A Tesla owner known as Keith has logged 73,240 miles (117,868 km) on FSD Supervised since last November — roughly 400 self-driving miles every single day. That figure, highlighted by Tesla commentator Sawyer Merritt, puts Keith in a category entirely his own among known FSD users and offers a rare real-world stress test of the system at scale.
To put 400 miles a day in perspective: that is roughly the distance from Los Angeles to San Francisco, driven on FSD, every single day, for six consecutive months. Keith is not a fleet operator or a test engineer — he is an individual owner whose accumulated mileage now rivals what many drivers put on a car over a decade.
Keith is not alone in pushing FSD to its limits, but he is in rare company. According to verified reports, another user named David Moss completed a 2,732-mile coast-to-coast trip in December 2025 using FSD 14.2 with zero interventions, and separately crossed 10,000 consecutive intervention-free miles — a figure Business Insider independently verified. A separate user, identified as 'The Wis,' has driven 17,090 of his Model Y's 17,139 total miles on FSD, a 99.7% engagement rate. Keith's 73,240-mile total dwarfs both benchmarks by a wide margin.
The broader FSD fleet context matters here too. Tesla's FSD Supervised fleet collectively surpassed 10 billion cumulative miles in early May 2026, logging an average of 28.8 million miles per day across the entire fleet — double the daily rate recorded just a couple of months prior. Tesla's own safety data shows vehicles operating with FSD Supervised engaged record one major collision every 5.3 million miles, compared to the U.S. national average of one every 660,000 miles. Keith's usage, sustained over months rather than a single road trip, represents the kind of longitudinal real-world data that controlled tests cannot easily replicate.
What makes the number genuinely striking is not just the volume but the consistency. Hitting 400 miles a day requires FSD to perform reliably across commutes, highway runs, urban routes, and everything in between — repeatedly, without the novelty factor that tends to inflate short-term engagement. Whether Keith's experience reflects the system's current ceiling or simply what dedicated daily use looks like is an open question, but either way, the odometer is still turning.
Marcus covers Tesla's software releases, FSD rollouts, and OTA changes. Background in automotive engineering. Based in Austin.
Sources verified at publish time. Spotted an inaccuracy? Email editorial@basenor.com.
