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Opinions/Info on CDI engine longevity
I’m looking at a 2004 E320 bluetec with 220k miles. I haven’t seen it yet as it is a bit of a drive. Assuming it has been maintained properly - is it a vehicle worth looking at? What kind of mileage are this cars capable of? What are the typical issues on a car that age and mileage?
I’ve had a gas engine model, an E350, which was nice but had 2 issues with electronics that made me sell it after the factory warranty had expired. Thanks in advance for your posts! Last edited by Don Andres; 07-11-2018 at 09:19 PM. Reason: typos |
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Are you certain as to year and model number? I didn't think Bluetecs came to US until 2007. And it IIRC, there were no MB diesel sedans in US from 2000-2004 (although of course MY2005 came out in 2004). But perhaps I'm mistaken.
In 2005 and 2006, there was the E320 CDI with the OM648 engine. Very, very durable. There's a guy over on Benzworld with 444,000 miles and counting...still going strong. 220k miles on one of those is fine if it's been well maintained. No real issues.
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
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The W211 platform is VERY electronics laden. If you own one and don't want to be married to a dealer or independent garage, consider investing a decent sum into a quality scan-tool or a service computer clone.
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Current stable: 1995 E320 149K (Nancy) 1983 500SL 120K (SLoL) Black Sheep: 1985 524TD 167K (TotalDumpster™) Gone but not forgotten: 1986 300SDL (RIP) 1991 350SD 1991 560SEL 1990 560SEL 1986 500SEL Euro (Rusted to nothing at 47K!) |
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To my knowledge the E320 does not run on air struts so that eliminates one big issue right there. Do you know if it has an electronic shifter on the automatic transmission? Edit: looks like air suspension was an option. I better check. Last edited by Don Andres; 07-11-2018 at 03:21 PM. |
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It would be good to familiarize yourself with the SBC braking system. No need for that to scare you off...just be aware of its distinct features.
Markets differ from region to region...in the Northeast I wouldn't expect to pay more than $7000 for one in perfect condition with that mileage.
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
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Thank you, I hadn’t heard about an SBC brake system. I’ll look into that.
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Many people on this forum seem to really like their ‘05 and ‘06 W211 CDIs. I have owned an ‘06 E350 gas wagon since it came off lease in early ‘08. I have not found the W211 to be an inexpensive car to own, mostly due to electronics issues. I also do not think the quality is up to par with the older models. Really the only thing I prefer about the E350 versus my ‘85 300D is the air conditioner. I have seen many for sale with high mileage, so the CDI engine seems capable of covering many miles. I wonder, however, whether electronics issues not related to the motor will prevent them from lasting as long (in years) as the older E-class vehicles.
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Christopher '06 Mercedes E350 station wagon (silver/black) '85 Mercedes 300D (black pearl/palomino) '85 Mercedes 300SD (smoke silver/burgundy) '79 Cadillac Sedan DeVille '05 Toyota Camry (because always running is nice) '85 Mercedes 300D sold back to orig. owner 8-1-06 '84 Volvo 264GL Diesel, owned 2000-2013 |
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I'll check out the car on Friday. Until then I'll do some more research. |
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There's nothing really problematic about it. You just need to be aware of the fact that, if the SBC pump has not already been replaced, it's probably close to needing to be replaced. Not horrendously expensive. And you can use this as a bargaining chip with the seller. It's a fabulous braking system....just need to be aware of its unique maintenance needs.
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
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The 648 engine is one of only two reasons I'd ever own a 211 car.
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90 300TE 4-M Turbo 103, T3/T04E 50 trim T04B cover .60 AR Stage 3 turbine .63 AR A2W I/C, 40 LB/HR MS2E, 60-2 Direct Coil Control 3" Exh, AEM W/B O2 Underdrive Alt. and P/S Pulleys, Vented Rear Discs, .034 Booster. 3.07 diffs 1st Gear Start 90 300CE 104.980 Milled & ported head, 10.3:1 compression 197° intake cam w/20° advancer Tuned CIS ECU 4° ignition advance PCS TCM2000, built 722.6 600W networked suction fan Sportline sway bars V8 rear subframe, Quaife ATB 3.06 diff |
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https://en.wikipedia.org/wiki/Sensotronic_Brake_Control That article also mentions that Daimler Benz returned to fitting conventional brakes to the W211 in 2006. Wouldn't be the first time that an article on Wikipedia is not correct. Unless of course it is the truth because it was on the internet! |
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If it's a 2006 CDI you're looking at, then it definitely has SBC. But, yes, they did change back to a hydraulic system in 2006 for the 2007 E class. I researched the issue to death when I bought mine...ended up being very happy to have it. Right now I'm at about 510k actuations....figure I've got about 30k miles to go.
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14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles 06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU 91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion 19 Honda CR-V EX 61k mi Fourteen other MB's owned and sold 1961 Very Tolerant Wife |
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Look up "black death" issue also. Not personally familiar with the issue but it pops up on 05 and 06s from what I have read here. Looking at one also. All may look good in the engine bay until plastic covers are removed.
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