I have a BMW 5 speed don't really know the model, but since yesterday everytime I accelerate and break, this rattling noise goes off, sounds like there is something stuck underneath the car, if I drive slowly it rattles slow, if I speed up the noise keeps up with me. Now I'll be honest I bought the car about 6 months ago or so as a cash car, and I haven't made any oil changes or repairs to the car since I got it. Do you know what this can mean? I'm afraid im too late to repair it and im also low on $..