Like the title says.....Just wondering, what exactly is it that has made the OM606 engine unreasonably expensive? I'm seeing asking prices in the 4K to 5K range for used examples with "under 250K miles". Please, enlighten me, is it power output, reliability, ease of maintenance, etc......

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2012 Mercedes ML350 Bluetec 91K (hers)
2005 Corvette 55K (fun car)
2002 VW Jetta TDI 231K (mine)
1998 Volvo S70 T5 Turbo 196K (kids)
1994 Ford F150 4WD 249K (firewood hauler)
1983 Mercedes 300D 376K (diesel commuter)

I think there was not as many diesel cars with that engine sold in the US. If something is scarce it demands a higher price.

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84 300D, 82 Volvo 244Gl Diesel

It’s the demand for guys wanting to tear apart the w210 which was a great chassis to swap the 606 into their rat junkyard mobile. I’d buy everyone of these w210s with the 606 if I could. I won’t sell any of mine. If I “did” hypothetically, I’d do a 100 percent interview on the buyer.

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Only diesels in this driveway.
2005 E320 CDI 243k Black/Black
2008 Chevy 3500HD Duramax 340k
2004 Chevy 2500HD Duramax 220k