Tesla’s Automotive Margin Improved. Why Did Operating Profit Fall 56%?

Automotive revenue fell 3.0% year over year to $20.560B, while deliveries declined 2.1%, from 497,099 to 486,532 vehicles. Yet automotive gross margin increased from 17.0% to 18.5%. Sales mix and costs can improve margins even when vehicle sales are not growing. [1] [2] [3]

The improvement was not solely a measure of manufacturing efficiency. According to the 10-Q, tariff refunds reduced automotive sales cost of revenue by $0.260B. Regulatory credit revenue fell from $0.417B to $0.113B. Refunds supported gross profit through lower costs, while the decline in credit revenue worked in the opposite direction. [1] [2] [3]

Tesla’s update reported its highest passenger-vehicle backlog in four years and said battery availability constrained vehicle volume growth. In prepared remarks, CEO Elon Musk said demand exceeded production, while CFO Vaibhav Taneja described efforts to raise output. These are management’s assessments of demand, not recognized revenue. Investors should assess delivery growth and automotive profitability without assuming that tariff-refund benefits will recur. [1] [2] [3]

Energy storage deployments increased 9.6%, from 12.5GWh to 13.7GWh, while energy revenue fell 15.6%, from $3.415B to $2.881B. Higher deployment volume did not translate into higher revenue this quarter. [1] [2]

Tesla attributed the revenue decline partly to tariff refunds for certain Megapack customers, lower average selling prices per Megapack and fewer Powerwall deployments. Energy gross margin nevertheless increased from 31.4% to 33.1%. Separately, tariff refunds reduced energy cost of revenue by $0.526B. Customer refunds reduced revenue, while Tesla’s tariff recoveries reduced costs; these are different accounting effects. [2] [1]

The CFO also attributed the sequential energy-margin improvement to warranty cost reductions related to reimbursement from a cell supplier, alongside tariff refunds. Investors should distinguish these adjustments from recurring operating performance. [1] [2] [3]

In prepared remarks, Musk said Megapacks for 2027 were nearly sold out. This was management’s description of future demand, not revenue already recognized or deliveries completed. The 50GWh annual capacity planned for Megafactory Texas in the update likewise should not be read as actual output. Investors should track the conversion of orders into revenue and cash. [1] [2] [3]

Services and other revenue increased 32.5% year over year to $4.605B. Growth was driven mainly by used vehicle sales, maintenance outside warranty coverage, collision repairs and paid Supercharging. Gross profit in this category also increased sequentially. [2] [1] [3]

Active FSD Subscriptions increased from 1.04M to 1.74M. Despite its name, Tesla’s metric includes both upfront purchases and monthly subscriptions, while excluding free trials. It therefore does not represent 1.74M customers all paying a monthly subscription fee. [1] [2] [3]

In prepared remarks, the CFO said more than 75% of North American deliveries included a sign-up for a paid FSD subscription at delivery. This measures adoption on new deliveries and has a different denominator from the total Active FSD count. A sign-up does not establish subsequent retention or recognized revenue per customer. The 10-Q says FSD subscriptions contributed to automotive sales revenue; FSD is not disclosed as a separate component of services and other revenue. FSD (Supervised) requires active driver supervision. [2] [1] [3]

Tesla’s update said Robotaxi rides using Cybercabs began in Austin on September 3. The launch marks an operational step, rather than proof of profitability at scale. Assessing the business requires data on fleet size, paid usage, operating costs and local approvals. FSD adoption figures should not be read as a count of customers using driverless Robotaxis. [1] [2] [3]

GAAP gross profit increased $0.440B, from $5.054B to $5.494B. Total operating expenses rose $1.346B, from $3.430B to $4.776B. Operating income consequently fell $0.906B, or 55.8%, from $1.624B to $0.718B. Higher gross profit was more than offset by the increase in operating expenses. [1] [2]

The year-ago $3.430B of operating expenses comprised $1.630B of R&D, $1.562B of SG&A and $0.238B of restructuring and other expenses. This quarter’s total comprised $2.761B of R&D and $2.015B of SG&A, with no restructuring and other expenses. R&D and SG&A alone increased $1.584B; the $0.238B decline in restructuring costs partly offset that increase. [2]

R&D increased about 69% year over year. Tesla attributed the increase to super intelligence (SI), Optimus, silicon development, battery and new vehicle programs, along with higher share-based compensation. SG&A included $0.275B of share-based compensation related to the 2025 CEO Performance Award. Higher development spending does not itself establish future sales or profitability, and compensation remains a cost when assessing earnings. [2] [1]

In the Terafab Q&A, Musk discussed capital equipment spending in the tens of billions of dollars through early 2028, while saying the allocation of costs between Tesla and SpaceX remained to be determined. This was not a finalized Tesla-only budget or Q3 spending. Progress at a research fab also differs from commercial production and proven profitability. Investors need to see whether development spending and new facilities lead to products that generate recurring operating profit. [2] [1] [3]