Try your test again...
this time push down on the fender directly over the tire. Push whith all your weight a couple three times, then step back and watch. How many times does the fender rise and fall before stopping? If it continues moving up and down while you're watching you need shocks. If it stops almost as soon as you stop bouncing it, then they're OK.
'73 280SEL 4.5 (9/72)- RIP
Only 8,173 units built from 5/71 thru 11/72
'02 CLK320 Cabriolet - wifey's mid-life crisis
2012 VW Jetta Sportwagon TDI...at least its a diesel
Non illegitemae carborundum.