S600's are not as bad as everyone makes them out to be, you just have to have the right mindset to own one. Ie will a $3k repair break you? If so keep looking. These were $140k cars new and act like it. Now if you are cross shopping a Ferrari V12 to one of these then no the MB's are pretty cheap to run.

Also remember the S600 itself is a very different car then an S500/420/320. The engine under the hood isn't the only thing thats different. The entine suspension is S600 specific, along with many other systems.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200