An 12 year old car is" bottoming out" during driving. Could this be caused by a damaged rear end suspension?...or what is your guess?
Hello and thank you for trusting us with your question. I'm Dj.
Bottoming out is usually a combination of springs that are weak and have begun to sag, and worn shock absorbers.
The proper way to fix this is to replace the springs, but you can also use spring spacers for a lot less money and get the car back up to the proper height.
Replacing the shocks with a more robust, heavy duty shock absorber will help a lot also.
Please let me know if you have any more questions on this or if there is anything more I can do to help you.