usually a loose heat shield or a muffler rusting out, exhaust parts rust from inside out. My money is on a loose heat shield
If it is a cruching, squeeky kind of sound you most likely need your rear struts lubed. Minor and inexpensive.
Sorry, but I'm looking for my rattle as well. I have a 2001 Pontiac Grand Am. Someone told me it was the struts. Well, new struts, same rattle. My rattle is right in the passenger side rear seat area. Any bump, no matter how small and I hear it. Had the seats out. All I can say is it's louder with the rear seats folded down. I've checked everything obvious.
Check just in front of the muffler. The pipe that connects the muffler and the catalytic converter went on my 97 GTi, a portion of the exhaust system was sitting on a support causing a rattle sound when accelerating.
The rattle could be caused by loose bolts or worn suspension parts. The rear suspension should be checked to insure that no parts are close to breaking.
Check for a broken shock.
How do I repair rattle on the rear passenger sliding door of 2002 Odssye EXL. Most notable during the winter
Ensure the anti rattle clips/springs are attached to the brake pad or it will rattle. Some cheap pads do not vome with these clips/springs.
check the tailgate Check the ubolts on the axle, I had a rattle in the rear, the u bolts were loose on the drivers side of the rear axle i had a rear end noise as well. turned out my spare tire was loose. might want to check that out. My rattle was a broken leaf spring
My mom has a 2000 Forester that has a rattling sound at idle. Question regarding yours: Does your rattle sound metallic, almost as if sheet metal was banging against something? If so, it could be a loose exhaust hanger or heat shield. The reason this is my guess is based on the location of "coming from your feet". A lot of newer vehicles have various forms of heat shielding on the undercarriage, especially near exhaust systems. As for the situation on my mom's car, it's been that way for about 45,000 and is more of an "ignorable nuisance" if anything. I guess a better way to describe the noise would be to ask if it sounds "tinny".
If it's coming from the rear, I would check either your catalytic converter or your muffler. Either could have pieces loose in them that would cause a rattling sound when you either push or release the throttle.
Something bad. Possibly a loose bolt. Get it looked at ASAP
It is a compressor for your rear "auto level-ride" suspension. The car automatically adjusts the rear shocks to how much weight is on the rear end of the vehicle. This is to help maintain control of the vehicle with heavy loads, while offering a comfortable ride.