My car rattles :(

[BlackleR]

When im driving i can hear somin like the boot rattling anything i can do to stop it rattling? Not the actual outside of the boot but something behind me rattling. Also my drivers seat is squeeky when i turn around corners, also when people shut the doors it doesnt sound nice like a new car when u shut the door, mine sorta makes a vibrating soudn when u shut the door.

[Audacity Racing]

as for the door... there is a bar that joins the door to the car body. spray some lubricant on it and the vibrationa nd noise will go away