What MPG are you getting??

[ELCID86]

Can't stress enough the ocean of difference between a Steptronic and manual in regards to mileage.
My manual will get 31mpg on the highway all day everyday at 70mph.
My Steptronic gets about 26mpg on the highway at 70mph.
Around town and highway mix...
manual gets 25ish
Steptronic gets 21ish

Yep. Though I don't get quite that with the MT in town. And I usually get 28-29 hwy in my high mileage variant.

[Simmsled]

Granted... we don't have hills here. Nothing but flat, unfortunately.

[Dave1027]

Since you have cheap headers, you might consider the O2 sensors may not be working properly if at all. I average 24.7 mpg with 50/50 city/hwy.

[JoeyBimmer05]

Since you have cheap headers, you might consider the O2 sensors may not be working properly if at all. I average 24.7 mpg with 50/50 city/hwy.

The guy who installed the cheap headers before i bought it from him told me that the O2 sensors fit perfectly and it never gave him a check engine light. He also mentions that mass airflow sensor gave him a check engine at one point but he replaced some thing with is intake seal or something and it fixed that problem. Im not sure if anything has anything to do with the lower mileage.

[TigerTater]

I have headers and resonators. Step trans...average 19-21 mixed driving. Def down since headers installed...but I don't mind. I love the power they provide ...makes up for the sluggish AT...

[GotZHP]

My average will go between 22 to 24mpgs. I am at 24 on the dot right now because I have backed off on the revs recently. I live in Orange County and have to drive by LA twice a week, so my car will see the extremes on the highway. I either will be driving at peak rush hour and will be stuck in crawling traffic, or I drive at the off hours (12am-4am) and will be doing 80 to 90mph. While stuck in traffic I see ~15 miles per gallon, even when just trying to roll along in 1st or 2nd gear. While blasting the highway at 80, I will see over 30 as long as the road stay relatively flat. Mileage does suffer some once I start cruising around 90+.

On a good week, and when I behave and follow the posted speed limit, I will see 400 miles per tank. If I granny the car I'll squeeze out an extra 20 miles for 420 miles to the tank. Some weeks, I will see 300 miles per tank.

6sp MT, 124,000 miles on the clock.

[dpark]

I drive city (60%) and hwy (40%) and get 23.5mpg consistently. Hwy only I get 29+ easy. Don't drive 100% city ever so can answer that. But it would prob be under 20mpg. 330i with 6mt.


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[RedAtom]

I have only had mine for a month, mileage is terrible with San Francisco traffic and hills.

Averaging 15 mpg's, steptronic.

[Vas]

100% city on the last tank. 380 miles and got 23.4 mpg.

[holyc0w]

I'm currently doing 100% city (suburb) at 21.7 mpg. It's been going up slowly towards 22 from 21, since I'm missing most of the traffic with the work hours.