Tesla announced today that the National Highway Traffic Safety Administration (NHTSA) has given the Model X SUV 5 stars in all of its crash-test categories and subcategories, including in the rollover rating, where SUVs typically fall short.

The automaker says it is the first SUV to get top scores across the board.

“More than just resulting in a 5-star rating, the data from NHTSA’s testing shows that Model X has the lowest probability of injury of any SUV it has ever tested,” Tesla said in a statement. “In fact, of all the cars NHTSA has ever tested, Model X’s overall probability of injury was second only to Model S.”

The Model S is Tesla’s luxury four-door sedan.

The Model X gets 5 stars from NHTSA for Overall Rating, Frontal Crash tests, Side Crash tests, and Rollover ratings, according to the NHTSA website.

Most SUVs fall a little short in the rollover resistance ratings because they typically have a higher center of gravity than cars.

The NHTSA rollover ratings are based not on a crash test, but on a “measurement … that determines how top-heavy a vehicle is,” NHTSA says on its website, “and the results of a driving maneuver that tests whether a vehicle is vulnerable to tipping” in a severe-maneuver situation.

“Getting top ratings in most NHTSA tests is not uncommon, except for the rollover rating for SUVs,” said Jake Fisher, director of auto testing at Consumer Reports. “The Model X aces this by having a low center of gravity, due to the weight of its battery pack and its location under the floor.”

The Model X is not highly rated overall by Consumer Reports; it is one of the lowest scoring SUVs in its category. The score is hurt by its poor reliability ratings. The price ranges from $81,300 to $134,300.

The Model S, on the other hand, is among CR’s top-rated ultra-luxury cars. The price ranges from $68,300 to $133,300.

Read the complete Tesla Model X road test.