Low Gas Mileage

Cir14 · 01-12-2012, 12:59 PM

Quote:

Originally Posted by nycbr

I have an XI and a heavy foot. I get about 17 mpg in the city. I get about 25 mpg on the highway, but that could be better if I could keep it under 80.

I can second this account. Just make ~800 mile trip from Philly to Vermont and averaged ~24mpg averaging 85-90mph on 87-N.

Tallest · 01-13-2012, 07:30 AM

i have a 325i but still, i can say this NA 6cyl in pre LCI is crap for fuel economy in city, just that. it's less tricky to fix later on compared to newer engines though so it's a tradeoff. but not a nice one. highway consumption is OK, but city is as bad as you say it is, yup.

Alvine90 · 10-01-2013, 01:57 AM

What should I be looking at if I get ~17mpg 75% city 25% highway? This is after cleaning the MAF and adding a bottle of techron. I had 15mpg before techron.

Car is a e90 330i w/ 46k miles, with a charcoal delete. I usually never go past 3000rpm and fill up with 76 91 octane. There are no error codes in INPA other than the unplugged muffler flap.

VTECaddict · 10-01-2013, 02:57 AM

I'd say that's normal. In socal you rarely get to cruise at a steady speed for longer than a minute. Always hitting stop signs, lights, traffic. That eats up gas like no other.

I got 14-15mpg 85% city shifting at 3000rpm and driving semi aggressively. Just as an experiment I've been shifting at 2000rpm, driving really gently, and utilzing a lot more neutral costing. Now I'm seeing a little over 18mpg in the same conditions.

330xtrai · 10-01-2013, 10:33 AM

in traffic and city the mpg is crap i average about 16 when there is traffic maybe lower sometimes i dropped to around 14.5 but when i drive highway it boots up to around 18 19 depends how aggressive i drive have. half of classes i go and leave around rush hour the other half i get nice empty roads. so it all depends on your driving conditions.

kewlguy210 · 10-01-2013, 08:59 PM

I got a E90 330xi and I'm getting 24-25 mpg. This is mix of 70/30 hwy and city.

Kirkies328 · 10-02-2013, 12:59 AM

The worst ive ever got was 168 miles. Which is 11 a gallon. The best ive ever gotten was 255 and that was from san diego to La. I get shit mileage

Ludey849 · 10-02-2013, 09:07 AM

Get new Sparkplugs and clean your maf sensor.

01-13-2012, 07:30 AM	#46
Tallest Major General 1820 Rep 6,541 Posts Drives: 911 Join Date: Sep 2007 Location: Sweden iTrader: (1) Garage List 2011 911 [10.00]	i have a 325i but still, i can say this NA 6cyl in pre LCI is crap for fuel economy in city, just that. it's less tricky to fix later on compared to newer engines though so it's a tradeoff. but not a nice one. highway consumption is OK, but city is as bad as you say it is, yup. __________________ 997.2 F30.F11.E86.E90.E90.E36
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10-01-2013, 01:57 AM	#47
Alvine90 Private First Class 7 Rep 175 Posts Drives: slow Join Date: Apr 2012 Location: Arcadia iTrader: (3)	What should I be looking at if I get ~17mpg 75% city 25% highway? This is after cleaning the MAF and adding a bottle of techron. I had 15mpg before techron. Car is a e90 330i w/ 46k miles, with a charcoal delete. I usually never go past 3000rpm and fill up with 76 91 octane. There are no error codes in INPA other than the unplugged muffler flap. __________________
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10-01-2013, 02:57 AM	#48
VTECaddict Where'd my VTEC go? 492 Rep 6,068 Posts Drives: 06 330i 6MT Join Date: Mar 2009 Location: Seattle, WA iTrader: (4)	I'd say that's normal. In socal you rarely get to cruise at a steady speed for longer than a minute. Always hitting stop signs, lights, traffic. That eats up gas like no other. I got 14-15mpg 85% city shifting at 3000rpm and driving semi aggressively. Just as an experiment I've been shifting at 2000rpm, driving really gently, and utilzing a lot more neutral costing. Now I'm seeing a little over 18mpg in the same conditions. __________________ AW/Terra \| ZSP \| ZPP \| ZCW \| iDrive \| CA Mods: BC BR coilovers \| Blacklines \| M-tech rear \| dual exhaust \| M3 steering wheel \| BMW SSK \| ZHP shift knob \| High-kick CF spoiler \| NBT Retrofit M3 front control arms \| M3 rear guide rods \| Manzo rear toe and camber links \| Monroe rear shock mounts \| Varrstoen ES1 19x9.5+20 Front, 19x11+25 rear
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10-01-2013, 10:33 AM	#49
330xtrai Do you even post BRO? 228 Rep 2,936 Posts Drives: 330xi Join Date: Jun 2012 Location: New Jersey iTrader: (1) Garage List 2006 BMW 330xi [0.00]	in traffic and city the mpg is crap i average about 16 when there is traffic maybe lower sometimes i dropped to around 14.5 but when i drive highway it boots up to around 18 19 depends how aggressive i drive have. half of classes i go and leave around rush hour the other half i get nice empty roads. so it all depends on your driving conditions.
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10-01-2013, 08:59 PM	#50
kewlguy210 Private First Class 6 Rep 99 Posts Drives: 06 330xi Join Date: Feb 2013 Location: glassboro, nj iTrader: (1)	I got a E90 330xi and I'm getting 24-25 mpg. This is mix of 70/30 hwy and city.
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10-02-2013, 12:59 AM	#51
Kirkies328 Banned 25 Rep 129 Posts Drives: White 328i with black rims Join Date: Jul 2013 Location: Laguna niguel iTrader: (0)	The worst ive ever got was 168 miles. Which is 11 a gallon. The best ive ever gotten was 255 and that was from san diego to La. I get shit mileage
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10-02-2013, 09:07 AM	#52
Ludey849 New Member 1 Rep 9 Posts Drives: 325i 06' Join Date: Sep 2013 Location: Miami iTrader: (0)	Get new Sparkplugs and clean your maf sensor.
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