3.42 HW Mileage

[Brendan Hearn]

What do you guys with a 3.8L A4 get on the highway (65-85mph i guess). I have a 3.08 end right now and want to swap to 3.42 but am not sure about the hw mileage. How about the rpms around 75, thats when mine start to shoot up around the 3k range. Any sugesstions???

[Patrick Javert]

I get 30 mpg. it revs around 2400-2800 depending on if i am sitting behind a few semi's or if I'm going 90.

[Bass482]

I get between 27 and 29 on the highway depending on how fast i'm traveling. My rpms are in the 2400 range at 75.

You're around 3000 rpms at 75 with 308's? That seems kinda high...Shouldn't it be around 2000/2200?

Do you keep it in overdrive? or drive in "3" all the time?

[ May 14, 2002: Message edited by: Bass482 ]</p>

[Brendan Hearn]

I keep it in overdrive on the highway, around 65 its 2,300 rpm but once i hit 70 it starts to climb pretty fast but 70 at 2,000 rpm i dont think would be possible in my car, at least i havent experianced it.

[Silver97Camaro]

Hey that does sound a little high at 75 with 3.08's. I mean at 80mph I'm only at like 2500rpm if I remember right. I do know that at 70 I'm at 2100-2200rpm.

[John_D.]

In OD with my Y87, I'm turning 1000 rpms per 30mph. So 60mph is 2000, 90mph is 3000. I suppose 120mph would be 4000, if I could get it there in OD and get around the speed limiter!

Haven't checked the mpg in a while. Have 74000 total miles on it. Last time I checked, it was about 29mpg highway.

[99Camaro99]

I get about 28mpg. I went from where I live to Universal Studios (about 230mi) on a 1/2 tank of gas doing 85MPH (2400-2500RPMs). Hope that helps

[Brendan Hearn]

So what could cause my car to rev to high on the HW? I know that its in OD b/c when im maintaining a certain speed (after accelerating) i usually can feel the car shift into OD. Two people owned the car b4 me and havent done any mods to it so what the frick?