STORY: Tesla CEO Elon Musk has projected confidence that the EU will soon green-light the carmaker's "Full Self-Driving" system.

But emails from some European regulators show marked skepticism toward the tech...

and its stated safety benefits.

Tesla's FSD technology was cleared by the Dutch road regulator RDW in April.

RDW is now seeking EU approval for FSD, with a key committee hearing scheduled for Tuesday.

Tesla has a lot riding on FSD approval in Europe, where it is trying to regain market share.

The EV maker charges a monthly subscription for FSD, which can drive itself under certain circumstances...

but requires the driver to be fully attentive at all times.

But in previously unreported email correspondence, regulators in the Netherlands, Sweden, Finland, Denmark and Norway - who could prove critical to Musk's approval push - have raised a number of concerns over the technology.

Those include the system's tendency to speed, whether it is safe to use on icy roads...

and drivers' ability to circumvent features designed to prevent cell-phone use.

That's according to the emails, which were seen by Reuters through public records requests.

They also expressed frustration with Tesla's strategy of publicly encouraging vehicle owners to pressure regulators to approve FSD.

The EU committee will hear on Tuesday from Dutch officials about why they approved Tesla's FSD.

Tesla did not respond to requests for comment.

For FSD to be approved, committee members representing 55% of EU member states and 65% of the bloc's population must vote "yes."

There is no vote scheduled on FSD this week.

And the next committee meetings are expected in July and October.