2015 S3 3,200 RPM at 45mph
 

My S3 has 1,100 miles on it now. At seemingly random times will leave itself in 3rd or 4th gear at rpm above 3,000 instead of shifting when I hit cruising speed. Previously had a 2010 A5 Cabrio and 2013 S5 Cabrio and never experienced this with those cars. Does anyone else experience this? I'm in Phoenix where temps can get up to 110+. Could the heat have something to do with this?

Posted this in the wrong forum. Can someone delete this thread? Thanks!