The National Highway Traffic Safety Administration has opened an investigation into possible axle failures on 2013 Hyundai Santa Fe vehicles.

The NHTSA said they received at least two reports from Santa Fe customers claiming they experienced axle-shaft failure which resulted "in a loss of motive power."

The investigation involves 50,000 vehicles, which would be huge if Hyundai is forced to recall those models over the issue.

No crashes or injures have been reported as of press time.

The NHTSA started its investigation on July 5.

"They are fixing it, but I did tell them that I will be leery driving it again," an owner said in one of the two complaints according to the NHTSA.

The news comes just a day after the NHTSA said it will be investigating GM about its testing methods for recalled vehicles.

A vehicle reportedly caught fire recently after supposedly being deemed okay by GM's testing system it uses for all recalled models.

The recall covered 43,000 Buick LaCrosee and Regal vehicles according to the NHTSA.

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