This guy on CL, shows a 1992 300SD, saying it gets 28city/40hwy. 6 cylinder

My guess is, this guy's lying. A lot. My '91 300d gives 36 hwy, and the SD is a bigger car, bigger engine.

I'm guessing being towed, maybe he gets 40 mpg. The EPA figures shown on the internet aren't right. For my car I think it shows 32 mpg, when I get more. It shows 18/22 for the 300sd.

jeff

1992 300SD

1991 300D 2.5

The new "updated" MPG ratings are for people who drive like...well, fuel's cheap! If you drive reasonably, with a light foot, anticipate stops, etc, you'll be able to achieve better than the rating (quite easily). 28 city / 40 highway sure sounds like he's just added 7 or 8 MPG on to what's actually possible. I probably couldn't get over 35 MPG in my stock '87, and it's a smaller car...

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1982 240D, sold 9/17/2008
1987 300D TurboW124.133 - 603.960, 722.317 - Smoke Silver Metallic / Medium Red (702/177), acquired 8/15/2009
262,715 and counting

You shouldn't even be looking at a W-140 with a diesel. The risk with the 603.971 engine just isn't worth the price..........whatever the price.

Add to that the electronics and HVAC gems in the W140 body and you have a real winner

Unless you have documentation that the engine was replaced the price of a 3.5l diesel should be very low.

-Jason

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

My experience is 20-22 around town, ac on, short trips (3-5 miles). I have seen 25-27+/- on highway trips, 70 mph, with AC. You might hit 30 with no ac and driving slower.

There is an instantaneous mileage guage on the dash that will swing up and down depending if you are coasting. That will hit 40+ if you coast on the highway for a moment or two.

He is lying about 30%. So, based on that, ask him what else is he lying about? I'm thinking it is his asking price.

Make him this deal. You will pay him the percentage of his asking price equal to the real mpg percent of his stated mpg. You fill the tank, he pays. You drive, you fill again, he pays again. You do the math. If the car gets 40 mpg, pay him his price, you'll be happy. If it gets 23 mpg, pay him your price, you'll be happy.

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Greg
2012 S350 BlueTEC 4Matic
2007 ML 320 CDI
2007 Leisure Travel Serenity
2006 Sprinter 432k
2005 E320 CDI
1998 SLK230 (teal)
1998 SLK230 (silver)
1996 E300D 99k, 30k on WVO
Previous:
1983 240D, on WVO
1982 300D, on WVO
1983 300CD, on WVO
1986 300SDL 237k, 25k on WVO (Deerslayer)
1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix
1983 380 SEC w/603 diesel, 8k on WVO
1996 E300D 351k, 177k on WVO

I have to disagree: after awhile they ALL get about 40-50 miles per gallon.
Of oil........

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Jimmy L.
'05 Acura TL 6MT
2001 ML430 My Spare

Gone:
'95 E300 188K "Batmobile" Texas Unfriendly Black
'85 300TD 235K "The Wagon" Texas Friendly White
'80 240D 154K "China" Scar engine installed
'81 300TD 240K "Smash"
'80 240D 230K "The Squash"
'81 240D 293K"Scar" Rear ended harder than Elton John