Spiegel first reported the inquiry and the SEC's request for information about the issue made in early April and quoted VW as confirming the investigation.
What is Voltswagen? And why is everyone upset about it?
The revised name takes effect in May and the announcement came after several outlets on Monday reported on a draft release mistakenly posted on the automaker’s U.S. website.
Currently, the only electric model on sale in the United States is the ID.4 electric SUV. There are plans for the company to bring back the iconic microbus in an EV form, but that still a while away.