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Mercedes-Benz E-Class Diesels

patpat Posts: 10,421
Do you have one yet? What are your thoughts on this diesel entry to the MB line up? If you haven't yet seen this article yet, check out Edmunds First Drive via the Helpful links box on the left side of the page.

We've been talking about it in our general E-Class Sedans discussion, but I agree with a couple of requests. This vehicle deserves its own discussion.

Share your comments and opinions!!


  • tomotomotomotomo Posts: 57
    I replaced a 2001 E320 with a 2005 E320 CDI last Saturday. So far I have about 250 miles with no problems. I believe it drives a little better than my previous E320; however, there is not a lot of difference. The diesel engine seems just as quick as the gasoline engine. I suppose time will tell if the diesel engine is much more economical than the gasoline engine.
  • rwalker07rwalker07 Posts: 16
    Took a rather long trip.

    I thought the car handled extremely well, comparing it to the Acura TL and a Saab 9-5. The mileage i go t was about 35 mph all highway.

    the car is plenty powerful enough. I am not sure when I would need or want more. The torque is unreal.

    The car makes a slight ping at startup but it is not noticable when driving.

    So far, I really like the car. But I will probably trade it in if and when Acura has a hybrid RL model.

    One thing I am sure of, this CDI should hold its value extremely well as only 5,000 are coming to USA this year
  • carmaven18carmaven18 Posts: 21
    How does everyone like the E320 CDI? Any problems or especially good features, and is the milage satisfactory and is it worth the $50,000?
  • tomotomotomotomo Posts: 57
    I've only had my CDI for a little over one week and have driven it about 350 in city miles. It is getting about 26 mpg, but hopefully that will improve. So far no problems. As to the question "is it worth $50,000.?" that depends on each individual to answer. From a pure economical point of view, one could argue that no auto is worth $50,000. As for me I have no regrets concerning the cost.
  • lcd1lcd1 Posts: 147
    If the CDI is a reliable as a Lexus, I'd take a $55,000 plunge. As there is a limited number of CDI's in the U.S., is there really a best time to buy one? Thanks for any words of wisdom from Lexus and CDI owners.
  • aaunoaauno Posts: 1
    I'm in the same boat of thought, Lexus or E320 CDI. I have time since my current lease expires in 2005. I drive 20k miles per year and would like to buy my next car and keep it for 10 years.
  • gagricegagrice Pahrump, NevadaPosts: 31,432
    Makes me want one even more. It must be some fine automobile.
  • ezshift5ezshift5 West coastPosts: 858
    and IRS have come to terms......

    ...coming "to terms" in CA may take somewhat longer.........

    Good link,, ez......
  • mark156mark156 Posts: 2,006
    I read the article on Willie Nelson, can he switch back to regular diesel in his 320 CDI? Can he alternate between the different diesel fuels?

    2010 Land Rover LR4, 2013 Honda CR-V, 2009 Bentley GTC, 1990 MB 500SL, 2001 MB S500, 2007 Lincoln TC, 1964 RR Silver Cloud III, 1995 MB E320 Cab., 2015 Prevost Liberty Coach
  • gagricegagrice Pahrump, NevadaPosts: 31,432
    I talked to the fellow that owns Pacific Biodiesel on Maui. My interest is getting biodiesel on the Big Island. He told me you can mix it with any percentage you want. If you are in a cold climate you will need to mix it as biodiesel gels at a higher temperature than #2 diesel. If you mix with real high sulfur diesel you will get more smoke and pollution. I have not heard any rumblings that it makes any difference on warranty. I would think MB was involved in all the publicity surrounding the Willie Nelson purchase on Maui.
  • My wife bought this car to replace her 2000 C230 Sport. We absolutely love this car. Workmanship is great and we drove it all over this past weekend in DC traffic. Still averaged almost 26 MPG for over 300 miles. So far we can't believe how good this car is. Has anyone heard any rumors about what changes may have to be made to hoses and seals when the low sulfur diesel is introduced? When this happened in the marine industry many boat owners had to change hoses and seals. Not exactly the cheapest thing to do.
  • habitat1habitat1 Posts: 4,282
    I asked the a similar question to a Mercedes factory rep that happened to be at the dealership when I was considering the E320 CDI. I asked what, if any, affect would new low sulfer diesel have on the 2005 model. He indicated absolutely nothing, that essentially its mechanically the same vehicle runs on the low sulfer diesel in Europe now. He claimed absolutely no retrofits will be required on the US 2005 E320CDI. I ended up buying an Acura TL, but after averaging 16-18 mpg around town with the 6-speed, I'm a little envious of E320 CDI owners. Congrats on a great car.
  • gagricegagrice Pahrump, NevadaPosts: 31,432
    changes may have to be made to hoses and seals when the low sulfur diesel is introduced

    I have not read any articles that addressed any negatives from using ULSD. Everything I have read so far is very positive. If you can find any articles that pertain to changes that need to be made for ULSD, I would be interested in reading them. I think it is just the opposite. Many vehicles that were designed to run on high quality low sulfur diesel in Europe will have problems with our dirty diesel in the USA.
  • moparbadmoparbad Posts: 3,870
    The very low sulfur diesel fuel requires NO CHANGES to diesel engines no matter if it is 1980 or 2005 MB Diesel.
  • Kirstie_HKirstie_H Posts: 11,077
    A reporter is interested in speaking with someone who owns a Mercedes E 320 Diesel. If you would be interested in speaking with this reporter about your vehicle and why you decided to buy it, please contact Pam Krebs, PR, at [email protected] Please provide your contact information. The reporter is looking for responses by end-of-day today (Sept. 7). Thank you.


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    Share your vehicle reviews

  • tlambtlamb Posts: 11
    I am somewhat discouraged by the problems reported about the E series on other boards. Can anyone comment, based on actual ownership, experienced insight, or good old intuition, whether the E320 CDI is a car to avoid or embrace?
  • dudleyrdudleyr Posts: 3,469
    Not sure about which problems, but diesels tend to be more reliable/durable than gasoline engines.
  • Note: The following also posted on the Mercedes-Benz E-Class Sedans Board.
    I took delivery of an E320 CDI on 7/9/2004 from Star Motor Cars here in Houston, Texas. At my last fill up I only had 2053 miles on it. Since delivery I have had no problems and my mpg is 27.9 which is mostly in city driving. I recently drove to Dallas and back and averaged 35.33 mpg. I have noticed that the mpg is slowly increasing as the car is accumulating mileage. This is my second E320, the first was a 2001 and of course had a gasoline engine. I drove it for something over 40000 miles with only one problem that I remember and that was very minor, outside temperature display became erratic and the dealer replaced the instrument cluster. It is my opinion that only a few of the actual owners of MB that respond to these boards are satisfied with their autos. Therefore, it might be unfair to conclude the entire MB line as bad.
  • gagricegagrice Pahrump, NevadaPosts: 31,432
    "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."

    My wife would trade her Lexus in for this diesel Mercedes. She bought the LS400 in 1990 and sold her 300D. She has missed the Mercedes quality, though the Lexus is decent also.
  • tlambtlamb Posts: 11
    I am about to order a E320 CDI and intend to get the panorama roof. I will be driving in Coastal North Carolina / South Carolina. Does anybody advise against this feature due to sun or summer heat and humidity or any other reason?

    All input is appreciated.
  • carnaughtcarnaught Desert SWPosts: 2,729
    The E's a/c is more than adequate to keep the cabin cool and comfortable in any climate.
  • We have had the E320 CDI since August 20 and have the panorama roof. Some of the dealers seemed to try to discourage us from getting this, but I think that had more to do with them trying to sell a car from stock (we did have to order from the factory). We live in MD and do the overwhelming majority of our driving during the day. We love the roof. The AC keeps it cool. The pop-up windscreen keeps it quiet and if necessary, the shade unrolls to close it all up.
  • tlambtlamb Posts: 11
    Does anyone know, or have an opinion about, whether 3 mile morning and 3 mile evening commute trips only five days of seven in this CDI would be determental -- or does that concern about limited time use have to do with older diesel technology only?

    Also (although hoping no one has had the need thus far) what are anticipated engine component -- fuel injection system, for examle -- repair / replacement costs vis-s-vis the gas engine? Is the regular maintenance going to be less, more, or same as gas?
  • tomjavatomjava Posts: 136
    The old Diesel is true, but modern Diesel with complex fuel system, and electronic is more likely having problem similar to modern gasoline engine.
  • Since 2005 CDI is not smog legal in California. Can a California resident buy a used one or had to wait after 2006?
  • gagricegagrice Pahrump, NevadaPosts: 31,432
    When a car has at least 7500 miles on it you can register it in CA. There are several VW dealers in Los Angeles that specialize in used VW TDI vehicles with just past 7500 miles. Also if you were in Las Vegas and your car were to die and not be worth fixing, you can buy a new E320 CDI and bring it back to CA and get it registered. I think that would be trickier to pull off.
  • gagricegagrice Pahrump, NevadaPosts: 31,432
    I can safely report based on my recent experience of the car in the San Antonio area that the new diesel can flutter hearts on those counts as well. Indeed, I cannot conceive of anyone preferring the gasoline version to the diesel. arreviews/mercedesbenze320cdi.htm
  • rikkrikk Posts: 14
    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.
  • gagricegagrice Pahrump, NevadaPosts: 31,432
    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.
  • gagricegagrice Pahrump, NevadaPosts: 31,432
    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.
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