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Old 05-08-2001, 04:22 PM
Registered User
Join Date: Dec 2000
Location: South Jersey
Posts: 7
Am only getting 28mpg on my 99 diesel. Figured I would get at least 30mpg, I got 34 on my 90 300D, but that had 5 cylinders I know. I have 22K on my (new to me 3 months ago) 99 diesel. What can I do if anything to improve my mpg?
South Jersey
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Old 05-08-2001, 05:22 PM
Registered User
Join Date: Jun 2000
Location: Plano, TX
Posts: 2,476
Well, you're in the neighborhood. I know the '98 diesel
was rated at 26 city/34 highway - you are in between
those two figures. I don't necessarily see a problem.

How do you use the car? Short trips, long trips, city,
highway, suburban? This all makes a difference.

Try using EC/economy mode on the climate control - that's
good for 1-2MPG.

I have a '98 turbodiesel. I see 25-30MPG in mixed suburban
use. Lower figure for lots of stop&go with the air
conditioner blasting, higher figure if I make a few trips
to the airport.

Road trips have netted 32-34MPG. Not up to spec, but I need
to note that I generally drive in the vicinity of 80MPH on
the open road. (No flames, I'm in Texas and things are way
far apart.)
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Old 05-08-2001, 05:24 PM
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Join Date: Jun 2000
Location: Saugus, CA USA
Posts: 1,974
I thought you were getting 99 mpg with your diesel.
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Old 05-09-2001, 06:20 AM
Johnson Chan
Posts: n/a

Thats what I thought too from the subject line.


I saw your post in last night/this morning. I made a reply there.
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Old 05-17-2001, 11:28 PM
Posts: n/a
re:99 E300TD mileage

Bought 1999 E300TD 11/98. I have gotten 31 mpg only once on trip from Texas to FL. Usually get max of 30 on Hwy and around 25 in city/freeway driving. Using a/c doesn't seem to affect mileage. Have 17,000 miles on it. Seems to run great. I have heard others get better, but most are 25-30 range.
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