Jeremy Renner says he had to be treated “like a child” on set as injuries from his horrific snowplough accident can still leave him exhausted.

The 53-year-old actor said he faced severe limitations when he returned to work on the film, Mayor of Kingstown, as his body was still recovering from the accident.

Early last year, Renner suffered blunt chest trauma and orthopaedic injuries after attempting to help his nephew with a car issue.

He told the Los Angeles Times newspaper: “They have to treat me like I’m a child actor. The mayor of Kingstown is now like a 14-year-old.

“They go, ‘And action!’ And I was out.

“We discovered they worked me too hard, too many hours, too many days in a row.

“What I’m willing to do is everything, but what I’m able to do is a different thing.”

Renner also revealed that Mayor of Kingstown co-creator Hugh Dillion asked his mother for permission for him to return to set and the actor was unsure if he even wanted to.

He said: “To try to create some truth and then get the audience to believe it, while I’m just trying to learn to walk again, to put one foot in front of the other and not get up in agony. I’m doing all these things to find my footing on the planet again.

Jeremy Renner insists that "pain is progress" for him as he continues to recover from his snowplough accident.

“The idea of going into a fictional world — I have to be honest with you, I had to really consider, Is this something I really want to do?”

However, Renner insisted the accident has left him with a more positive outlook on life.

He said: “It took the collective of all these people. That’s the power of love. It’s a slow burn. Man, I tell you…

“I’m alive. I’m walking through life with a smile on my face. And there’s nothing that’s ever going to change that. Nothing. It’s impossible for me to have a bad day.”