The actor posted a video on his Instagram page where the special moment with his mother has been shared.

In the video, Dwayne and his children making the 'shocking' revelation to  Ata Johnson.

Dwayne wrote: "This one felt good.Surprised my mom with a new car for Christmas today."

" She was shocked. She got a few good ugly cries in. Then once her grand babies joined her inside the car. She was overcome with pure joy joy," he said.

" Hell, even Hobbs, my dog wanted to peep the whip with his new Christmas chicken," the actor said.

" I’m so grateful I can do this kinda stuff for my mom, who’s had one helluva life. I don’t take any of it for granted.Neither does she," Dwayne said.