Yes our government is about to protect the citizenry by going after the big rigs. In a year or two all will have to meet tighter emissions by having egr or other devices. The problem with egr on a diesel is not the extra heat but the soot that gets recirculated back into the engine. This creates added wear on the engine along with mixing with blowby or turbo oil leakage to build up a big mess and stopping up the intake passages. Egr also results in less power output and lower fuel mileage because combustion is not as efficient. I would advise all Mercedes owners to disconnect the egr if they value their engine life.

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1995 S-350
370K + SOLD
1952 220B Cabriolet
39K kilometers + SOLD
1998 E300D
310K +
2012 E350 BlueTec
120K