Tesla could have a problem with one of the best things about owning its cars (TSLA)

Access to Tesla's Supercharger network is one of the biggest perks to owning a Model S.

At a Supercharger, an owner can have their Model S charged up for free in about 30 minutes.

And owners can do this for the lifetime of the vehicle.

For many, unrestricted access to these stations is a major selling point for the $100,000 electric cars.

However, in recent months, Tesla owners have been grumbling that the company has been discouraging the use of Superchargers for anything but long-distance trips.

On Tuesday, the Wall Street Journal reported on complaints of overcrowding at a couple of specific charging sites in the network.

According to the Journal, Tesla owners at the Supercharger station in San Juan Capistrano, CA have reported heavy congestion and long wait times.

The station – located between Los Angeles and San Diego — often finds all eight of its Supercharger stalls full of Model S sedans.

Although technically any driver can access the Superchargers at anytime for any reason, the company would prefer that owners charge their vehicles at home and use the network to avoid "range anxiety" on longer journeys.