Tesla’s 1.74 Million FSD Count Includes One-Time Buyers, Not Just Monthly Subscribers

The headline number for Tesla’s software business might not mean what you think it does.

According to its Q3 2026 shareholder letter, Tesla now counts 1.74 million active Full Self-Driving subscriptions. That figure represents a 67% jump compared to a year ago. However, a footnote clarifies that this total includes both people paying monthly and owners who bought the software upfront. This specific counting method was adopted to align with the terms of the 2025 CEO Performance Award. Because the award requires 10 million active subscriptions for the company to reach a major milestone, including long-time one-time buyers in the current total significantly boosts the apparent growth rate.

This distinction matters because Tesla stopped selling FSD as a one-time purchase in February 2026. New customers in the US now pay a $99 monthly fee, while those who paid up to $15,000 previously remain in the active count as long as their cars are in use. The only exclusion is free trials. Despite the large total, Tesla has not disclosed how many of those 1.74 million users are currently paying the monthly fee. When the company reported 1.28 million in April, this ambiguity was already noted, and it remains unresolved six months later.

The report highlights a 75% attach rate for new deliveries in North America during the quarter, which is a nearly twenty-point increase from the previous period. Tesla suggests this indicates FSD is driving demand in available markets. However, the letter does not define exactly how this rate is calculated. It is unclear whether introductory offers count or if the metric reflects long-term retention. Unlike the active subscription count, which excludes trials, there is no explicit statement about whether the attach rate does the same.

Contextually, this metric is part of a 12-tranche compensation package for Elon Musk, which runs until 2035. The package includes operational goals like 20 million vehicle deliveries and one million Optimus robots. As of June 30, Tesla only considered the delivery target probable. To reach the 10 million FSD milestone at the current pace of adding 260,000 net subscriptions per quarter, it would take approximately eight years. If the growth slows to the previous annual average of 700,000, the timeline extends to roughly twelve years.

Tesla’s approach mirrors its reporting on cumulative deliveries, which now stands at 10.2 million. That figure also includes unsupervised Robotaxis in commercial operation to align with the pay package. While counting upfront buyers is not inherently incorrect since those cars have the software, the presentation of the total as a subscription count raises questions about transparency. The board established the definition, and the company has not yet provided a breakdown of monthly payers versus lifetime owners.