On Wednesday more than 60 officers from customs offices and prosecutors raided seven premises in Germersheim in the Rheinland-Palatinate region.
The investigation relates to the export of approximately 190 luxury cars to Russia valued at €4.5m, with the exports conducted via Kazakhstan, Kyrgyzstan, Belarus and Turkey.
As well as evidence significant amounts of cash were seized and attachment orders have been obtained over bank accounts and real estate.