Tesla's FSD Headline Figure: A Metric Tailored for Executive Pay

Tesla's latest shareholder letter reports a significant jump in its Full Self-Driving (FSD) subscriber count, but the headline figure is calculated in a way that directly aligns with Elon Musk's performance-based compensation package. The company disclosed it now has 1.74 million active FSD subscriptions, a 67% increase from the previous year. A footnote in the Q3 2026 letter clarifies that this number is calculated to comply with the "2025 CEO Performance Award" and "includes both upfront payment and monthly subscriptions." This means customers who purchased the software outright for as much as $15,000 are counted alongside those who pay the current $99 monthly fee.

The method of calculating this metric is significant because reaching 10 million active FSD subscriptions is a milestone Elon Musk must hit to earn his 2025 pay package. The same approach is used for Tesla's cumulative vehicle deliveries, which now stand at 10.2 million and include "any unsupervised Robotaxis placed into commercial operation" to meet a 20 million vehicle milestone. Tesla ceased selling FSD as a one-time purchase on February 14, 2026, and now only offers it as a monthly subscription for new customers, though all previous one-time purchasers remain in the active subscription count as long as their vehicle is active. Free trials are excluded from this total.

Beyond the total number of subscribers, Tesla also claims that over 75% of new vehicle deliveries in North America included an FSD subscription during the third quarter, describing this as "a nearly twenty percentage point sequential increase." The company suggested that "FSD is driving demand in markets where it is available." However, the shareholder letter does not clarify if this figure includes subscriptions started with introductory offers or how many of those customers are still paying after a few months. The company also does not specify how many of the 1.74 million total subscribers are on a recurring monthly payment plan.

The road to the 10 million subscription milestone for Musk's compensation plan is long. The plan includes 12 tranches, each requiring both a market capitalization and an operational goal. The operational list includes 10 million active FSD subscriptions, 20 million vehicles delivered, 1 million Optimus robots, 1 million robotaxis in commercial operation, and specific adjusted EBITDA targets. As of June 30, 2026, Tesla considered only one of these operational milestones, the 20 million deliveries target, to be probable.

Tesla added 260,000 net FSD subscriptions during the third quarter, which was its strongest quarter to date. If the company were to maintain that pace, it would take approximately eight years to reach the 10 million target. However, at the rate seen over the last 12 months, which is about 700,000 new subscriptions per year, the timeline extends to closer to 12 years. The performance award itself remains active until 2035, providing ample time to reach the goal.

The definition of an "active subscription" is central to the issue. Counting customers who purchased the software outright is not incorrect, as those vehicles do have the software installed. The concern lies in presenting this combined total as a metric of momentum for a subscription-based business, especially when the definition was created to satisfy the conditions of a pay package rather than to provide investors with a clear picture of recurring revenue. This is now Tesla's primary software metric, and while it shows a high number of users, it obscures how many are on a monthly payment plan for a service that still requires driver supervision.

The more revealing figure is the 75% attach rate on new vehicle deliveries. If verified, a 75% take rate on a $99-a-month product would represent a substantial business. However, the company has not provided data on retention, such as how many customers who started a subscription in the second quarter are still paying in the fourth. The company has also not yet delivered unsupervised self-driving to the customers who purchased the software for that purpose.