OK, I stand corrected that their profits don't come solely from carbon credits. I was misinformed. However, your stats are also wrong:
If a new administration delivers more lax environmental rules for automakers, one of Tesla's key profit-drivers could go away.
insideevs.com
Tesla’s profits fell 23% in 2024, but carbon credit sales up 54% to $2.76B. As emissions rules tighten, credits remain a key revenue driver.
carboncredits.com
My numbers are not wrong lol, the articles cited used different numbers from Tesla's income statement. I compared regulatory credit to gross profit, and they compared it to net income. Since you weren't aware of that, let me explain what these numbers actually mean to you lol.
Gross profits are the profits that Tesla can't easily change outside of market factors because they're directly related to Tesla's production of goods. Meanwhile, net income is also made up of R&D, SG&A, restructuring, and more that can vary a lot, easily be changed, or include one time expenses. It also includes interest income, which has nothing to do with their core business.
In my opinion, comparing carbon credits to gross profit is more realistic because carbon credits are part of the total revenue and these regulatory credits can depend directly on how many cars they sell (and also the competition). Net income might tell you what Tesla's paycheck is but it won't even tell you what they bring into the bank because of financing activities. It's also something that all companies will play with to keep positive... Companies occasionally make layoffs, close locations, or cut unnecessary costs for instance.
Furthermore, net income is fundamentally smaller and so comparing anything to it makes the number look big, which is why these articles chose it. If you compared Cybertruck revenue to net income, you could make it sound like Cybertrucks are one of the main reasons Tesla is profitable but it's just not true.
Then I referenced 2025 numbers:
https://ir.tesla.com/
Q1 regulatory credits = $595M
Q1 gross profit = $3.15B
Q2 regulatory credits = $439M
Q2 gross profit = $3.88B
Last year, Tesla's regulatory credits were $442 and $890M in Q1/Q2 for comparison.