Emission componets are required to go 10 yrs, so after having to replace 1000s+ of the traps MB designed the oxidation cat for the cars(simular to the 1995 E300D). The new version should last as long as the injection pump isn't too rich. As far as I know no one has the equiptment to measure the emissions on diesels except for U.S. gov. This generation of engines are pretty darn good as long as the cooling system is good!
MERCEDES BENZ MASTER GUILD TECHNICIAN
ASE MASTER TECHNICIAN
27 YEARS DEALER M.B. TECH
190E 2.3 ITS RACECAR