What MPG are you getting??

[JoeyBimmer05]

I recently purchased a 2004 330i zhp from a current zhpMafia member and the previous work he had done to the car was
-100 dollar headers from ebay
- exhaust pipping
- ActiveAutowerke muffler
- removed resonator

On the highway it seemed to get good gas mileage since i drove it back home on a 4 hour trip, but once i refilled the tank and used it here in the city i was getting about 17mpg. I got 290 miles to the tank. Ive owned a zhp a while back and i remember getting better miles per gallon then. Im wondering What can make my MPG's drop so dramatically? If the headers aren't installed properly do you think that can be effecting my MPG's?

Ive been trying to drive very conservatively and on this new tank i filled. I'm already down a quarter tank and I've only driven 75 miles. Does anyone have any ideas to why? What MPG's are you all getting?

[JoeyBimmer05]

Correction***

Previous owner had Vibrant Performance Streetpower Muffler and the second resonator was removed.

[anandoc]

Correction***

Previous owner had Vibrant Performance Streetpower Muffler and the second resonator was removed.

I think if you get 290 miles (466 KMs) to a tank, thats not too bad. I personally get about 430 KMs (267 miles) on a tank, while driving around in the city (Toronto traffic is pretty bad too). Highway is a different story - I usually get around 7.6 L/100 KM (30 MPG) so maybe around 700 KMs on a tank.

I too have the Vibrant street performance exhaust installed but I did not notice any change in MPGs after the install.

[az3579]

I recently purchased a 2004 330i zhp from a current zhpMafia member and the previous work he had done to the car was
-100 dollar headers from ebay
- exhaust pipping
- ActiveAutowerke muffler
- removed resonator

On the highway it seemed to get good gas mileage since i drove it back home on a 4 hour trip, but once i refilled the tank and used it here in the city i was getting about 17mpg. I got 290 miles to the tank. Ive owned a zhp a while back and i remember getting better miles per gallon then. Im wondering What can make my MPG's drop so dramatically? If the headers aren't installed properly do you think that can be effecting my MPG's?

Ive been trying to drive very conservatively and on this new tank i filled. I'm already down a quarter tank and I've only driven 75 miles. Does anyone have any ideas to why? What MPG's are you all getting?

I wouldn't read too much into your mpg's if you're only driving in the city. It's the worst kind of driving you can do for fuel efficiency. 17 sounds on point to me.

[BMWCurves]

City driving is highly variable. When I lived in Philadelphia with my old 330Ci, I could manage 21-22 mpg in the city because it's mostly flat and I drove at times when traffic wasn't bad. When I moved back to Portland which is much more hilly and I can get stuck in traffic, I can get as low as 17, but I struggle to hit 20 mpg with city driving.

[johnrando]

We actually have a mileage thread but hard to find it on tapatalk. With a vert and mods I get 18 city, much better on highway.

Sent from my SM-G935V using Tapatalk

[fw_fw]

Best place to check mileage is at fuelly.com. I use their app to track mileage on my cars and you can easily find what others are getting on their cars of all makes & models.

[3ZHPGUY]

This is a very old post with my milage log at that time, that has calculated milage for every tank. I'm still doing this @ 150k and haven't missed a tank. May update in the next few weeks.

http://www.zhpmafia.com/forums/showt...and-Mod-Ledger


Sent from my iPhone using Tapatalk

[JoeyBimmer05]

Thanks for the feedback guys. Yeah I'm going to see what i average after i finish his full tank and refill up next time. This is only my second full tank in the city driving. at 105k miles on the car it still driving smooth.

[Simmsled]

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