I don't think it's Mazda grilled, as it's not "smiling." Camrys get mid-size, and I believe the Avalon gets full-size. The Sonata is exterior mid-size, interior full-size (by EPA classifications) Hyundai is good at that; The Elantra is EPA 'compact' exterior, 'mid-size' interior.
I just want to see how badly we can trounce the EPA in one.