Gas mileage FTL :-(

HyperM3 · 06-13-2007, 07:35 AM

I dont know what is going on here but my MPG is deplorable. Last tank I averaged 17.6mpg. I cant understand how this happens.

I drive 25 miles each way to work in traffic thats any from stop to 80mph. It typically takes me 45 mins to get to work in this traffic. If there were no traffic it would take me about 20 mins.

Just for kicks, I decided this tankfull I was going to stay out of boost entirely. Being that I have a boost gauge, this makes it easy to see.

Im now down 1/4 of a tank and have gone 92 miles. While this is much better than what I got before, its still only averaging a bit over 20mpg. To me, its not really worth staying out of boost and not having fun.

Is traffic taking THAT much of a toll on my mpg? Or is there something wrong with my fuel system?

elucas730 · 06-13-2007, 07:40 AM

Quote:

Originally Posted by HyperM3

Im now down 1/4 of a tank and have gone 92 miles. While this is much better than what I got before, its still only averaging a bit over 20mpg. To me, its not really worth staying out of boost and not having fun.

I wouldn't recommend using the gas gauge as a very accurate judge of how much you've actually used. Wait for the rest of the tank to be used before judging. I know on my STi that the first 1/4 goes down much faster than the last 1/4.

HyperM3 · 06-13-2007, 07:57 AM

Quote:

Originally Posted by elucas730

I wouldn't recommend using the gas gauge as a very accurate judge of how much you've actually used. Wait for the rest of the tank to be used before judging. I know on my STi that the first 1/4 goes down much faster than the last 1/4.

Honestly, the computer gauge is pretty accurate Ive found. Also I find that when I turn my car on after a long drive, the gas needle is about 1 tick lower than before.

STE92VE · 06-13-2007, 08:21 AM

Quote:

Originally Posted by HyperM3

Im now down 1/4 of a tank and have gone 92 miles. While this is much better than what I got before, its still only averaging a bit over 20mpg.

With a 16 gallon tank you have used approximately 4 gallons and traveled 92 miles. That is an average of 23mpg. You are getting better mileage than you have calculated.

Feel better now?

Chi-town330 · 06-13-2007, 08:21 AM

I find my gas mileage (E90 330) varies greatly depending on the driving style, so this doesn't surprise me. For city driving, I am in the high teens for MPG, and I drive gently (too gently, too many people walking around the city - it's killing me).

For my 50 miles highway trips down to Indiana, I can average very close to 30 MPG. The difference is amazing.

I see your point and agree with you - stop and go traffic seems to have a larger impact on the E90 mileage than other cars I have owned - although I admit I haven't really examined this closely, and have only put a few tanks of gas in the car (drive it about 150 miles per month on average, what a crime).

HyperM3 · 06-13-2007, 08:32 AM

Quote:

Originally Posted by STE92VE

With a 16 gallon tank you have used approximately 4 gallons and traveled 92 miles. That is an average of 23mpg. You are getting better mileage than you have calculated.

Feel better now?

I filled up yesterday and put in exactly 15 gallons. Had 258 miles on that tank. As much sense as it seems to make, not getting on boost really works to save gas. LOL this is where you all say DUH. But its so hard to stay out of boost.

itsbrokeagain · 06-13-2007, 08:37 AM

Quote:

Originally Posted by HyperM3

I filled up yesterday and put in exactly 15 gallons. Had 258 miles on that tank. As much sense as it seems to make, not getting on boost really works to save gas. LOL this is where you all say DUH. But its so hard to stay out of boost.

258 huh? Sheesh..I guess I have more tolerance than most people here.

I constantly average 350 or more to a tank of gas. Cruise control is your friend!

I constantly make trips to NJ, CT or Philly...so all the highway driving I get great gas mileage..my best tank was 382 miles. Stop and go traffic really kills things though...I would only get about 280-300 if I did a lot of stop and go traffic. I just leave the active MPG gauge on, on the dash all the time...when I see that magical 35-36mpg cruising at 65, I like to keep my foot out of it...just knowing that the honda civic next to me is trying to make that, and its only 4 cylinders and no boost

ward · 06-13-2007, 08:53 AM

you must have your foot in that throttle plenty

isn't the 335 supposed to get near 30 mpg on the freeway?

I get over 350 per tank in normal use, and can get 400 on road trips

HyperM3 · 06-13-2007, 08:54 AM

Yeah, I guess a lot has to do with my traffic driving. I havent taken it on any long trips yet so I cant say Ive stretched its legs. Oh well, looks like Ill just accept my fate. On with the boost.

DCJAX · 06-13-2007, 08:59 AM

Quote:

Originally Posted by HyperM3

I dont know what is going on here but my MPG is deplorable. Last tank I averaged 17.6mpg. I cant understand how this happens.

I drive 25 miles each way to work in traffic thats any from stop to 80mph. It typically takes me 45 mins to get to work in this traffic. If there were no traffic it would take me about 20 mins.

Just for kicks, I decided this tankfull I was going to stay out of boost entirely. Being that I have a boost gauge, this makes it easy to see.

Im now down 1/4 of a tank and have gone 92 miles. While this is much better than what I got before, its still only averaging a bit over 20mpg. To me, its not really worth staying out of boost and not having fun.

Is traffic taking THAT much of a toll on my mpg? Or is there something wrong with my fuel system?

Yes, it's all about the traffic. Dealing with the 0-80mph speed range and stop and go traffice sucks down the juice like a champ. I noticed a huge difference when I had to deal with that.

boomer3 · 06-13-2007, 09:11 AM

Quote:

Originally Posted by HyperM3

I dont know what is going on here but my MPG is deplorable. Last tank I averaged 17.6mpg. I cant understand how this happens.

I drive 25 miles each way to work in traffic thats any from stop to 80mph. It typically takes me 45 mins to get to work in this traffic. If there were no traffic it would take me about 20 mins.

Just for kicks, I decided this tankfull I was going to stay out of boost entirely. Being that I have a boost gauge, this makes it easy to see.

Im now down 1/4 of a tank and have gone 92 miles. While this is much better than what I got before, its still only averaging a bit over 20mpg. To me, its not really worth staying out of boost and not having fun.

Is traffic taking THAT much of a toll on my mpg? Or is there something wrong with my fuel system?

I am also disappointed with fuel efficiency - averaging 16-17mpg city driving...Hoping to take a 500mi trip soon, so will see what hwy driving is like..

Potty_Pants · 06-13-2007, 09:18 AM

I was getting 16 MPG when i drove lightly on my G... anything over that is a plus.

I have noticed with the 335i... a milimeter of travel of the gas pedal reflects a couple or more mpg savings. try easing back while crusing and see how it goes.

Try to adjust your driving style.

ppp

ward · 06-13-2007, 09:20 AM

Quote:

Originally Posted by boomer3

I am also disappointed with fuel efficiency - averaging 16-17mpg city driving...Hoping to take a 500mi trip soon, so will see what hwy driving is like..

your mileage is completely dependant on how you operate your vehicle

as long as your tires are inflated properly and the car is running properly

I can get 11 mpg on a racetrack, or 33 mpg on the freeway
I'm sure you could do the same

///McRae · 06-13-2007, 09:58 AM

Quote:

Originally Posted by HyperM3

I dont know what is going on here but my MPG is deplorable. Last tank I averaged 17.6mpg. I cant understand how this happens.

I drive 25 miles each way to work in traffic thats any from stop to 80mph. It typically takes me 45 mins to get to work in this traffic. If there were no traffic it would take me about 20 mins.

Just for kicks, I decided this tankfull I was going to stay out of boost entirely. Being that I have a boost gauge, this makes it easy to see.

Im now down 1/4 of a tank and have gone 92 miles. While this is much better than what I got before, its still only averaging a bit over 20mpg. To me, its not really worth staying out of boost and not having fun.

Is traffic taking THAT much of a toll on my mpg? Or is there something wrong with my fuel system?

I have a 2006 325i and my gas mileage is about the same. I have a 10-15 minute drive to work all in stop-start-stop-start traffic.

CleanAudi · 06-13-2007, 01:23 PM

Im doing 14 MPG on my 335i 6spd. Only doing about 200 miles to a tank

ward · 06-13-2007, 01:25 PM

Quote:

Originally Posted by CleanAudi

Im doing 14 MPG on my 335i 6spd. Only doing about 200 miles to a tank

sounds like fun

Revlis · 06-13-2007, 02:00 PM

Screw it!!!! Don't even worry about it...

Fill up when you need gas, and drive the shit outta the thing.

Seriously, you'll be surprised at just how much happier and more enjoyable you'll find the driving experience when you simply don't worry about fuel costs/mileage.

You have to have gas, you enjoy riving or you wouldn't have spent the money on a BMW. So just drive that thing, live on the boost, and be happy...

Sweat the bigger things.

De90man · 06-13-2007, 02:29 PM

If you keep it under 2500rpms you will get 20+ mpg even in the worse stop-n-go traffic. The torque really helps here.

06-13-2007, 07:35 AM	#1
HyperM3 Too many Alex's, from now on, call me Beaufort 342 Rep 6,188 Posts Drives: See Sig Join Date: Feb 2007 Location: Lawrenceville, NJ iTrader: (8)	Gas mileage FTL :-( I dont know what is going on here but my MPG is deplorable. Last tank I averaged 17.6mpg. I cant understand how this happens. I drive 25 miles each way to work in traffic thats any from stop to 80mph. It typically takes me 45 mins to get to work in this traffic. If there were no traffic it would take me about 20 mins. Just for kicks, I decided this tankfull I was going to stay out of boost entirely. Being that I have a boost gauge, this makes it easy to see. Im now down 1/4 of a tank and have gone 92 miles. While this is much better than what I got before, its still only averaging a bit over 20mpg. To me, its not really worth staying out of boost and not having fun. Is traffic taking THAT much of a toll on my mpg? Or is there something wrong with my fuel system? __________________ 13 HD FatBob 17 A4 Glacier/Black 1st Edition/Pre+/Sport/EurocodeTMD/Racechip 16 S6 (gone),14 S6 (gone),14 S6 (gone),13 S6 (gone),10 S4 (gone) 07 335i(gone)
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06-13-2007, 08:21 AM	#5
Chi-town330 First Lieutenant 9 Rep 308 Posts Drives: E90 330i Join Date: Feb 2007 Location: Chicago iTrader: (0) Garage List 2006 E90 330i [0.00]	I find my gas mileage (E90 330) varies greatly depending on the driving style, so this doesn't surprise me. For city driving, I am in the high teens for MPG, and I drive gently (too gently, too many people walking around the city - it's killing me). For my 50 miles highway trips down to Indiana, I can average very close to 30 MPG. The difference is amazing. I see your point and agree with you - stop and go traffic seems to have a larger impact on the E90 mileage than other cars I have owned - although I admit I haven't really examined this closely, and have only put a few tanks of gas in the car (drive it about 150 miles per month on average, what a crime).
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06-13-2007, 08:53 AM	#8
ward Major General 155 Rep 6,158 Posts Drives: F Join Date: May 2005 Location: T iTrader: (0)	you must have your foot in that throttle plenty isn't the 335 supposed to get near 30 mpg on the freeway? I get over 350 per tank in normal use, and can get 400 on road trips
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06-13-2007, 08:54 AM	#9
HyperM3 Too many Alex's, from now on, call me Beaufort 342 Rep 6,188 Posts Drives: See Sig Join Date: Feb 2007 Location: Lawrenceville, NJ iTrader: (8)	Yeah, I guess a lot has to do with my traffic driving. I havent taken it on any long trips yet so I cant say Ive stretched its legs. Oh well, looks like Ill just accept my fate. On with the boost. __________________ 13 HD FatBob 17 A4 Glacier/Black 1st Edition/Pre+/Sport/EurocodeTMD/Racechip 16 S6 (gone),14 S6 (gone),14 S6 (gone),13 S6 (gone),10 S4 (gone) 07 335i(gone)
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06-13-2007, 09:18 AM	#12
Potty_Pants Colonel 66 Rep 2,189 Posts Drives: 2012 Genesis Sedan Rspec Join Date: Apr 2007 Location: Southern NJ iTrader: (0)	I was getting 16 MPG when i drove lightly on my G... anything over that is a plus. I have noticed with the 335i... a milimeter of travel of the gas pedal reflects a couple or more mpg savings. try easing back while crusing and see how it goes. Try to adjust your driving style. ppp __________________ Olds Starfire > Chevy Malibu > Isuzu I-mark RS & Honda Magna 500 > Grand Am GT & YSR50 > Nissan Maxima & Ninja 750 > X-Wife > Hyundai Excel > Honda Prelude > Honda Accord > Honda Prelude & Ninja 250> Infiniti G35 > E90 335i > Hyundai Genesis Rspec, Hyunadai Sonata > Kia Sorento > Honda CRV-EX
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06-13-2007, 01:23 PM	#15
CleanAudi Second Lieutenant 34 Rep 262 Posts Drives: BMW F82 M4 Join Date: Jan 2007 Location: USA iTrader: (0)	Im doing 14 MPG on my 335i 6spd. Only doing about 200 miles to a tank
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06-13-2007, 02:00 PM	#17
Revlis Now With 33% MORE Sarcasm Free! 157 Rep 3,462 Posts Drives: M4 i3 X3 Join Date: Feb 2007 Location: Phoenix AZ iTrader: (0)	Screw it!!!! Don't even worry about it... Fill up when you need gas, and drive the shit outta the thing. Seriously, you'll be surprised at just how much happier and more enjoyable you'll find the driving experience when you simply don't worry about fuel costs/mileage. You have to have gas, you enjoy riving or you wouldn't have spent the money on a BMW. So just drive that thing, live on the boost, and be happy... Sweat the bigger things. __________________ A BMW is Just a Car, it doesn't make you smart, handsome, clever, better, cool, or wealthy.
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06-13-2007, 02:29 PM	#18
De90man First Lieutenant 8 Rep 350 Posts Drives: F30 335i Sedan Join Date: Feb 2007 Location: Los Angeles iTrader: (1)	If you keep it under 2500rpms you will get 20+ mpg even in the worse stop-n-go traffic. The torque really helps here.
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