I would not buy that car without a PPI done by a dealer. Unless you could get it for under $10k. The owner knows what the check engine light is, if it was a cheap simple fix he would have done so.

The early W210's had problems with the spring perch's snapping off. Inspect the joint for rust coming through the undercoating. If you see any don't drive the car!!

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200