For example, the 2003-2005 Mercedes-Benz E320 with the 3.2L V6 engine requires 6.9 quarts (6.5 liters) of oil with filter change.
The 2006-2009 Mercedes-Benz E320 BlueTEC with the 3.0L V6 diesel engine requires 8.5 quarts (8.0 liters) of oil with filter change. It's always best to refer to the owner's manual or consult with a qualified mechanic to determine the exact oil capacity and type for your specific Mercedes-Benz E320 model.