hot air coming in to the car from the pedal area

Hi guys, I got my 14 Elantra GT 3 months ago.
I and my wife like it so much with all the features except one thing.

If I am driving with all the windows and roof opened, I can feel the engine heat coming in to the car from the pedal area. I took it to the dealer and they said it's normal.

Do you guys have this experience??

Thanks