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Has anyone tried anything similar with an MB?

173mp/g diesel? Yeah right. Going downhill, with a tail wind and a couple Clydesdale's hooked up maybe.

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Codifex
1981 240D ChinaBlue (Got her running with a donor engine.)
1983 300DTurbo w/sunroof.
1984 300TD manual sunroof. (Electrical Gremlins)

Curious as to what the diesel Mercedes hypermilers are getting in their vehicles. Has anyone built a special purpose high mpg diesel Mercedes vehicle?

The mention of the Honda example was included to be a catalyst for discussion. Thanks

VW has made a 1 cylinder engine, 2 seater car that gets 280mpg.
Volkswagen to Make Limited Edition of 1-Liter Car (282 MPG!) in 2010 : TreeHugger

It can be done, but the car ain't gonna be SUV sized like all us Americans like.

When I was running veggie oil, I once got 175mpg on the diesel fuel I paid for, does that count.

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I would say the mb diesels do not necessarily lend themselves to super high mileage here in the states...we don't have a 4cyl from them. If I were to buy or build a car based strictly on economy id get the vw tdi...also the new skyactiv mazda diesels coming soon have a lot of hype.

As far as "hypermiling" I've noticed that few members on here do so, and then when mpg figures come back they are shot down...been there and done that. Some modifications that I've seen include replacing the rear end for lower gearing for highway cruising though, and some tweaking of the fuel delivery (I.e.) alda

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

I should mention I consistently get over 30mpg in my 300e and iirc hit 34 in my 300sd but I'd have to double check that one...I know I've hit 33 before

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

Link isn't working now.

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Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22

'84 - '86 2.2 liter 190D is a 4 cylinder to go along with the 240D 4 cylinder.

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You can't always get what you want, but if you try sometime you just might find you get what you need.

50 mpg!

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Mac
2002 e320 4matic estate│1985 300d│1980 300td
Previous: 1979 & 1982 & 1983 300sd │ 1982 240d

“Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22

Yes, I meant new models, sorry I should have been more clear. Rumor is that MB will bring a 4cyl to the US for 2013 but I believe it still remains a rumor. Newer diesels are more efficient and better adapted to our current fluid technology and roads. Our Jetta TDI gets between 50-55mpg highway and that is more powerful, about the same size and weight (marginally lighter) than the w123 and 190D. By saying all this I mean that our old MB engines aren't great at hypermiling or for super high mpgs, if that is a priority. However the low initial cost and relatively low maintenance means a great value even if you're only getting 25-30mpg....it would take a long time to make the difference between the price of a Jetta TDI and a w123 for example...just depends on priorities really.

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

That's after their million mile break in period

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

Youve hit 34 mpg in an SD? The best I can get is 24 but I mostly get about 20.

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual

I have to double check on 34, I know I've hit 33. My car/logs are not with me at the moment. That is all highway driving, no city/traffic. Around town I would get about 25-28. I know I get over 30 on my highway trips unless I hit a ton of traffic (same goes for the 300E). I regularly exceed EPA estimates on all the cars I have ever owned and driven just through having a light foot and anticipating stopping/accelerating. You could call my technique hypermiling but if you were behind me I doubt you would notice it.

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

Hmmm. If I could get 26 on a regular basis that would be awesome. I would never drive the mazda.

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1984 300SD Orient Red/ Palomino
1989 560SEC
2016 Mazda 6 6 speed manual
1995 Ford F-150 reg cab 4.9 5speed manual

I have on several occasions got over 35 mpg
33 regularly on the highway, city is way down though and some modifications.
29.56 combined.

Over 95% of the EPA

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1999 Mercedes E300TD daily driver sold at 238K miles 106K miles were mine, rust worm got it :-(
2006 Mercedes CDI new daily driver! 56,000 miles May 2016 now 85,625 Apr 2018 and Apr 2019 101,000 miles Apr 2020 109,875. March 2024 135,250, Dec 2024 145,000 miles