Hey all, recently purchased a 2018 CX-5 Touring. I didn't notice this right away because I had my music playing most days, but while on a road trip when I'm between 1500-2000 RPM with speeds ranging from 55-65 MPH, I've noticed a slightly higher pitched noise that appears to come from the engine. It's very faint, and I tried to see if my girlfriend could hear it, but she couldn't. It's hard to explain, but it's somewhat of a whining higher pitched sound, but very very faint. It only happens at the higher speeds, and seeing that this is my first Mazda I wasn't sure if it's just normal engine noise from the SKYACTIV engine or anything to be concerned about.