Just got a 2018 ecoboost premium - no major options other than auto trans. When the radio is on but volume turned all the way down (and engine off) it sounds like there's a radio cooling fan but it's surprisingly loud. It even overpowers soft music. Anyone else have the same issue? Thanks!!!

 

Must be the 'fake' engine sound that comes through the radio speakers. Take it to your dealer and let them look at it