So I own a 2013 but don't drive it often, leaving that to my family. Hooray being a breadwinner. It was bought new off the lot and has had no accidents. Oil is at 23% lifespan.
I fire it up for the first time in 5 days and notice a whining sound when I start accelerating or cruising (no pun intended). When I break, the noise immediately ceases. I tried this on flat areas, on a downward slope, upward slopes.
Accelerating ----> Noise
Cruising ----> Noise
Breaking ----> Noise ceases.
I haven't paid much attention to RPM's as its too crowded this time of day, but I wanted to figure what your advice was. I have a theory and it sounds expensive.