When riding in wife's 2013 C-Max Hybrid this morning at 26 degrees noticed that as her ICE started and stopped the sound from it was barely noticeable. When the ICE kicks in on my 2013 Fusion SE Hybrid it generally sounds like a truck starting and stopping when driving under 40 mph. My question is if there is a way to check that that system is actually functioning? I am reasonably sure that without some type of proof or an electronic way to check my dealer will decree that the sounds from this car are "normal". I would appreciate any info I receive.