Just bought a 2000 s70 with 70,000 and "discovered" a rattle in the front end when going over even smaller bumps. Don't thing its the spring seats but could be. The plastic tray under the front engine seems to be loose and knock against something when I push it up. Are these things normally so loose? Any other thoughts. Also there is a bubbling noise behind the front dash when I first turn the heat on but seems to go away after the car heats up. Could this be air in the coolant lines. Just had the coolant replaced.

I had a 850 before this car and it seemed a lot quieter going over bumps and a little tighter feel to the drive??? Maybe I'm paranoid.