I've read discussion on the R170 forums. For some reason, the R170 model is considerably more reliable than other MB models. My friend had one and put 120K on it with little trouble.

I've heard that as they get older, the hydraulic cylinders for the top mechanism can start leaking, as they do on nearly every other MB convertible. The good news is that there are only five cylinders for the R170, compared with eight on the E320 or twelve on the R129 models.

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95 E320 Cabriolet, 169K