The tragic 4-year-old boy who was fatally struck by a car in Queens was autistic and had just gotten home from his older brother’s funeral when killed, heartbroken kin told The Post on Sunday.

“There’s nothing inside me. There’s nothing. I’m empty,’’ said Michael McDonald, the dad of little Domantea McDonald and 18-year-old Tysheem McDonald, who was shot and killed two weeks ago.

“I just came from burying my [older] son. [Domantea] was only here for a split second to see me. … He wasn’t supposed to leave the world like that,” the shattered dad said. 

Domantea was outside his uncle’s Jamaica home on 147th Street around 6 p.m. Saturday after returning from his big brother’s funeral when the tot suddenly broke away from his mother and ran into the street, where he was struck by a Toyota RAV4, family and cops said. 

The little boy’s mother chased after him and was struck in the foot, police said. The driver stayed on scene and has not been charged.

“Two in one month, it hurts,” said the dead brothers’ uncle, Maurice McDonald.

“We had just come back from mourning one, and the other one died.”

Immediately after the accident, Domantea was still conscious and wriggling on the ground, screaming for his mother, his father said. The dad said he tried to hold his little boy down and keep him stabilized while he waited for EMS workers to arrive. 

“They said don’t move him, so I was keeping him on the floor, trying to keep him calm. His eyes were wide open. He was trying to get up. We held him there for however long it took for the Fire Department to get here,” the dad recalled. 

“The fire truck came, and they told us, ‘Back away from him.’ The guy turned him to the side to check if he had any bruises, and Domantea saw his mother and wanted to go to her.”

Domantea then started crawling toward his mom, but after he went about 5 feet, he passed out and died on the pavement, his dad said. 

“I started bugging out. He wasn’t sleepy, but it looked like he was falling asleep. I said, ‘No, wake him up, wake him up, wake him up!’ ” the father recalled. 

“He wasn’t breathing. He died right there. He didn’t die in no hospital. He died right here. I watched him leave his body right here because they let him crawl.”

Police said the kid sustained “severe head trauma and internal injuries” and was pronounced dead at Long Island Jewish Medical Center.

The kid’s devastated father questioned why emergency responders allowed the kid to move and insisted his death could’ve been prevented. The FDNY said “life-saving operations began as we transported the patient to the hospital” and didn’t immediately comment on the dad’s claims.

“Domantea had special needs. He was the most wonderful soul in the world, the most wonderful boy anybody could want to meet,” the dad said. 

His older son, Tysheem, was shot and killed Aug. 7 in what cops suspect to be a gang-related hit, police sources said. 

“Tysheem lived in the streets. I accepted it. That was my son. I couldn’t tell him nothing. His mother couldn’t tell him, his uncles couldn’t tell him. He wanted to be his own man,” the dad said. 

“But he loved his little brother. He only met him a handful of times, and Domantea was very autistic, but when he would see Tysheem, he would go to him. He wouldn’t go to anybody else, but when he saw his big brother, he went to him.”

No arrests have been made in connection with Tysheem’s death. 

Rodrick Lewis, who lives next door to the family, was stunned by the tragedy. 

“The man just lost his older son two weeks ago, and now he loses his other son. Summer 2022, this was the summer a man lost two of his sons,” Lewis, 63, said. 

“One was killed, the other was hit by a car. That’s something he’ll take to his grave.”