Just bought a Santa Fe (4cyl), love it. Have a question: when I am driving at 40 or more, and open the back drivers side window, I get a very strong wapping noise, very rhythmic. Anybody else experience that, and what was outcome?

 

Unfortunately that's normal for a lot of vehicles, not just the Santa Fe: https://www.hyundaiforum.com/forum/h...pounding-9148/