EcoDiesel is an engine used in the Ram 1500 since 2014, as well as in the Jeep Grand Cherokee. Approximately 20% of 2015 RAM 1500s are equipped with the engine, mostly ones sold in Europe. FCA uses the EcoDiesel name for two different engines. One is the VM Motori A 630 DOHC 3.0L engine used in the Grand Cherokee, and Ram. The other is a Fiat 3.0L diesel used in the Ram ProMaster.
References
EcoDiesel Wikipedia(Text) CC BY-SA