Dirty brake pads could cause a car to make a squeaking noise when putting the car in gear or when releasing the brakes. Cleaning, sanding, or replacing the brake pads should make the sound stop.
If your vehicle is squeaking when it goes over bumps, you may need new shocks or struts. The front end of the car wears more quickly than the rear, so the issue usually begins in the front.
Defective rear shocks. Loose exhaust components.
could be struts and or strut brg plate that mounts the strut at the top
You should check the struts.
A lot of times the grinding sound that is heard when going over bumps is actually the car scraping the cement. If it is not a serious problem then the best thing to do would be to drive slow over the bumps.
Any bushing, if its worn or old enough, causes suspension squeaking at low speeds and when going over bumps. The typical cause of squeaking noises when turning the steering wheel is low power steering fluid. The power steering fluid reservoir should be checked and the fluid topped off if it is low. Fill your reservoir with manufacturer-specified fluid (or have your oil-change service station do it). With a very low fluid level, the whining sound will be accompanied by a difficulty in turning the wheel.
It maybe your suspension that squeaks when ever you go over the speed bumps.
I have the same car with the same problem.. i have tried to find what it is, but my only explanation is something to do with the suspension. does it make the same noise when you bounce the car up and down?
If it is a front wheel drive car have the cv joint checked or one of the suspension components like tie rod ends or shock absorber.
Bad CV joint on the axle maybe?
Your Axle