Warren Buffett has never bought Tesla stock. Berkshire Hathaway has never bought Tesla stock. That alone is not proof of anything — Buffett has skipped plenty of winners — but he has also written and said enough about how he picks a company that you can run Tesla through his own checklist and see where it lands. We did that two ways: first by argument, then by running Tesla through a screener that computes every number from actual SEC filings and market data rather than letting a model estimate one.
Start with what Buffett calls a moat: a durable reason competitors can't take a company's customers or margins. Tesla's early moat was a head start on batteries, software and charging infrastructure. That head start is narrowing. Chinese manufacturer BYD now outsells Tesla globally on total vehicle volume, and legacy automakers, along with a widening field of Chinese EV makers, have closed most of the technology gap that used to separate Tesla from everyone else. Tesla's own gross margin shows it: 25.6% in 2021 down to roughly 18% every year since — a moat that is not holding its price.
Then there's management. Buffett has one famous, half-joking test: he wants a business good enough that "it can be run by an idiot, because sooner or later it will be." The point isn't literal — it's that Buffett distrusts businesses built around the irreplaceability of one person. Tesla is the opposite of that test. Elon Musk is simultaneously running Tesla, SpaceX, X (formerly Twitter) and xAI, and has spent stretches of the past few years absorbed in U.S. political activity as well.
The scorecard: 16 filters, computed from filings
Arguing about Tesla in prose risks smuggling in a number nobody checked. So this piece was also run through a Buffett-style filter tool that pulls every figure from Tesla's actual SEC filings and market data — the model never sources a number itself, and anything that can't be computed prints UNDOCUMENTED instead of a guess. Below is the exact output, as of the numbers pulled for this piece, with TSLA at $354.08 and a market cap of $1,398.5B:
| # | Filter | Reading | Verdict |
|---|---|---|---|
| 1 | Understandable business | Auto Manufacturers | JUDGMENT |
| 2 | Durable moat (gross margin) | 25.6% → 18.2% → 17.9% → 18.0% | FAIL |
| 3 | Consistent earnings power | $12,583M → $14,999M → $7,130M → $3,794M | FAIL |
| 4 | ROE without heavy debt | 28.1% → 23.9% → 9.8% → 4.6% | FAIL |
| 5 | Owner-oriented management | 3,164.0M → 3,751.0M shares | FAIL |
| 6 | Low capital intensity | 8.8% → 9.2% → 11.6% → 9.0% | CONTESTED |
| 7 | Sensible price (FCF yield) | 0.4% | FAIL |
| 8 | Margin of safety | 10.2% to mean analyst target | CONTESTED |
| 9 | Pricing power | 25.6% → 18.0% | FAIL |
| 10 | Price vs 200-day average | -11.38% | FAIL |
| 11 | Net cash vs price | $1,794M (0.1% of market cap) | CONTESTED |
| 12 | Price to tangible book | 17.32x ($21.53/share) | FAIL |
| 13 | Liquidation floor (NCAV) | $3.65/share vs $354.08 price | FAIL |
| 14 | Return on assets | 15.3% → 14.1% → 5.8% → 2.8% | FAIL |
| 15 | Times interest earned | 16.6x | PASS |
| 16 | Current ratio | 2.16 | PASS |
Score: 2 clear passes of 15 scored filters (1 is a qualitative judgment call, not scored). Tesla clears solvency — it can cover its interest payments 16.6 times over and its short-term bills twice over. It fails almost everything Buffett actually prices a business on: a shrinking, unstable margin, earnings that fell from $15.0B to $3.8B over two years, return on equity that dropped from 28% to under 5%, a stock trading at over 17 times tangible book with almost no free-cash-flow yield to show for it, and a liquidation value of $3.65 a share against a $354 price. Filter 8's "margin of safety" reading is not a real valuation — it is the average of Wall Street analysts' own price targets, which is a poll of opinion, not intrinsic value, and Buffett explicitly rejects using one to substitute for the other.
None of this means Tesla is a bad company, or that its stock can't keep working for people who bought it on a different thesis — growth investing, momentum, a bet on autonomy or robotics paying off on a much longer horizon. It means something narrower and more falsifiable: measured against filters built from Buffett's own stated criteria, computed the same way for any company, Tesla does not currently clear the bar.
What Buffett has actually said about Musk — on the record
Buffett has weighed in on Musk directly at least twice, on the record, years apart. In April 2019, asked about Musk by Yahoo Finance, Buffett said: "I think he has room for improvement, and he would say the same thing." He also called Musk "a remarkable guy," but added that he saw no need for Musk to communicate as much as he does on Twitter, remarking that some people "have a talent for interesting quotes and others have a little bit more of a blocker up there that says 'this could get me into problems.'" The comment came as Musk was fighting SEC contempt charges tied to a tweet about taking Tesla private.
More recently, in his final letter to shareholders as Berkshire Hathaway's CEO — published days after Tesla shareholders voted on November 6, 2025 to approve a compensation package for Musk that could be worth roughly $1 trillion — Buffett wrote about runaway CEO pay without naming anyone: "Envy and greed walk hand in hand. And what consultant ever recommended a serious cut in CEO compensation or board payments?" He didn't name Musk or Tesla, but multiple outlets covering the letter noted the timing made the target hard to miss.
Musk does not appear to have publicly responded to either comment. That's worth noting on its own: whatever else is true about Musk's relationship with public criticism, Buffett's specific critiques of his conduct and his pay don't appear to have drawn a public reply.
Berkshire's real EV bet
Buffett did make one real bet on electric vehicles, for what it's worth: Berkshire Hathaway held a large stake in BYD, the Chinese automaker, starting in 2008. Berkshire spent much of 2022 through 2024 steadily selling that position down. Even the one EV company Buffett actually bought, he didn't hold forever.
This is an analysis applying Warren Buffett's own publicly stated investment framework, and a filter tool built from it, to publicly available information about Tesla. It is commentary, not investment advice. Stock prices, filings-based figures and analyst targets all move; verify any figure here against a live source before acting on it.