It says that, but the math doesn't leave any room for fuel.
> During the first 300,000 miles the total combined maintenance and fuel costs of the Tesla Model S were $10,492, with a total of 12 days in the shop. Of these costs, $6,900 was scheduled maintenance and $3500 was headlight damage due to driving through deep water.
I guess maybe they're including fuel costs in "scheduled maintenance"?