2000 ss a4

Reply Subscribe

Thread Tools

Search this Thread

Jul 11, 2011 | 08:51 AM

Grudge Night

Thread Starter

Teching In

Joined: Jul 2011

Posts: 16

Likes: 0

2000 ss a4

Hey guys how much will adding 3.73s to my rear affect gas mileage, i need some advice, i have never done it before so i just want to get a feel for what other peoples experiences were with it. It is bone stock. I just want to get a better launch but i wanna figure out how many mpgs im going to loose, i get like 23 highway right now. Thanks guys

Last edited by Grudge Night; Jul 11, 2011 at 08:52 AM. Reason: mispelled feel like feal

Jul 11, 2011 | 10:29 AM

Mike Morris

TECH Fanatic

iTrader: (55)

Joined: Mar 2010

Posts: 1,659

Likes: 92

From: Md/PA/FL

What gears are in the car now?

Jul 11, 2011 | 05:29 PM

farmington

TECH Fanatic

iTrader: (14)

Joined: Jun 2010

Posts: 1,807

Likes: 13

From: Little River SC

I went from 2.74 to 3.73 gears and probably only lost 1 mpg (A4). A4 or M6.

Jul 11, 2011 | 07:21 PM

FirstYrLS1Z

TECH Veteran

iTrader: (4)

Joined: Aug 2004

Posts: 4,219

Likes: 147

From: Euclid,Ohio

being an SS,you probably have 3.23s'.
guessing 3.23s' to 3.73s' will drop your mpg by 1.5,23 to about 21.5.
MPG is always 'right foot' and speed dependent.
with my OEM 3.23s',I got 24.5 on 7 trips to florida,with the 4.56s' for 4 identical trips I'm getting 21.5.