Elon Musk intensified his criticism of Trump White House trade adviser Peter Navarro on Tuesday, calling him a “moron” and “dumber than a sack of bricks” in a post on X, as reported by The New York Post.
The Tesla CEO’s comments followed Navarro’s appearance on CNBC Monday, during which Navarro claimed that Musk “is not a car manufacturer” but rather “a car assembler.”

Musk responded forcefully, defending Tesla’s manufacturing credentials and challenging Navarro’s assertions.
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“Navarro is truly a moron. What he says here is demonstrably false,” Musk wrote.
Navarro is truly a moron. What he says here is demonstrably false.
— Elon Musk (@elonmusk) April 8, 2025
In another post, he added, “Tesla has the most American-made cars. Navarro is dumber than a sack of bricks.”
Tesla has the most American-made cars. Navarro is dumber than a sack of bricks. @IfindRetards @RealPNavarro https://t.co/gECgtZt5Sc
— Elon Musk (@elonmusk) April 8, 2025
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Musk went on to explain Tesla’s domestic production dominance, stating, “By any definition whatsoever, Tesla is the most vertically integrated auto manufacturer in America with the highest percentage of US content.”
He also referenced Navarro’s fictional character “Ron Vara,” saying, “Navarro should ask the fake expert he invented, Ron Vara.”
By any definition whatsoever, Tesla is the most vertically integrated auto manufacturer in America with the highest percentage of US content.
Navarro should ask the fake expert he invented, Ron Vara.
— Elon Musk (@elonmusk) April 8, 2025
The public feud escalated over the weekend, beginning with Musk’s reaction to the latest round of tariffs announced last week. The policy moves, which reportedly involved significant input from Navarro, appeared to provoke Musk’s ire.
On Saturday, Musk took to X to question Navarro’s qualifications, writing that his Harvard education “is a bad thing, not a good thing.”
A PhD in Econ from Harvard is a bad thing, not a good thing.
Results in the ego/brains>>1 problem.
— Elon Musk (@elonmusk) April 5, 2025
That post prompted Navarro to fire back, accusing Musk of trying to protect his own business interests by opposing Trump’s tariff approach.
Navarro, a key economic advisor in the Trump administration, played a major role in shaping the United States’ trade policies, including the implementation of tariffs targeting foreign manufacturing.
The recent measures have reignited debates over their impact on American companies, including electric vehicle manufacturers like Tesla.

Musk, who oversees not just Tesla but also SpaceX and other ventures, has increasingly used social media to voice opposition to federal policies he believes hurt U.S. innovation and manufacturing competitiveness.
Tesla’s vehicles have consistently topped rankings for American-made content and domestic assembly.
As of now, neither Navarro nor representatives for the Trump team have issued any formal response to Musk’s latest string of comments.
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