It all depends on what you want to pay:
http://www.autotrader.com/fyc/vdp.jsp?car_id=187623271&dealer_id=56764180&car_year=1995&make=MB&distance=0&lang=en&max_price=&model=E300D&end_year=1995&min_price=&certified=&bkms=1124907210722&address=06460&search_type=both&advanced=&start_year=1995&isp=y&cardist=2462

http://www.autotrader.com/fyc/vdp.jsp?car_id=187631798&dealer_id=56765545&car_year=1995&make=MB&distance=0&lang=en&max_price=&model=E300D&end_year=1995&min_price=&certified=&bkms=1124907210722&address=06460&search_type=both&advanced=&start_year=1995&isp=y&cardist=2458

I would consider 200k miles or less to be average.

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