This pertains to a 2013 Honda Fit. When the left tire goes over a bump, a knock/rattle is heard coming from the left front of the vehicle. This does not happen when the right tire goes over a bump. With the car parked, I can repeatedly press down on the front end to get the suspension oscillating to generate the same sound, but only after the amplitude of the oscillation is sufficiently large.

I don't think the struts are worn out, as the suspension still seems to be as tight as it was when new.

Any ideas?

 

In addition to a worn strut, other causes are a worn ball joint(also can cause sloppy steering and vibration), loose sway bar mounting bracket, worn sway bar mounting bracket bushing, loose sway bar link, worn sway bar link bushing, loose upper strut nut.