Hello, I have a 2007 Forester with an automatic transmission and only 12,000 miles. There is a low rumbling noise that I hear only when:
1. Begins at higher speeds, minimum 50 mph (no noise whatsover below 50 mph regardless of whether accelerating, coasting, etc.)
2. Only happens during throttle/acceleration - noise disappears when the vehicle is coasting or maintaining speed (50+ mph), and re-appears the moment I hit the gas.
3. I sometimes hear an occasional exhaust system rattle, not the rumbling noise, but perhaps related?
I know other threads touch upon wheel bearings, but would that be case when the noise only appears when accelerating? Might another possibility be the transmission?
The tires are the original Yokohama and again only have 12,000 miles of wear.
Would greatly appreciate any suggestions on where to start.
Thanks!