Goodbye Bluetec!!




After reading all the various problems on this board and a friends experience with a Bluetec, I feel like these diesels are a black hole of very expense problems waiting to happen.
My car will be gone just before the warranty expires. I would consider a gas model MB but there are too many other reliable cars out there to buy without the exorbitant maintenance costs.
I enjoy the car but don't like feeling like I'm driving a big $$ sign around waiting to happen.
Way too many problems with the OM642 because of a complicated emission system which other diesels may share in part. Add to that the sometimes overly complex German engineering and it's more than I want.
By way of example, I changed the air filter and cabin filter on my wife's 2017 Acura RDX and it took about 10 minutes for both. It takes me 20-30 minutes just to change the cabin filter on my MB. And then comes the two air filters......








Had one of those and was pretty annoyed with power curve.
Usually you don't buy diesel to rev it 5000 rpm for decent acceleration.
When I agree that OM642 is over-complicated engine, but it is bad-*** diesel and brings smile on sharp cornering. Sorry to hear fellow owner had such bad experience.
If you want something easy to work on - the newer I4 diesel is the thing, but then new technology cost extra. Not that 40 mpg will not offset the cost sooner or later.
I have to get rid of one of the above and as well as my SL500, but it is tough decision. I love them all
Last edited by kajtek1; Jul 9, 2018 at 02:40 PM.
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When it comes time in 900 hours or so to rebuild my Beechcraft IO470 chances are that I'll swap to a TDI aviation motor for it. My first diesel was a 83' Datsun Maxima, second a Volvo 740D, several vintage Benz's...it's absolutely staggering how far diesels have come. There is a price associated with that but my goal is die broke, no kids or family left, might as well indulge what makes me smile.
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Based on just the postings on this board we've heard of several OM642 problems like timing chains, intake clogging, turbo seal failures, DPF problems, Adblue problems, swirl motor problems, etc.
Considering all of the above do you think MB will cry "Uncle" and just get out of the passenger diesel business altogether? Looks at the trend from other car makers deciding to go mostly electric.
What do you guys think?




Just weeks ago drove across Nevada and in the city of Hawthorne (everybody hear about Area 51, right?) and they have 6 spots Tesla charging station.
Still US is having too much propaganda about technology. Cut government subsidiary and then we can see.
But with my present fleet, I think next vehicle will have to be self-driving. Don't care much electric or diesel. Both have their good and bad parts.
I like Porsche idea of hybrid, where you can drive the car 30 miles on battery charge, or fire up the engine when you go for longer trip. Why nobody makes that with diesel?
I mentioned the ease of maintenance on my wife's 2017 Acura RDX. A dealer tranny flush and rear diff flush combined is only about $150. My 2012 Bluetec was around $450 or so just for the tranny flush. If I do an oil change on my own car it cost me around $90 for oil and filter because of the ridiculous MB oil spec requirements. If you're on the road somewhere remote, try to find oil that meets spec. MB does their service based on time and mileage. They can void the warranty if things are not done on the time schedule. I had to do the tranny service after four years even though I had only 29k miles. Things like that drive me crazy.
I'm going to look hard at Lexus, Acura, Infinity, etc. for my next ride before my 7/70 runs out. It may not have all the qualities of an MB but Lexus for instance isn't far behind. Maybe Cadillac too.








Based on just the postings on this board we've heard of several OM642 problems like timing chains, intake clogging, turbo seal failures, DPF problems, Adblue problems, swirl motor problems, etc.
Considering all of the above do you think MB will cry "Uncle" and just get out of the passenger diesel business altogether? Looks at the trend from other car makers deciding to go mostly electric.
What do you guys think?




Meaning converting the gasoline engine to propane will make it cheaper to drive than even 60 mpg diesel.
Conversion is not cheap, but computerized system will start cold engine on gasoline, since propane does not like cold and then automatically switch to propane when engine warms up.
OM642 engines are used in Sprinter vans and those not only work much harder, but are driven for millions km as well.
We will have to see what technology will bring for the future, but something is very wrong with parts for the diesels already on the road.
For my 250 Bluetec I placed order for remanufactured DPF on June 1. Only 3 days ago got the confirmation that the filter will leave Germany on August 7. We are talking wearable with 90k intervals.
Meaning you have to have 2 cars if you plan to use 1 of them.


