Why is my Ford S-Max making strange noises when accelerating?

I recently purchased a used Ford S-Max and have been noticing strange noises coming from the engine when I accelerate. It almost sounds like a whirring or grinding sound. What could be causing this and how can I fix it?

It sounds like there may be an issue with your transmission. I recommend taking it to a mechanic as soon as possible to get it checked out.

It's possible that your air filter may be clogged, causing the strange noises. Try replacing it and see if that helps.

I've had a similar issue with my Ford S-Max in the past and it turned out to be a loose belt. Make sure all the belts are properly tightened.