Suspension Squeaking and Creaking

If asking about the 2016, take it to the dealer for warranty.

If an older Prius, likely worn out bushings &/or shocks. You could spray the bushings one at a time, w/ a lubricant, then drive to see if noise decreases/goes away. This will help you figure out which bushing(s) have gone bad, assuming the bad bushing is not easily visible.

Some company may possibly be making or will soon make a complete bushing replacement kit. These kits are available for older popular cars.

 

When were the front struts and rear shocks last replaced? Replacement may likley get rid of the squeak.

The sturt/shock manufactures recommend 5years/50K miles replacement interval to maintain optimum handling and braking capabilities.
KYB Americas | When to Replace Shocks

So if the car needed tires or brakes, you would not spend this money b/c this maintenance repair equals a fraction/percentage of the cars market price? Isn't it cheaper to keep this depreciated asset on the road instead of taking a loan to buy a new or a new-used car that will drop in value much faster than the depreciated asset you have now?

You could also drop comprehensive and collision, if you have not already done so? This will likely save you hundreds a year on insurance. A financed vehicle purchase (new/used) would require you to maintain comprehensive and collision.

 

I'm experiencing this exact same thing with my 2007 Prius. I've had this car since 2010 and this noise only started being noticeable a month ago. Took it into the shop and they replaced the struts. Even though it made sense to replace the (probably original) struts, the front end squeaking and creaking didn't go away. So now they think the bushings are causing this and are advising to replace those. Is that most likely what is causing this? They mentioned possibly replacing the bushings and tie rods at the same time. I'm not sure what to go for.