mpg seems to have dropped

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Mar 30, 2007 | 02:55 AM

EarlSS

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From: Burkesville,Kentucky

mpg seems to have dropped

It has seemed to me like my mpg has dropped here lately so I checked my mpg tonight and i got 245 miles out of 13 gallons of gas. If my math is rite thats 18.8 miles per gallon which to me seems low. My car is a m6 with a slp flo pac and a lm exhaust and i've had them on for a while. Dureing this mpg test i drove a mixture of city and highway and only got on it like 2 or 3 times. Does it sound like my mpg is a little low to you guys?

Mar 30, 2007 | 04:45 AM

SStheBest

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From: Navarre, FL

actually that sounds almost right on the money since ur mixin the drivin between the highway and city, u have to be consiistent on the highway in order for u to gain the max

Mar 30, 2007 | 04:46 AM

SStheBest

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From: Navarre, FL

another thing to look at if ur still paranoid..check ur plugs, air filter, oil, etc. b/c all that will add up to max mpg

Mar 30, 2007 | 06:23 AM

1BAD01TA

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From: PORT ST LUCIE FL

Im with SStheBest just check everthing and see if it good.

Mar 30, 2007 | 07:48 AM

taintedmeat

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From: ATX

I wish I got that kind of mileage

Mar 30, 2007 | 09:51 AM

darom

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From: Bakersfield, CA

I am getting 16 mpg, at least some of you have access to 93 octane gas. In 'Kalifornia' it is only 91 with a bunch of add-ons like Techron and other bs.

Mar 30, 2007 | 10:00 AM

Trojan35

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Quote:

Originally Posted by darom

I am getting 16 mpg, at least some of you have access to 93 octane gas. In 'Kalifornia' it is only 91 with a bunch of add-ons like Techron and other bs.

Ditto, I get 15.7 mpg on an A4 with about 10% freeway. I used to get 22-25 if it was 80-100% freeway.

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Mar 30, 2007 | 10:45 AM

kaos_

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From: TX

bad O2 sensors will destroy your mpg. i seafoamed my car and that ended up clogging the O2s from all the carbon buildup that came out the exhaust. I replaced them and my mpg went up significantly.

Mar 30, 2007 | 10:53 AM

#10

EarlSS

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From: Burkesville,Kentucky

My car only has 33k miles on it. I hope my o2's haven't went bad. I've never seafoamed the car i'm sure that might help but i was worried about messin the o2's up.

Mar 30, 2007 | 11:11 AM

#11

The SSheriff

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From: The Plywood State

You'll know if an O2 goes bad if the car starts idling erratically and the service engine soon light comes on.

Mar 30, 2007 | 02:19 PM

#12

EarlSS

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From: Burkesville,Kentucky

The only time my car idles funny is when coasting at speeds of like 40 and above but when setting still it idles fine and my service engine light hasn't came on.

Mar 30, 2007 | 08:20 PM

#13

89Formulaws6

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From: Michigan

i got 16-18 before touching the car now i am getting 13 but its throwing a ton of ses lights at me lol needs to be tuned

Apr 1, 2007 | 01:21 AM

#14

DarkhorSe_SS

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From: Spurs City!!! SA, Tx

I'm curious about my mpg also...

I am about 200miles with 1/4 tank left. I haven't done a plug/wires swap so that's up next. I tend to shift like 2500-3000 so I am definitely killing mpg right now.

Apr 1, 2007 | 08:24 PM

#15

Rybo Flavin

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I find that the mpg for these cars is extremely sensitive to the type of driving you are doing.

This weekend I drove from South Bend, Indiana to Flint, Michigan, approximately 200 miles each way. I got over 25 mpg on the way to and back from Flint and kept my speed between 70-80 mph in 6th gear.

Now, in my day to day driving in stop-go traffic, 40 mph or slower, I never get over 15 mpg. I usually shift around 2000-2500 rpm.

So, as others have mentioned, you really need to do a long road trip to determine the true mpg IMO.