--W124's MPG Thread--
MBWorld Fanatic!
Joined: Dec 2006
Posts: 1,907
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From: So Cal
92 500e, 95 E34 525I Touring
Another all highway trip today.
I filled up before and averaged about 16.7 MPG.
Filled up when I got back after a 110.4 mile trip with about 4.248 gallons.
Averaged about 25.99 MPG. Less this time because I kinda raced another 350z. haha.
I filled up before and averaged about 16.7 MPG.
Filled up when I got back after a 110.4 mile trip with about 4.248 gallons.
Averaged about 25.99 MPG. Less this time because I kinda raced another 350z. haha.
MBWorld Fanatic!
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i drove from victorville ca to north hills ca. used 3 odd gallons. circa 30mpg.
it is mostly downhill though.
BTW
not smart to coast with the engine off. 2 reasons;
a) you get reduced braking. no vacuum assist from the engine.
b) the transmission is not getting lubricated, but its output shaft is being turned. the transmission self lubricates in a manual. the movement of the gears splashes the oil and thats sufficient.
in an auto there's a pump that circulates oil. its engine driven. obviously, engine off, no transmission lubrication. this is one of the reasons why towing is recommended with a flat bed.
it is mostly downhill though.
I coasted down a long hill with my motor off and then I kept going by drafting behind a big truck until he got mad about how close I was following. I realized I got incredible mileage when I refilled my car after the trip down the big hill and then drafting that truck. It was like 50+mpg!!! I don't need a hybrid or a diesel!!! 
not smart to coast with the engine off. 2 reasons;
a) you get reduced braking. no vacuum assist from the engine.
b) the transmission is not getting lubricated, but its output shaft is being turned. the transmission self lubricates in a manual. the movement of the gears splashes the oil and thats sufficient.
in an auto there's a pump that circulates oil. its engine driven. obviously, engine off, no transmission lubrication. this is one of the reasons why towing is recommended with a flat bed.
Member
Joined: Sep 2007
Posts: 140
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1989 190E 3.0L 5speed
I filled up a few days ago and gave "plus" a try (89 rather than usual 91) to save some money. When you talk gas prices and say "This is ten cents a gallon less" it sound pretty good. When you see the numbers for putting in 12 gallons you save $1.20 - needless to say I felt pretty stupid and that is the last time I use 89 as gas prices are dropping around here. On the up side just before that fillup I got 22 mpg with some hard driving in there too.
Thread Starter
MBWorld Fanatic!
Joined: May 2007
Posts: 6,406
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From: Clearwater Beach, Florida
2016 Cls63s AMG
I filled up a few days ago and gave "plus" a try (89 rather than usual 91) to save some money. When you talk gas prices and say "This is ten cents a gallon less" it sound pretty good. When you see the numbers for putting in 12 gallons you save $1.20 - needless to say I felt pretty stupid and that is the last time I use 89 as gas prices are dropping around here. On the up side just before that fillup I got 22 mpg with some hard driving in there too.
MBWorld Fanatic!
Joined: Dec 2003
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i've been using regular in my car for four years. i drive the car hard about once a month, take a long drive (2 hours minimum) at least once a month. whatever carbon deposits are developing are being burnt off.
Newbie
Joined: Feb 2008
Posts: 1
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1995 E300 D
My Daily Driver 1995 E300D 224,000 miles.
Currently @$3.20 per gallon here in Atlanta.
I drive back and forth across Atlanta 5 days and to get groceries etc. weekends.
26 miles one way to work. so 260 miles/week highway(some rush hour -some 80 mph)
probably 30 miles doing errands each weekend.
I go 2 weeks using 21 gal of a 23 gal tank.
Between 27 and 30 mpg depending on AC or no and good traffic or no.
With no or little stop and go Ill get 32 mpg and over 700 miles on the tank.
All that and no car payment.
I love my diesel.
Risx
Currently @$3.20 per gallon here in Atlanta.
I drive back and forth across Atlanta 5 days and to get groceries etc. weekends.
26 miles one way to work. so 260 miles/week highway(some rush hour -some 80 mph)
probably 30 miles doing errands each weekend.
I go 2 weeks using 21 gal of a 23 gal tank.
Between 27 and 30 mpg depending on AC or no and good traffic or no.
With no or little stop and go Ill get 32 mpg and over 700 miles on the tank.
All that and no car payment.
I love my diesel.
Risx
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From: Southeast PA
2010 VW Golf TDI
Thread Starter
MBWorld Fanatic!
Joined: May 2007
Posts: 6,406
Likes: 140
From: Clearwater Beach, Florida
2016 Cls63s AMG
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just drove from burbank, ca to anthem, arizona, 405 miles. i had a 1/4 tank when i arrived. filled up when i got here. 13 and a fraction gallons. 31MPG
thirty. one. miles. per. gallon.
i am so stoked.
but i was driving like a grandma, really slow uphill, getting passed by the big rigs, getting as low as 40mph. averaging 60- 65 where it was flat, maybe 70 on the downhills.
my EPA sticker said 23mpg freeway when the car was originally purchased.
thirty. one. miles. per. gallon.
i am so stoked.
but i was driving like a grandma, really slow uphill, getting passed by the big rigs, getting as low as 40mph. averaging 60- 65 where it was flat, maybe 70 on the downhills.
my EPA sticker said 23mpg freeway when the car was originally purchased.
MBWorld Fanatic!
Joined: Mar 2007
Posts: 1,321
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From: STL
95 e320...sold the rest
Whoever says using regular will hurt the engine is an idiot. No arguing. My MB mechanic who only works on w124s and w126s said it's fine to use whatever you like in it. It will not hurt the valves, or anything to that extent. Like Neanderthal said...as long as you drive a little hard every once in a while, you WILL be fine. And if a problem occurs, it's probably not because of the grade of gasoline you're using.
MBWorld Fanatic!
Joined: Apr 2007
Posts: 2,381
Likes: 29
E
You guys get such good MPG.
Just filled up yesterday: 162miles / 10.4 gallons = 15.9mpg
Thats with 60% freeway doing 65-70mph.
I REALLY hope my misfire causing a huge drop in mpg....
To be honest, just because that mechanic says its ok, doesn't make it right.
Take a look through this thread:
http://mercedesshop.com/shopforum/sh...d.php?t=206607
Just filled up yesterday: 162miles / 10.4 gallons = 15.9mpg
Thats with 60% freeway doing 65-70mph.I REALLY hope my misfire causing a huge drop in mpg....
Whoever says using regular will hurt the engine is an idiot. No arguing. My MB mechanic who only works on w124s and w126s said it's fine to use whatever you like in it. It will not hurt the valves, or anything to that extent. Like Neanderthal said...as long as you drive a little hard every once in a while, you WILL be fine. And if a problem occurs, it's probably not because of the grade of gasoline you're using.
Take a look through this thread:
http://mercedesshop.com/shopforum/sh...d.php?t=206607
Last edited by ps2cho; Mar 15, 2008 at 02:03 PM.
MBWorld Fanatic!
Joined: Dec 2003
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how you drive is the biggest factor in fuel economy. driving like a grandma is better than driving like a teenager.
where you drive, city streets, canyons, hills, will have a much greater effect on decreasing your fuel economy. long freeway drives tend to be better. but of course if you are driving like you're on the autobahn, that goes out the window.
towing and hauling decrease fuel economy.
your cars state of maintenance. obviously if you've been slack, you arent going to get as good fuel economy as if you had been more methodical.
tire pressure can make a slight difference.
wagons and coupes will generally get worse fuel economy.
where you drive, city streets, canyons, hills, will have a much greater effect on decreasing your fuel economy. long freeway drives tend to be better. but of course if you are driving like you're on the autobahn, that goes out the window.
towing and hauling decrease fuel economy.
your cars state of maintenance. obviously if you've been slack, you arent going to get as good fuel economy as if you had been more methodical.
tire pressure can make a slight difference.
wagons and coupes will generally get worse fuel economy.
I gave that up the first time I got walked by a stock Civic CRX!
Senior Member
Joined: Jun 2003
Posts: 302
Likes: 1
From: Salem, OR
08 Lexus GS350 AWD. 08 Lexus RX350 AWD - wife's. 94 MBZ E320 - still have it.
I filled up a few days ago and gave "plus" a try (89 rather than usual 91) to save some money. When you talk gas prices and say "This is ten cents a gallon less" it sound pretty good. When you see the numbers for putting in 12 gallons you save $1.20 - needless to say I felt pretty stupid and that is the last time I use 89 as gas prices are dropping around here. On the up side just before that fillup I got 22 mpg with some hard driving in there too.
I average about 18MPG city and 25-26MPG freeway and just under 80MPH.
Newbie
Joined: Nov 2002
Posts: 5
Likes: 0
From: Cambria, California
93 400E
It is not surprising that the W124's get good mileage cruising at 80+
I am always amazed at my 400e cruising at 80+ on Interstate 5.
I consistantly average just over 30 mpg, I use 91 as the 400E has 11:1
compresssion ratio, I have never tried 87 or 89.
Combined milage is always 20+ mpg.
I am always amazed at my 400e cruising at 80+ on Interstate 5.
I consistantly average just over 30 mpg, I use 91 as the 400E has 11:1
compresssion ratio, I have never tried 87 or 89.
Combined milage is always 20+ mpg.
MBWorld Fanatic!
Joined: Dec 2003
Posts: 1,016
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just completed the return leg of the journey. 417 miles. 20.14 mpg
why the disparity.
1 it was windy was hell. seemingly the whole way here.
2 going there took 8 hours and some. i was stuck in los angeles traffic for 2 hours though. coming back took 5 1/2.
a) got a ticket for 30 over. thats gonna hurt.
b) avg 75 mph for the return leg.
another 1000 mile weekend for my car. thats about 20 weekends that ive done 1000 miles or more in my owner ship of this car. it doesnt fail to amaze me. 19 bloody years old.
hurrah for german engineering.
why the disparity.
1 it was windy was hell. seemingly the whole way here.
2 going there took 8 hours and some. i was stuck in los angeles traffic for 2 hours though. coming back took 5 1/2.
a) got a ticket for 30 over. thats gonna hurt.
b) avg 75 mph for the return leg.
another 1000 mile weekend for my car. thats about 20 weekends that ive done 1000 miles or more in my owner ship of this car. it doesnt fail to amaze me. 19 bloody years old.
hurrah for german engineering.
Super Member
Joined: Feb 2008
Posts: 844
Likes: 1
From: Orland Park, Illinois
1994 E320 (current)
just completed the return leg of the journey. 417 miles. 20.14 mpg
why the disparity.
1 it was windy was hell. seemingly the whole way here.
2 going there took 8 hours and some. i was stuck in los angeles traffic for 2 hours though. coming back took 5 1/2.
a) got a ticket for 30 over. thats gonna hurt.
b) avg 75 mph for the return leg.
another 1000 mile weekend for my car. thats about 20 weekends that ive done 1000 miles or more in my owner ship of this car. it doesnt fail to amaze me. 19 bloody years old.
hurrah for german engineering.
why the disparity.
1 it was windy was hell. seemingly the whole way here.
2 going there took 8 hours and some. i was stuck in los angeles traffic for 2 hours though. coming back took 5 1/2.
a) got a ticket for 30 over. thats gonna hurt.
b) avg 75 mph for the return leg.
another 1000 mile weekend for my car. thats about 20 weekends that ive done 1000 miles or more in my owner ship of this car. it doesnt fail to amaze me. 19 bloody years old.
hurrah for german engineering.
