How much compression did a 2001 e320 engine have when new?

What is your question?

I've owned this wagon for 11 years. When purchased, it showed ~65K on the odometer. It has run well w/o issues. Over the last 2 years, I've noticed that the gas mileage has slowly decreased from 26-27 (highway) to 23-24 (same). I replaced all 12 plugs and ignition wires, but the compression check results did not seem 'right.' to me. The wagon has 202K miles. The recent compression test showed 150lb. across all 6 cylinders. Is this "good" compared to when new? Or is 150lb an indication that the engine is getting 'old/weak or worn-out and due for a rebuild?' Thanks. John

What makes this problem better or worse?

Not applicable

How long has your 2001 Mercedes-Benz E320 had this problem?

Very recent comp. test, so not really a problem.