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Old 03-07-2007, 10:02 PM
BodhiBenz1987's Avatar
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Join Date: Dec 2004
Location: East Coast
Posts: 2,991
1987 300D: about to do my calculations for the past 15 or so tanks, probably will have that done by the end of the week (takes forever to enter all those receipts into Excel). I think I'm getting about 24 mpg on the last two tanks, all city (well, more like suburbs and back roads in the country ... but lots of slowing, hills, start, stop) and stretches of highway that are highly congested. Have been using ULSD, but I don't think I can blame the drop on that. Usually don't do too well in this type of weather. In December/January when we were having milder weather, I was getting around 26.5 for the same driving patterns. I haven't taken a road trip in ages ... would love to see how it does out in the open. I can remember getting 31-32 on cruising road trips.
1987 300D, arctic white/palomino--314,000 miles
1978 240D 4-speed, Euro Delivery, light ivory/bamboo--369,000 miles
2005 Jeep Liberty CRD Limited, light khaki/slate--137,000 miles
2018 Chevy Cruze diesel, 6-speed manual, satin steel metallic/kalahari--3,700 miles
1995 S320, black/parchment--32,000 miles (Dad's car)
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Old 03-07-2007, 11:05 PM
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Join Date: Jun 2006
Location: Southeast
Posts: 1,540

I get about 28 city, 36 hwy.

1991 300d, 102k
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Old 03-07-2007, 11:09 PM
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Join Date: Nov 2006
Location: Ventura County, So Cal
Posts: 62
86 SDL getting 21 to 23 city and 25+ on the highway.

Last week was the first time I saw the ULSD sticker on the pump. We'll see if this tank is any different. Judging by the gauge after 300 miles, it seems consistent.

(86) 300 SDL
(00) GMC Yukon XL 4X4
(97) C5 Corvette
(02) BMW R1150GS Adventure
(00) KAW Nomad 1500 FI
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Old 03-07-2007, 11:14 PM
gatorblue92's Avatar
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Join Date: Jan 2006
Location: Delaware
Posts: 3,307
i get around 33... cant complain
1977 MB 240D 4 speed 144K - Nearly Perfect
1991 MB 300TE 5 Speed 274k - Back on the road!
2014 Honda CR-V 70k - Wife's DD
2015 Ford F150 2.7TT 45k - My DD

1979 MB 280E 90K - Sold
1983 MB 240D 238K - Scrapped
1984 MB 300D 347K? - Sold
1987 MB 300E 5 speed 258K - Scrapped
1993 MB 400E 130K - Sold
1995 MB E320 - Sold
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Old 03-07-2007, 11:19 PM
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Join Date: May 2003
Posts: 2,218
I experienced a loss of fuel economy shortly after the introduction to ULSD, too.

I had air leaks throughout the fuel system, return lines weeping, delivery valve seals, spin-on filter clogging twice. Mileage averaged about 18 - 20 mpg in the winter, and 24 mpg in the summer while my 350SD got its 3.0 liter transplant.

Replaced all the above and did an injection system purge. This winter, I'm averaging..........................about 27 mpg.
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Old 03-08-2007, 12:21 AM
Kuhlrover's Avatar
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Join Date: Mar 2007
Location: Washington
Posts: 122
I have almost 300K miles on the original engine and I get 29 mpg.

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Old 03-08-2007, 02:10 AM
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Join Date: Mar 2007
Location: Levittown PA just east of Philedelphia
Posts: 76
What car Kuhlrover. is it POSSIBLE for me to get 30mpg with my 76 300D ? what should I start to check to see whats keeping my economy low ?
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Old 03-08-2007, 03:10 AM
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Join Date: Aug 2006
Location: San Mateo, CA.
Posts: 263
I'm getting 2ompg city and 23 mpg on a very recent long trip to LA and back.
This is after a major maintenence tune up with valve adjustment was done. Car is running OK except one clogged fuel injector but I sense an engine rebuilt with in the next couple of years. I have options and time on my side.
It never ends!
1985 300D Turbo 181K Anthracite grey, "SOPHIA"
1984 300 SD Turbo(sold)
2004 Subaru Forester XT,Cayenne red.
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Old 03-08-2007, 07:17 AM
asantoni's Avatar
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Join Date: Jan 2007
Location: Orlando,FL
Posts: 19
I get 31 MPG no matter how I drive on my 92 300D 2.5 turbo. This mileage is with a bad #5 injector (compression blowing through injector body) and two pretty clogged nozzles. I'm looking forward to see if my mileage improves after I pick up the car from the diesel shop today.
92 300D 2.5T (225K miles)
05 Frontier CC (36k miles)
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Old 03-08-2007, 08:08 AM
POS's Avatar
POS POS is offline
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Join Date: May 2004
Location: Houston, Texas
Posts: 2,504
Driving my '95 E300D like a psycho I get 30mpg combined.
Driving my '84 280E cruising at 75mph I get 25mpg.
- Brian

1989 500SEL Euro
1966 250SE Cabriolet
1958 BMW Isetta 600
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Old 03-08-2007, 10:39 AM
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Join Date: Nov 2006
Location: FL
Posts: 507
Wow... I am very surprised. Really not bad for 4,000 lb cars (300D's)
I knew the newer diesels (after 85-86) got upwards of 40 MPG, but wanted to see how I compared to everyone....
85 300CD Turbo "Das Polluter" 230K sold for $3,000

98 BMW 323is
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Old 03-08-2007, 10:40 AM
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Join Date: Oct 2006
Location: Beachwood, NJ
Posts: 462
1987 300sdl, 322,600 miles. 2/18/07 Beachwood, NJ to Nokomis, FL via Rome, GA 1414 miles, 62.43 mph, 26.417 mpg. FL local driving, 25.15 mpg. 2/26/07 Nokoomis, FL to Beachwood, NJ 1184 miles, 67.65 mph, 25.193 mpg. 25-26 mpg during the past 6 months.
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Old 03-08-2007, 12:55 PM
muleears's Avatar
Old MB Driver
Join Date: May 2006
Location: Windsor, VA
Posts: 1,435
Highway 32, in town 28. Haven't checked since ulsd arrived.

'07 E320 Bluetec 133K my DD
'04 Jaguar XJ8 VDP, 34K
'10 Hyundai Accent 60K Grocery Getter
'02 VW Golf soon to be on the road again
'97 E300 Diesel Son's DD
'61 VERY tolerant wife

Hampton Roads, VA USA

Gone but not forgotten:
'67 250S 95K
'86 300SDL
'87 300D Turbo, 364K! R.I.P.
'98 E300 Turbodiesel, 213K
'02 S420, 164K
'01 Prius 138K
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Old 03-09-2007, 12:27 AM
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Join Date: Nov 2003
Location: lompoc ca
Posts: 26
The 92 300D gets about 35mpg, I drive like a granny on the highway, half the trip to work is 55, the rest is 65. The 95 300 gets about 32, driven by the same old duff.
51 willys M38
62 willys M38A1
79 chevy
92 300D
95 300D
96 vision recumbent
2004 Wrangler
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Old 03-09-2007, 12:58 AM
Boardmonger's Avatar
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Join Date: Apr 2005
Location: Cupertino, CA
Posts: 707
I still get an average of 22 mpg in the 83 300d with 85-90% of city driving. It does 26-28 on the highway.
-Zack K.

1983 300d Turbo (Daily Drive) -- 243,000 miles
1979 280ce AMG (Beginning extreme restoration) -- 141,410 miles
1979 Yamaha Chappy LB50 (Awating new points) -- 1411.6 miles

1981 300d Euro 4 speed -- 188,421 km -- SOLD
1979 300d Euro 4 speed (Sold to Brother) -- 257,000 miles

A Collection of w123 AMG Cars and Parts
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