It will run dependent on two things, material compatibility and then timing.
The former will get you eventually but the VW is fine as far as I know. Peugeot may not be and I would be careful, Mercedes should be ok but not enough of these sort of owners are popping in or I have not read about them.

Timing is more subtle, the computer may retune itself or not, this is more of a black art, and you will need someone with the software necessary to do it to get the absolute best out of it.

Overall try it, and see what your experience is, it will nto blow up and make sure the fuel is well made.

Matt

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Biodiesel Bandit

Landcruiser 98 B100
Peugeot 306 stdt B100
Peugeot 2004 2L 307 HDI Does not like B100