '01 Lexus IS300 - gone but not forgotten
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11-14-2011, 02:34 PM	#3
cole92 Second Lieutenant 5 Rep 270 Posts Drives: too much Join Date: Sep 2011 Location: SoFlo / Tri-state / Mid-Atlantic iTrader: (0)	I get 430 - 460 miles on a tank
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11-14-2011, 02:46 PM	#5
Stein67 Private First Class 5 Rep 128 Posts Drives: 08 E90 335i Join Date: Sep 2011 Location: Nebraska iTrader: (0)	I get right at 450. My long term stored average MPG wavers between 28.3 and 28.6.
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11-14-2011, 03:01 PM	#6
edirtaynine Major General 81 Rep 6,092 Posts Drives: e92 Join Date: Mar 2011 Location: SoCal iTrader: (0)	damn 400? i can only do that if i drive 99% highway. LOL. last time i got 330miles and had a 1/4 tank left. this was all highway with zero traffic lol
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11-14-2011, 04:10 PM	#8
Haus_07 E85 is my friend 19 Rep 224 Posts Drives: 2007 E90 335 Join Date: Sep 2010 Location: Mesa, AZ iTrader: (0)	Running 60% E85 I'm lucky to see 250 a tank. __________________ //sparkling graphite metallic // sport package // logic 7 // m-tech wheel // HID fogs // LED angels // M3 style CF hood // matte black kindney's // AFE DCI // kittyless DP's // custom SS exhaust // Godspeed FMIC // 15ohm JB4// DV Mod //
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11-14-2011, 05:22 PM	#9
username604 Colonel 124 Rep 2,554 Posts Drives: bmw Join Date: Sep 2010 Location: repair shop iTrader: (0) Garage List 2008 BMW 335i [10.00]	When i got my car i was averaging about 22 or so mpg. Up until a month or so ago i was averaging 18 mpg. Then i got 2 tickets and now i'm back at 21.3 mpg it's a difference of $20 a month or so
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11-14-2011, 05:45 PM	#10
NjPrince Captain 82 Rep 790 Posts Drives: 22' M3 Comp Join Date: Sep 2011 Location: NJ iTrader: (1)	15.6mpg..anyone want to suggest anything? All city driving but im easy on the gas and Im pretty sure 15.6 isnt that great.
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11-14-2011, 06:13 PM	#13
Route 16 I got lei'd 844 Rep 7,593 Posts Drives: '10 E90 M3 Join Date: Sep 2011 Location: Dark Side of the Moon iTrader: (62)	bone stock non-rft's 420-430mpg. cone intake, eisenmann full exhaust 400mpg. stock intake, eisenmann full exhaust, will find out this thursday.
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11-14-2011, 07:35 PM	#14
Coolieman1220 Banned 73 Rep 1,770 Posts Drives: 2010 335d Join Date: Jul 2010 Location: New York City iTrader: (0)	550-600 miles a tank! D I E S E L
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11-14-2011, 09:37 PM	#18
ndog14 Banned 52 Rep 1,746 Posts Drives: E90 328xi 6MT Join Date: Aug 2011 Location: Pittsburgh, PA iTrader: (0)	I average between 22.4 and 26 depending if I do more highway than usual.
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11-14-2011, 11:48 PM	#20
AWD Addict Chief Executive 300 Rep 2,886 Posts Drives: 2008 335xi 6spd Coupe Join Date: Dec 2007 Location: Boston iTrader: (1) Garage List 2008 335xi [0.00]	300mi/tank here w/ lots of city driving. I can do 400+ if I'm all hwy, but thats rare.
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11-15-2011, 02:32 AM	#21
Antony_correia11 Private First Class 15 Rep 141 Posts Drives: 2011 E90 328i Join Date: May 2011 Location: Northridge iTrader: (0)	How can you get 400 a tank in San Diego? Thats really good, in my 328i I struggle to get 300 with about 40/60 city/highway here in San Diego.
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11-15-2011, 02:47 AM	#22
TheTallJS Member 30 Rep 115 Posts Drives: Metallic Black 2006 325i Join Date: Sep 2009 Location: San Francisco iTrader: (0) Garage List 2006 BMW 325i [0.00]	420 full tank on my e90 325i, but notice it going higher with the recent ecu flash. used to do lots of hwy, but now just short commutes average about 45 mph in 6th gear.
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