Your standard maintenance parts like filters and belts should be within a normal range. Major replacement parts will definitely be costly. Lets hope this engine proves itself to be as bulletproof as most of diesel engines. I own a 2005 Dodge Sprinter with a Mercedes 2.7L 5 cylinder turbo diesel. The van has 200k miles on it and the only thing that went out was a serpentine belt tensioner. New one was $125 plus installation so not cheap for a simple part (all imported from Germany). I'm predicting the same situation here. On a positive note, with these new Rams, we have at least 3 years of worry free enjoyment.