I drive a Skyactiv 2013 Mazda 3 2.0 Liter MT 65,000 miles, and recently bought a 2023 CX-5 NA AT bought new, now at 10,000 miles. Over time I noticed pretty much the same noise with the same characteristics in both vehicles. I get to maybe 45 MPH ish, and I hear a whine that slowly raises in pitch with speed.
Both cars drive perfectly normal. Seems unlikely that it’s an issue since both cars do it. I’ve read a post or two where people took their cars to the dealership and they said it was a normal sound that the alternator makes. Interested to see if anyone else experiences this with their car, or has any thoughts on it.
Thanks for reading, love the subreddit everyone!
Awesome thanks for the response, is it normal for just the Skyactiv G or other Skyactivs as well?
I also have a faint whine on the skyactiv x on a 2021 mazda 3. It usually happens when accelerating hard at speeds higher than 40 miles per hour. To me it never sounded like something wrong but rather as a particularity of the engine.