Europe, it will cost a large fortune to import it into Kalifornia.

If you want a CDI your only options are used 2005-2006 E320 CDI, a used 2007-2008 E320 Bluetec or a Dodge Sprinter van. There is no S-Class diesel after the W140 S350 and there are no new MB diesels sold in CA.

The V8 CDI will not be in the USA for another 5 years at the least, if ever.