A young NYPD cop was killed in a fiery car crash along with her passenger early Sunday on the Upper West Side, possibly as a result of speeding, according to authorities and law-enforcement sources.

Officer Kimberly Lajara was flying south along the Henry Hudson Parkway around 3:45 a.m. when her 2016 Mercedes Benz hopped a median near West 98th Street and slammed into a tree, cops and sources said.

The Benz burst into flames, leaving both the 24-year-old Staten Island cop and her male passenger, Oscar Monegro, 32, dead at the scene, according to police.

The flames were so fierce that the two were “pretty badly burned” and “unrecognizable” at first, police sources said.

Investigators traced the car back to Lajara because the car was registered in her name, and her purse was found among its charred shell.

“Rest In Peace Police Officer Lajara,” tweeted Staten Island’s 121st Precinct, for which she worked. “You will be missed by your entire 121 Precinct Family.”

The cause of the crash officially remains under investigation, but sources said that it appears Lajara was speeding when she lost control.

The mangled mess of twisted metal left behind in the aftermath left onlookers horrified.

“I’ve never seen anything like that in my freaking life — a car mangled like that, destroyed,” said Paul Vella, 57. “It’s unbelievable. … It’s sad.”

Additional reporting by Aaron Feis