IS MB involved in Dieselgate? Some think so
12-21-2015, 09:34 PM
#26
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2014 E250 4Matic, GLE 300 BT
AdBlue Tank
The only things I don't like about my E250 are the run-flat tires and lack of a spare. I guess all of this traces to the AdBlue tank. I don't want to give up the diesel, so, may have to bite the bullet and move to an S class next time unless MB sorts this out. Not at all opposed to getting an S class, but they are a bit more pricey ...
12-21-2015, 10:39 PM
#27
Super Member
You are correct. The VW 2.0L TDI has a 19 L tank, while the E250 2.1L Bluetec has a 28 L tank, or 47% greater volume of urea for a similar size engine ! The urea tank in both cars is supposed to last for 10,000 mile service intervals. It's obvious that the VW diesel uses far less urea/mile than the MB diesel. Why ? VW cheats !!!
And yes, with 35k miles on our Passat, we have had a need to fill that 19l urea tank 3x's already, once every 10k miles like clock work. So rest assured, it's still injecting that urea.
Last edited by Mike450; 12-22-2015 at 11:56 AM.
12-22-2015, 02:06 PM
#29
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1953 300 Adenauer, 1971 300 SEL 6.3, 1975 600, 1978 450 6.9
MB and VW are the undisputed kings of diesels in passenger cars in first world countries.
A few months ago you probably would have said the same of VW.
Both cars use a similar urea injection diesel particulate filter technology. Both cars have mpgs that exceed the EPA ratings. What makes MB different from VW?
This was not intended to be a thread that maligns MB but to raise the question about how MB may (or may not) be different from VW.
A few months ago you probably would have said the same of VW.
Both cars use a similar urea injection diesel particulate filter technology. Both cars have mpgs that exceed the EPA ratings. What makes MB different from VW?
This was not intended to be a thread that maligns MB but to raise the question about how MB may (or may not) be different from VW.
12-22-2015, 02:18 PM
#30
Junior Member
Food for thought, I currently have about 47.5K on my '14 E250.
My E250 uses historically around 3.5gal for 10k miles.
I am currently running a usage test, I have gone about 15K miles so far and still no warning that the DEF tank is low or needs to be refilled.
I am hoping I can go to the next 50K service before refilling. I am able to, this would have been over 18K miles placed on the tank, 2.5k miles from now.
Also part of the testing reason, like to use up any older fluid from day 1 left in the tank for a fresh refill.
I refill my DEF tank at large truck stops to attempt to ensure I put in fresh DEF on refills.
Another thought I have noticed. When I wash my E250, the exhaust outlets are rather clean, mostly road dirt, not dirty soot. While attempting to observe other diesel cars on the road, most I seen have very dirty exhaust outlet, while this observation is not a controlled test, it is interesting to say the least, MB E250's do run a rather clean exhaust where most other diesel vehicles I notice do not. Even the newer VW which uses a DEF system.
My E250 uses historically around 3.5gal for 10k miles.
I am currently running a usage test, I have gone about 15K miles so far and still no warning that the DEF tank is low or needs to be refilled.
I am hoping I can go to the next 50K service before refilling. I am able to, this would have been over 18K miles placed on the tank, 2.5k miles from now.
Also part of the testing reason, like to use up any older fluid from day 1 left in the tank for a fresh refill.
I refill my DEF tank at large truck stops to attempt to ensure I put in fresh DEF on refills.
Another thought I have noticed. When I wash my E250, the exhaust outlets are rather clean, mostly road dirt, not dirty soot. While attempting to observe other diesel cars on the road, most I seen have very dirty exhaust outlet, while this observation is not a controlled test, it is interesting to say the least, MB E250's do run a rather clean exhaust where most other diesel vehicles I notice do not. Even the newer VW which uses a DEF system.
12-22-2015, 05:24 PM
#31
MBWorld Fanatic!
MB and VW are the undisputed kings of diesels in passenger cars in first world countries.
A few months ago you probably would have said the same of VW.
Both cars use a similar urea injection diesel particulate filter technology. Both cars have mpgs that exceed the EPA ratings. What makes MB different from VW?
This was not intended to be a thread that maligns MB but to raise the question about how MB may (or may not) be different from VW.
A few months ago you probably would have said the same of VW.
Both cars use a similar urea injection diesel particulate filter technology. Both cars have mpgs that exceed the EPA ratings. What makes MB different from VW?
This was not intended to be a thread that maligns MB but to raise the question about how MB may (or may not) be different from VW.
They may use similar systems but obviously they spray way different amounts of the AdBlue in the exhaust gas. MB developed this system and patented it. They probably set the limits for the spray in their patent that VW cannot use. Somehow they forgot to patent the test use of the car as VW is able to spray enough during the emission test.
Last edited by Arrie; 12-24-2015 at 03:18 PM.
12-22-2015, 05:52 PM
#32
MBWorld Fanatic!
The only things I don't like about my E250 are the run-flat tires and lack of a spare. I guess all of this traces to the AdBlue tank. I don't want to give up the diesel, so, may have to bite the bullet and move to an S class next time unless MB sorts this out. Not at all opposed to getting an S class, but they are a bit more pricey ...
