Mods for mileage??
Thread Starter
Member
Joined: May 2019
Posts: 159
Likes: 21
01 E55
here's what worked for me - i took my car drag racing and temporarily lost the urge to 'feel the power'. on the 300 mile road trip i made the day after racing i drove the car like a prius and managed 22mpg - easily 2mpg better than i had ever gotten before. i don't see my car ever getting any better than that.
*i took this from the trip computer...is that generally accurate? i haven't tracked mileage manually
*i took this from the trip computer...is that generally accurate? i haven't tracked mileage manually
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Joined: Sep 2014
Posts: 3,647
Likes: 818
From: Worldwide
2007 Mercedes E63 AMG
strict freeway driving with my E63 without traffic...at 75-85mph i'm logging 19-21mpg
if i drive at 65-70mph, without traffic i see 22-24mpg
if i drove only at 65mph, i'm sure i could see 24-25mpg
mixed driving i'm at 14-19mpg
the problem with California is the grade changes consistently so it is very difficult to get uber good MPG as seen by others in flatter states. also going with 10mm wider tires all around dropped my MPG about 1.5 MPG.
if i drive at 65-70mph, without traffic i see 22-24mpg
if i drove only at 65mph, i'm sure i could see 24-25mpg
mixed driving i'm at 14-19mpg
the problem with California is the grade changes consistently so it is very difficult to get uber good MPG as seen by others in flatter states. also going with 10mm wider tires all around dropped my MPG about 1.5 MPG.
Last edited by hachiroku; Aug 8, 2019 at 04:30 PM.
Senior Member
Joined: Nov 2018
Posts: 335
Likes: 54
CLS55 AMG
Log the mileage and MPG on from the "After Reset" menu
Log the odometer
Reset both the "After Reset" and "After Start" menus
Fill up tank
Record how many gallons it took to fill it up
Calculate MPG using the mileage from the recorded "After Reset" menu
Calculate MPG using the mileage calculated from subtracting the previous odometer reading from the current odometer reading
Yea its kind of OCD but I like having data on my cars, it helps to establish a performance baseline so that if things start to deviate I've got records and logs of when things started to go wrong.
Senior Member
Joined: Nov 2018
Posts: 335
Likes: 54
CLS55 AMG
MBWorld Fanatic!
Joined: Dec 2008
Posts: 4,411
Likes: 69
From: Socal, Chino
E55 2006 / CLS55 / S450 / Jag XKR2011
When you did the headers and tune, did you also do injectors? If you did do injectors then your trip computers are no longer accurate. I found that even the trip computers: "After Reset" and "After Start" were not accurate and often 1-2 mpg off from hand calculating off the odometer. I've been tracking every single fuel up with the following process:
Log the mileage and MPG on from the "After Reset" menu
Log the odometer
Reset both the "After Reset" and "After Start" menus
Fill up tank
Record how many gallons it took to fill it up
Calculate MPG using the mileage from the recorded "After Reset" menu
Calculate MPG using the mileage calculated from subtracting the previous odometer reading from the current odometer reading
Yea its kind of OCD but I like having data on my cars, it helps to establish a performance baseline so that if things start to deviate I've got records and logs of when things started to go wrong.
Log the mileage and MPG on from the "After Reset" menu
Log the odometer
Reset both the "After Reset" and "After Start" menus
Fill up tank
Record how many gallons it took to fill it up
Calculate MPG using the mileage from the recorded "After Reset" menu
Calculate MPG using the mileage calculated from subtracting the previous odometer reading from the current odometer reading
Yea its kind of OCD but I like having data on my cars, it helps to establish a performance baseline so that if things start to deviate I've got records and logs of when things started to go wrong.
Thread Starter
Member
Joined: May 2019
Posts: 159
Likes: 21
01 E55
I'm about to fill up, I *think* I'm at like 307 miles, and I have 1/4 tank left. I;m reasonably sure I can get to 360. But I can still do the same math.. filling up now. lol
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Thread Starter
Member
Joined: May 2019
Posts: 159
Likes: 21
01 E55
I went 327.9 miles and was able to stuff 17.55 gallons in the tank.
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Joined: May 2005
Posts: 1,276
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1991 964 Turbo, 2002 Black E55, 2002 Black E55 " The Beast"- 2014 E63s
When I owned mine an '06 back in 2010, I never did more than 12/13 MPG over a period of 3 years of my ownership. Was it hard on the wallet yes. did it give me the biggest grin every time I drove it, you bet ... MPG never bothered me but the tires sure did
