Hi there, I'm back with some substantial info. Within our local club an owner measured his 2015 (facelifted) pearl white PHEV. It measured 100 micron around the bodywork (each panel measured). The metallic should be thinner than the pearl paintwork so cca. 70 micron should be valid for the facelifted metallic models.
Still no info on the pre-facelift PHEV - but the metallic should be somewhere at 70 micron too. These are generally pretty low values according to the guy, who's been checking hundreds of cars already with his paint meter.