Randall, before spending too much time researching the W210 wagons be sure that you are satisfied with the way they drive/handle. With the rack & pinion steering the W210 wagons will feel quite different from your 300SDL. Certain W210 automobiles had rust issues under the door seals so inspect for that. Have a PPI (pre-purchase inspection) performed by a MB-trained tech on any automobile that appeals to you.

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Fred Hoelzle