James Corden has reportedly been warned about his driving on The Late Late Show.

According to the Mail on Sunday, the show's host has earned a "rebuke from his CBS bosses" for driving with his hands off the wheel and while using his mobile in his programme's segment, Carpool Karaoke.

The part of the show has proved to be a great success and has seen James drive alongside the likes of Stevie Wonder , Rod Stewart , Mariah Carey and Justin Bieber as they sing their hearts out to their favourite tunes.

(Image: CBS) (Image: CBS)

But bosses are said to be concerned the Californian transport police might have something to say if he doesn't calm it down slightly behind the wheel.

One of James' best Carpool moments by far surely came when he started weeping while Stevie sang to the Gavin and Stacey star's wife down the phone.

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(Image: CBS)

The sequence got off to a comical start with the TV presenter asking the driver whether he is OK to drive, but at this point viewers can’t see that the driver is in fact Stevie, who is of course blind.

A very amused Stevie then does his best impression of a British accent, as he tries to persuade James he can drive.

The real hilarity begins when James tells him: “My wife won't really believe I am in the car with you today."

(Image: CBS)

Stevie quickly replies: “Do you want me to ring her?”

He then calls James’ wife Julia on speaker phone and sings: “I just called to tell you James loves you.” Awww.

Overwhelmed by it all, James starts to cry and his wife is also clearly very moved as she tells him she loves him as they hang up.

(Image: CBS)

The whole thing lasts 11 minutes and we’d really recommend you watch it all.

Mirror Celeb has contacted a representative of James Corden and CBS for comment.