Hello, everyone. I'm on my 3rd Prius (a 2011 - none of my Priuses have ever given me any problems). Gonna choose among Q3, BMW x1, or Volvo XC40 in a couple of months. I need more a more spacious vehicle. What octane gas does the 2019 Q3 manual recommend (I'm of the mind that you use the octane the owner's manual recommends.) Please excuse such a simple/newbie question. Thank you!