Date registered: Feb 2008
Vehicle: 2004 W220 (S430) ; 2001 R129 (SL500) Sport
Location: Alabama Gulf Coast--formerly Charlottesville, VA
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The mechanical and styling feasibility of a rear wiper is probably no big deal. The obvious question is why, then, hasn't MRZ or any other manufacturer done it? I'm sure we aren't the first folks to pose the question. The answer is either a cost one--it's too expensive for the convenience added--or it's a marketing one--there aren't enough consumers asking for it to spend the engineering and styling money to make it. I think the reality is sedan rear windows do not get the air flow backwash from under the car that hatchbacks and wagons do and so they stay more clear in bad weather and less dirty in general than the others. For myself, I find my W220 back glass stays relatively clear if I keep it clean so water flows off it. Too, the wing mirrors provide adequate rearward vision if the back glass is obstructed. Frankly, I've never thought much about it. Maybe there are other issues I'm not considering, but that seems the heart of it to me.
"Don't pick a fight with an old man. If he is too old to fight, he'll just kill you."--John Steinbeck