The incident is said to have occurred at a Norwegian naval base.
James May was reportedly hospitalised after crashing a car into a wall at 75mph for a stunt on the hit Amazon Prime series The Grand Tour.
He and his co-hosts Jeremy Clarkson and Richard Hammond were said to have been taking turns driving rally cars at the time of the accident.
The Sun reports that May, 59, lost control of a Mitsubishi Lancer Eco 8 and "smashed his head quite hard in the impact and was bloodied by it".
"He was complaining about pain in his back and neck. He broke at least one rib and was quite shaken by it," a source told the outlet.
The star was given the all-clear a day later, the paper also reports.
"It looked extremely worrying at first," the source told the publication.
"Jeremy and Richard were concerned about their mate and the paramedics swooped in quickly."
The motoring trio, who first started working together on BBC show Top Gear in 2003, were said to be driving through a Norwegian naval base at the time as part of a new Grand Tour episode when the accident happened.
May has since reassured fans that he is alright.
https://twitter.com/MrJamesMay/status/1558354498497691653
In response to a tweet from Yujiro Taniyama, a guide who appeared in the James May: Our Man in Japan series, May wrote: "The gaijin made a cock-up and destroyed honourable Japanese car. Deep shame, sumimassen."
Meanwhile, in a later post, he said: "Thank you for all your kind comments and funny jokes re my crash, but it was a while back, not that bad, and I’m perfectly OK.
"Apologies to Evo fans for binning the VIII."
https://twitter.com/MrJamesMay/status/1558388791798370305
