Jeremy Clarkson, James May and Richard Hammond are set to leave The Grand Tour, bringing an end to a 20-year-long partnership.
The former Top Gear presenters have decided to move on from the show seven years after it was launched on Amazon's Prime Video, it is claimed.
An insider told the Sun that the 'surprising' decision 'very much marks the end of an era for the three presenters', who have worked together since 2003.
They added that although the show is one of the streaming platform's most watched shows 'the guys have made no bones about the fact they’re all advancing in years and they have lots of other projects to pursue.'
The source told the publication that the broadcasters 'felt like the time was right and wanted to go out on a high when the show remained popular'.
Despite their departures MailOnline understands the show itself might yet continue, with Prime Video exploring options on how to move forward without the trio - although it is believed the trio are not against new presenters being hired.
Jeremy Clarkson (right), Richard Hammond (centre) and James May (left) filmed during an episode of The Grand Tour: A Scandi Flick
The trio being filmed on a race track during The Grand Tour's eastern Europe special - Eurocrash
The group in a promotional photo for BBC's Top Gear, which they presented from 2003 to 2015
Fans of the show will still have some more helpings of The Grand Tour to look forward to - two special episodes which will follow Clarkson, May and Hammond to Mauritania and Zimbabwe are set to be released next year.
The trio also have other projects in the pipeline - Clarkson recently filmed a third season of Clarkson's Farm and a fourth is in the pipeline, while May has another set of Our Man In... travelogues to be released.
By moving on from the programme it would bring together an extremely successful association between Clarkson, aged 63, May, aged 60, and Hammond, aged 52, stretching back 20 years.
The group had shot to superstardom after taking over BBC's Top Gear, turning it from a niche car programme into one of the corporation's hottest properties and selling spin-offs around the world.
They dramatically left the programme in 2015 after Clarkson was sacked by the channel following a bust-up with producers, before returning on The Grand Tour in 2016.
Since then they have hosted 44 episodes of the series, which has taken them around the world on specials to Cambodia and Vietnam, Reunion and Madagascar, Scandinavia, and eastern Europe.
It comes weeks after their former bosses at the BBC announced Top Gear, which turned the trio into superstars, was being axed in the aftermath of a horrific crash involving presenter Andrew Flintoff.
The show's production has been halted since host Flintoff, 45, was taken to hospital in December 2022 after being badly hurt in an accident at the Top Gear test track at Dunsfold Aerodrome in Surrey.
Following the crash, the BBC announced that it would pause production on the show, co-presented by Take Me Out host Paddy McGuinness and automotive journalist Chris Harris, as it was felt it would be 'inappropriate', adding there would be a health and safety review.
McGuinness later thanked fans 'for the love' in a 'goodbye' message.
And after the BBC's announcement to 'rest' the show for the foreseeable future, Paddy posted a gallery of images on Instagram starting with a picture of the trio in white Top Gear outfits.
He wrote the caption: 'We were always going to be b*****s but we were your b******s.
'Thanks for all the love over the years folks, it was very much appreciated.'
Paddy McGuinness posted this image on Instagram of the trio in white Top Gear outfits
Top Gear host Paddy McGuinness has thanked fans 'for the love' after the BBC said the hit series will be off air for the 'foreseeable future'
Paddy McGuinness posted a series of images on his Instagram page as he thanked fans 'for the love'
The images were captioned 'We were always going to be b*****s but we were your b******s'
Flintoff is understood to have negotiated a £9million settlement with the BBC for two years' loss of earnings as a result of the crash.
And sources have told The Telegraph that the corporation would not be able to secure insurance cover for the kind of stunts featured in past series.
'The insurance costs are through the roof,' an insider told the newspaper. 'They were already pretty high, but after the payout…no-one is going to want to do that, unless they're charging more than the BBC can pay.'
MailOnline understands that insurance costs were not a factor in the BBC's decision to pause the show.
In a statement earlier this week, the BBC said: 'Given the exceptional circumstances, the BBC has decided to rest the UK show for the foreseeable future.
'The BBC remains committed to Freddie, Chris and Paddy who have been at the heart of the show's renaissance since 2019, and we're excited about new projects being developed with each of them.
'We will have more to say in the near future on this. We know resting the show will be disappointing news for fans, but it is the right thing to do.
'All other Top Gear activity remains unaffected by this hiatus including international formats, digital, magazines and licensing.'