Tesla Reports 1.74 Million FSD Users, But Methodology Raises Questions

Tesla’s valuation hinges on its autonomous driving capabilities, yet the metric used to gauge its progress appears designed to satisfy a specific executive incentive plan rather than reflect current cash flow. The company disclosed this week that it has reached 1.74 million active Full Self-Driving (FSD) subscriptions, a figure representing a 67% increase over the past year.

A footnote in the Q3 2026 shareholder letter clarifies how this total is calculated. The count aligns with the terms of the 2025 CEO Performance Award, meaning it aggregates both monthly recurring subscriptions and vehicles that purchased the software upfront. Consequently, owners who paid as much as $15,000 for the feature years ago are still tallied as active subscribers, provided their vehicles remain in operation. The only exclusion from this count is free trial users.

This accounting method is significant because hitting 10 million active FSD subscriptions is a key milestone for Elon Musk to earn his 2025 pay package. Tesla ceased selling FSD as a one-time purchase in February 2026, shifting new customers to a $99 monthly model in the United States. However, the company has not yet specified how many of the 1.74 million total are currently paying the monthly fee. This ambiguity follows an April report that cited 1.28 million users under the same definition, leaving a gap in clarity regarding the actual revenue-generating base.

The letter also highlights a 75% attach rate for new North American deliveries in Q3, which Tesla attributes to a nearly 20-point sequential increase. The company suggests that FSD availability is driving demand in those markets. However, the definition of this attach rate is not provided. It remains unclear whether introductory offers are included or if the metric accounts for customer retention after the initial months, a distinction that could significantly alter the interpretation of the data.

The path to the 10-million-user target remains distant. Tesla added 260,000 net FSD subscriptions in Q3, marking its strongest quarterly performance to date. Even at this accelerated pace, reaching 10 million would take approximately eight years. If the growth rate reverts to the previous annual average of roughly 700,000 additions, the timeline extends to nearly a decade. The compensation plan, which includes other operational targets like 20 million cumulative deliveries and 1 million Optimus robots, runs until 2035. As of June 30, Tesla considered only the delivery milestone to be probable.

Critics of the reporting note that while counting upfront buyers is not inherently incorrect, labeling them as 'subscriptions' may obscure the true health of the recurring revenue stream. The board approved the definition, and the CEO’s compensation depends on it, yet the company has not released data on how many North American buyers who initiated subscriptions in Q2 are still paying today. This lack of retention data leaves investors without a clear picture of whether the 75% attach rate translates into sustained business value.