here is the underside of my gfs corolla hybrid
notice how toyota actually made a proper rear diffuser? the front belly pan is also a harder plastic than the cardboard like material hyundai used for my ioniq. smoother and less open holes too
i wonder why hyundai didnt do what toyota does? to cut costs? i know the ioniqs selling point was to be several thousand dollars cheaper than the prius, typically toyota costs more than hyundai because of the name only. i wonder if cost wise is why hyundai didnt do a rear diffuser and clearly made a much worse front belly pan...