Xerxes71

Just bought a 2013 RX350 with 0 miles. Driven it for 300 miles before taking it for a long drive to Washington DC, New York city, then Niagara falls in Canada then back home to Illinois for 3,000 miles. After this long drive, noticed that the engine sound is not quiter anymore compared from brand new, is that normal after the 3K mile drive from brand new? Any comments/answers would appreciate.