Elon Musk has called President Donald Trump's trade adviser, Peter Navarro, a "moron" over comments he made about his electric vehicle firm, Tesla.
Musk - who is also a member of the Trump administration - also said Navarro was "dumber than a sack of bricks" in posts on his social media platform X.
It was in response to an interview Navarro gave in which he described Tesla as a "car assembler", rather than a manufacturer, because of its use of foreign-made parts.
Navarro was being interviewed about Trump's tariff policy and said he wanted to see such parts made in the US in the future instead.
Musk said the claims were "demonstrably false."
The BBC has asked the White House for comment.
Trump has in part justified his global wave of tariffs by saying he wants to revive manufacturing in the US.
This is an argument Navarro was expanding on during an appearance on CNBC on Monday.
"If you look at our auto industry, right, we're in assembly line for German engines and transmissions right now", he said.
"We're going to get to a place where America makes stuff again, real wages are going to be up, profits are going to be up".
Get the popcorn out:
I was reading somewhere that Novarra is supposedly responsible for getting Trump set on tariffs. He wrote a book some years on China that was very critical of the country; Jared Kushner (Trump’s son in law) brought it to Trump’s attention and this seems to have started the train of ‘thought’ in Trump. Among the peculiar accusations in the book were some by reputable source Ron Vara, which just happens to be an anagram of Novarra. So he has a history of fluid truth.
On Tuesday, the firm reported a 20% drop in automotive revenue in the first quarter of 2025, compared with the same period last year, while profits fell more than 70%.
Tesla brought in $19.3bn (£14.5bn) in total revenue in the quarter, down 9% year on year, according to the new numbers. That was less than the $21.1bn expected by analysts, and came as the company cut prices in a bid to woo buyers.
Musk said his "time allocation to Doge" would "drop significantly" starting next month. He would, he said, spend only one to two days per week on government matters "as long as the president would like me to do so and as long as it's useful".
Tesla has denied reports that it has contacted recruitment firms to launch a search for a replacement for Elon Musk as chief executive.
The Wall Street Journal reported on Wednesday that the electric car firm's board began looking for a successor to Mr Musk last month.
It said this was because of frustration around Mr Musk's focus on his job in US President Donald Trump's administration and Tesla's sinking share price.
However, in statement on Thursday, Tesla said the report was "absolutely false" while Mr Musk wrote on his social media platform X that the paper was "a discredit to journalism".
Tesla chair Robyn Denholm wrote on X, external: "There was a media report erroneously claiming that the Tesla Board had contacted recruitment firms to initiate a CEO search at the company."
"This is absolutely false (and this was communicated to the media before the report was published)."
She added: "The CEO of Tesla is Elon Musk and the board is highly confident in his ability to continue executing on the exciting growth plan ahead."
Elon Musk has criticised one of the signature policies of Donald Trump, marking a break from the US president who he helped to win re-election in 2024.
Last week, the US House of Representatives narrowly passed what Trump calls his "big, beautiful" bill, which includes multi-trillion dollar tax breaks and a pledge to increase defence spending. It will now head to the Senate.
Tech titan Musk told the BBC's US partner CBS News he was "disappointed" by the plan, which he felt "undermines" the work he did for the president on reducing spending.
Musk was enlisted as Trump's cost-cutting tsar - ending funds for US foreign aid among other projects - before announcing he would step back.
"I was disappointed to see the massive spending bill, frankly," Musk said in the interview with CBS Sunday Morning, a clip of which was released by the broadcaster before transmission.
He went on to argue that Trump's plan "increases the budget deficit, not just decreases it".
It is thought that the legislation could increase the deficit - or the difference between what the US government spends and the revenue that it receives - by about $600bn (£444bn) in the next fiscal year.
Furthermore, the bill "undermines the work that the Doge team is doing", Musk said, using the acronym of the cost-cutting advisory body the Department of Government Efficiency.
Referring to Trump's moniker for the legislation, Musk told CBS: "I think a bill can be big or beautiful. I don't know if it can be both."
Musk's intervention highlights the ongoing tension within Trump's Republican Party over the tax and spend plans, which faced an uneasy passage through the House due to opposition from different wings of the party.
Long a policy priority of Trump's, the legislation pledges to extend soon-to-expire tax cuts passed during his first administration in 2017, as well as provide an influx of money for defence spending and to fund the president's mass deportations.
The bill also proposes increasing to $4tn the debt ceiling - meaning the limit on the amount of money the government can borrow to pay its bills.
Musk's comments on the issue imply a growing distance from Trump, who he helped to propel back to the White House last year with donations of more than $250m.
They come after the billionaire recently pledged to step back from Doge. Musk had stated that he wanted to help the government cut $1tn in spending by cancelling contracts and reducing the government workforce.
As of April, Doge's website claims around $175bn has already been saved, but a BBC analysis of this figure shows it lacks some evidence.
Musk also said last week that he planned to do "a lot less" political spending in the future, and that he was committed to leading electric car company Tesla for another five years.
Tesla faced protests, boycotts and a drop in sales over Musk's work as the Doge chief, including his controversial efforts to lay off thousands of federal workers and curb foreign aid.
Musk defended his actions in his comments last week, saying: "I did what needed to be done." He and Trump previously justified the cuts as a matter of weeding out what they saw as fraud and abuse within federal spending.
And for those of you at home with your corporate-speak bingo cards, you can check-off 'offboarding':Get the popcorn out (again):
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Elon Musk 'disappointed' by Donald Trump's 'big, beautiful' tax bill
As the former Doge chief, Musk had worked to reduce government spending which he says this bill contradicts.www.bbc.co.uk
Elon Musk has said he is leaving the Trump administration after helping lead a tumultuous drive to shrink the size of US government that saw thousands of federal jobs axed.
In a post on his social media platform X, the world's richest man thanked Trump for the opportunity to help run the Department of Government Efficiency, known as Doge.
The White House began "offboarding" Musk as a special government employee on Wednesday night, the BBC understands.
His role was temporary and his exit is not unexpected, but it comes a day after Musk criticised the legislative centrepiece of Trump's agenda.
"As my scheduled time as a Special Government Employee comes to an end, I would like to thank President @realDonaldTrump for the opportunity to reduce wasteful spending," Musk wrote on X.
"The @DOGE mission will only strengthen over time as it becomes a way of life throughout the government."
The South African-born tech tycoon had been designated as a "special government employee" - allowing him to work a federal job for 130 days each year.
Measured from Trump's inauguration on 20 January, he would hit that limit towards the end of May.
But his departure comes a day after he said he was "disappointed" with Trump's budget bill, which proposes multi-trillion dollar tax breaks and a boost to defence spending.
However, BBC analysis on 23 April found that only $61.5bn of that amount was itemised, and evidence of how the savings were achieved was available for just $32.5bn.
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I wonder if Musk (who isn't stupid, whatever you think of him) is realising that DOGE is not going to achieve anything other than turmoil.
It's not fair to say they just ignored him. Some of them went to the trouble of getting a judge to tell him to do one.I think Musk thought (like many, many others) that he could do public politics like private business, and he simply doesn't understand just how difficult it is to enact meaningful change in the public sector. Many of the government departments have their own specific ways of doing things, and it takes a tremendous amount of effort to change that.
He probably went charging into things like the IRS, demanded huge savings and cutting everything in sight, and was simply ignored by everyone in the process.
I wonder if Musk (who isn't stupid, whatever you think of him) is realising that DOGE is not going to achieve anything other than turmoil. They are claiming $175Bn savings compared with the $2Trn original target. Of the claimed savings, according to the BBC, (see below) only about a third is documented. Even that sounds a lot, but it's less than 1% of US government annual spend. The truth will come out eventually.
https://www.bbc.co.uk/news/articles/c23vkd57471o
I don't think its so much he was ignored. The fact is that despite the right wing belief, there isn't actually a huge amount of government spending you can actually cut without taking the axe to large programmes that would require governments to make huge and unpopular changes - literally axing pensions or benefits, that kind of change. Everything else is just tinkering around the edges.I think Musk thought (like many, many others) that he could do public politics like private business, and he simply doesn't understand just how difficult it is to enact meaningful change in the public sector. Many of the government departments have their own specific ways of doing things, and it takes a tremendous amount of effort to change that.
He probably went charging into things like the IRS, demanded huge savings and cutting everything in sight, and was simply ignored by everyone in the process.
I'm trying to work out Musk.
In all honesty I suspect that with the amount of time he spends on social media, he's been sucked in by his own algorithms. At some point he'll have liked some Tweets or watched some videos about Trump or migration or Republicans or whatever, and then he's been fed and ever-increasing amount of related content.I'm trying to work out Musk.
By one measure he's just a small-state, low-tax, low-public-spending economic conservative.
I remember him being actually supportive of easier migration of skilled people between Europe and North America (both ways), which is actually the one sensible thing Musk has said in recent months and goes against the MAGA anti-migrant nonsense.
Having said that, why, then, does he get involved with far-right organisations like the AfD?
Is is simply because AfD is, of all the German parties, the most supporting of low-tax/low-spending or does he actually go along with all the far-right stuff? I'm not entirely sure to be honest.
Elon might find life interesting if he's done more than just give Stephen Miller's wife a new job (possibly at Space X going by an image on social media). There are wild rumours and speculation of Elon getting quite close...
Let's see how that plays out. I have to admit I was surprised Stephen had a wife, let alone one that wasn't more Aryan in appearance....
edit: Now there are photos circulating showing Elon with a nasty black eye. The plot thickens*.
* Could be totally unrelated, obviously. Maybe one of his many kids accidentally hit him.
In the UK, someone with access to that level of government information would be required to undergo Developed vetting, which includes drugs tests, does the US have any similar such processes?The New York Times is reporting yesterday that insiders say he's been taking ketamine daily (prescription doses for his uses are typically once a week or more usually once a fortnight), as well as ecstasy and shrooms. If true, that sort of concoction of drugs would eventually make anybody behave unpredictably.
Not necessarily! If you're an MP, you don't need the regular DV/eDV process to gain widespread access to UK top secret information, nor random drugs and alcohol tests.In the UK, someone with access to that level of government information would be required to undergo Developed vetting, which includes drugs tests, does the US have any similar such processes?
...I can imagine if you spent enough time walking around No 10 you'd become party to some classified information you probably shouldn't have...
Time to drop the really big bomb:@realDonaldTrump is in the Epstein files. That is the real reason they have not been made public. Have a nice day, DJT!
This breakup is even more spectacular than anyone could ever have imagined:
The only thing I didn't predict was that it would take this long to happen. Good spectator sport.The BBC are running a live page but have neglected to add that one in. Everything else so far has been a great read though, as you say spectacular.
Two of the nastiest people in the world tearing chunks out of each other in public, what's not to like?The only thing I didn't predict was that it would take this long to happen. Good spectator sport.
Musk's own AI disputes this:This breakup is even more spectacular than anyone could ever have imagined: