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Mercedes-Benz E-Class Diesels

570 messages,  Last post on Sep 06, 2009 at 6:25 PM

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What is this discussion about? Mercedes-Benz E-Class, Biodiesel, Diesel, Sedan

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#31 of 570 Don't use biodiesel , at least yet by rikk Nov 14, 2004 (6:09 am)
Replying to: gagrice (Aug 23, 2004 7:28 am) I am a senior mechanical engineer at a major diesel engine manufacturer in Illinois, you can guess, but DON'T put any fuel into that engine that is not approved by the manufacturer. Forget what the dealer says since it is the manufacturer that pays the warranty claims to the dealer. So, as long as it is under warranty at least follow the owners manual to the letter. Replies to this message: gagrice (Nov 14, 2004 7:32 am)
#32 of 570 Re: Don't use biodiesel , at least yet [rikk] by gagrice Nov 14, 2004 (7:32 am)
Replying to: rikk (Nov 14, 2004 6:09 am) Is BP ECD-1 acceptable for modeern diesel engines? I know in Hawaii they made a big deal of Willie Nelson buying a new E320 CDI that runs on B100 biodiesel.
#33 of 570 Good news for those that live in less restrictive states by gagrice Nov 27, 2004 (3:19 pm)
Mercedes-Benz has successfully reinforced its position in the United States -- its second-largest sales market -- with a very appealing diesel model, the E320 CDI. In the five months since the vehicle was introduced, it has reached its 2004 sales target of 3,000 units. This spectacular market launch also represents a fabulous comeback for diesel technology in North America. Mercedes-Benz has been offering diesel-powered vehicles in the United States since the 1960s, selling more than 320,000 vehicles, mostly E-Class and S-Class models. In the 1980s, about 80 percent of the vehicles sold in the U.S. had diesel engines.   http://www.aiada.org/article.asp?id=22693
#34 of 570 E320 CDI Fuel Mileage by skou1298 Dec 12, 2004 (8:00 am)
I own a 2005 E320 CDI and so far I'm underwhelmed by the fuel mileage I'm getting. Took delivering in mid-September 2004 and have put about 3,500 miles on the vehicle. Generally I'm getting around 22 city and 33 highway. No where close to the advertised 27/37. Per the trip computer my avg. speeds are about 22 mph city and 65 mph highway. Tire pressure has been maintained at the manufacturers recommended 32 psi. Allegedly there's a break-in period for diesels when optimum mileage is reached. Haven't seen any improvement yet. Does anybody know how long this break-in period is? Previous posts have noted much better mileage than me. Do I have a lemon? I'm keeping good records for ammo w/ my dealer if things don't improve. Other than the mileage issue I absolutely love this car. Replies to this message: shipo (Dec 12, 2004 9:08 am) tomotomo (Dec 14, 2004 5:38 am) txecdi (Feb 26, 2005 4:31 pm) au1114 (Oct 02, 2005 10:39 am)
#35 of 570 Re: E320 CDI Fuel Mileage [skou1298] by shipo Dec 12, 2004 (9:08 am)
Replying to: skou1298 (Dec 12, 2004 8:00 am) While I have never driven a diesel car, I have driven MANY German cars, including many MB cars during my 2.5 year stint with MB-USA in the mid 1990s. One comment I can make is that their highway mileage seems to improve with both the number of miles on the clock (at least 10,000) as well as the speed at which those miles are driven. Said another way, 65 mph sounds too low for optimal mileage. My 530i easily exceeds the EPA numbers (by over 3 mpg), however, I have to maintain speeds north of 75 to achieve that.   Regarding your city mileage, with an average speed of 22, your 22 mpg does not sound too out of line to me. It will be interesting to hear what other E320CDI owners think about this.   Best Regards, Shipo
#36 of 570 Re: E320 CDI Fuel Mileage [skou1298] by tomotomo Dec 14, 2004 (5:38 am)
Replying to: skou1298 (Dec 12, 2004 8:00 am) I own a 2005 E320 CDI and now have 4313 miles and have used a total 152.12 gallons of diesel for an average of 28.35 mpg of mostly city driving. The mpg has varied from 21.74 to 35.5, the highest being mostly highway driving at about 70 mph. The lowest being almost all city driving here in Houston, Texas. No problems yet.
#37 of 570 by dudleyr Dec 14, 2004 (8:13 am)
Faster speed = lower mileage. A 530i will use less fuel going 60 mph than 75.   On the benz - remember that true highway mileage includes no sidetrips in the city. They will bring down you average very quickly. Fill up, drive 300 miles at 65 on the freeway, and you will get the EPA numbers or better. Replies to this message: tomotomo (Dec 14, 2004 2:26 pm) shipo (Dec 14, 2004 3:18 pm)
#38 of 570 Re: [dudleyr] by tomotomo Dec 14, 2004 (2:26 pm)
Replying to: dudleyr (Dec 14, 2004 8:13 am) I live in Houston & frequently drive to Dallas, Texas which is about 250 miles. I will try your suggestion but I don't think I will ever get the EPA estimated 37 mpg! It is better than my previous E320 with a gasoline engine but so far it has never been as high as the EPA estimated 27/37 mpg. I hope it improves as I drive more miles but?
#39 of 570 Re: [dudleyr] by shipo Dec 14, 2004 (3:18 pm)
Replying to: dudleyr (Dec 14, 2004 8:13 am) Sorry, but that is definitely not my experience.   The sweet spot for mileage on my 530i 5-Speed is somewhere between 72 and 77 mph. I've plotted the mileage of every one of the dozens of NYC/New England runs that I've done over the last seven years (going back to my 1995 Passat GLX 5-Speed and my 1999 328i 5-Speed days), and in every case the best mileage numbers have always been somewhere north of 70.   True, there is more wind resistance at the higher speeds, however, to offset that the engine (which was designed to be efficient at WAY higher speeds than we routinely see here in the U.S.) is running more efficiently. In fact, while I was in Europe (I took delivery of my 530i in Munich), I noted 24 mpg at about 120. Not too shabby.   Best Regards, Shipo
#40 of 570 by pat HOST Feb 03, 2005 (6:18 am)
This discussion automatically closed itself after a period of inactivity. Reopening by request ...   Enjoy!

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