Tesla (NASDAQ: TSLA) delivered a Q2 that was simultaneously its best and most expensive in recent memory. Revenue of $28.2B beat estimates by over $2B and rose 26% year-over-year, fueled by record vehicle deliveries of 480,126 units. The cost of that growth was steep. GAAP operating income collapsed 57% to $398M, a 1.4% margin that was the lowest in years. Non-GAAP diluted EPS of $0.33 missed the $0.52 consensus by a wide margin. Free cash flow swung to negative $1.1B as capital expenditures more than doubled sequentially to $5.8B.
The headline revenue beat was real. Automotive revenue rose 23% to $20.5B, driven by the 25% jump in deliveries. Services & Other revenue surged 50% to a record $4.6B. Energy storage deployments rebounded to 13.5 GWh, the second-best quarter ever. But the quality of that revenue shifted in ways that pressured margins. Automotive regulatory credits fell to $146M from $439M a year ago, a $293M headwind. While the company cited lower average cost per vehicle from reduced inbound duties, lower average selling prices (including mix effects) more than offset that gain. Total GAAP gross margin slipped to 16.8% from 17.2% a year ago, and automotive gross margin excluding credits fell to 16.3% from 15.0%.
The operating income collapse is the quarter's defining tension. Operating expenses jumped 47% to $4.35B, driven by AI and other R&D projects, stock-based compensation (including the 2025 CEO Performance Award), and SG&A. R&D alone rose to $2.37B from $1.59B a year ago. The company is in its "largest and most exciting period of investment," as it put it, and the numbers bear that out. The gap between revenue growth and profit generation is widening. Operating margin of 1.4% compares to 4.1% a year ago and 4.2% last quarter. Adjusted EBITDA margin fell to 11.6% from 15.1%.
The capex surge is the other story that deserves more attention than the revenue beat. Capital spending of $5.8B was more than double the $2.4B in Q2 2025 and $2.5B last quarter. That drove free cash flow to negative $1.1B, the first negative quarter since Q1 2024. Cash and investments still sit at a comfortable $43.5B, but the trajectory is worth watching. The company is funding Cybercab production at Gigafactory Texas, the Tesla Semi factory in Nevada, Megafactory Texas, AI compute expansion (Cortex 2), a semiconductor fab in Austin, and Optimus production lines in Fremont. That is a lot of simultaneous capital commitments for a business generating $1.1B in GAAP net income.
The miss on EPS relative to estimates is partly explained by the GAAP-to-non-GAAP bridge. Non-GAAP net income of $1.15B was down 17% YoY, and the diluted share count of 3.54B continues to creep higher. But the real story is that operating leverage is moving in the wrong direction. Revenue grew $5.7B year-over-year, yet operating income fell $525M. That is a structural dynamic, not a seasonal one. The company's guidance language about expecting "hardware-related profits to be accompanied by an acceleration of AI, software and fleet-based profits" reads as aspirational rather than imminent.
Energy storage was a bright spot, with deployments of 13.5 GWh up 41% YoY and record TTM deployments. Services & Other achieved record gross profit of $648M at a 14% margin. These segments are becoming material contributors, but they are not yet large enough to offset the pressure in automotive. The energy warranty charge from a vendor cell issue was a $1B+ headwind to operating income, though the company did not quantify it precisely.
What to watch next: the pace of Cybercab and Optimus commercialization, and whether the capex surge starts to generate measurable returns. The company began production of Cybercab and engineering test drives on public roads, and employee rides at Gigafactory Texas. Optimus production lines are being installed in Fremont after decommissioning Model S and X lines. These are real milestones, but they come with real costs. The market will need to see a path back to operating margins above 5% before the investment thesis shifts from narrative to numbers.