The Reality of Supervised Autonomy

How effective is Tesla’s widely discussed Full Self-Driving (FSD) feature? After conducting thorough testing on the roads surrounding Ann Arbor, Michigan, and in the dense urban environment of San Francisco, the results are impressive—but with significant caveats. While the system operates smoothly during most driving scenarios, the designation "Supervised" is critical. Tesla explicitly mandates that drivers remain vigilant; the system will automatically disconnect if it detects a lack of attention, proving that while highly advanced, the technology is far from infallible.


Real-World Performance and Technical Glitches

During our experience with two 2026 Model Y vehicles, the software demonstrated remarkable capability, navigating complex traffic circles and suburban streets with ease. However, perfection remained elusive. We encountered several notable errors, ranging from minor inconveniences to more pressing safety concerns:

  • Navigation errors: In Ann Arbor, the vehicle failed to identify a driveway obscured by foliage, opting for a neighbor’s entrance instead. It also missed a speed bump hidden in shadows.
  • Intersection hazards: In San Francisco, the car attempted to steer into an opposing turn lane at a four-way intersection and executed a left turn far too slowly, creating an awkward situation with oncoming traffic.

The Burden of Micromanagement

Ultimately, these unpredictable "hiccups" meant our test drivers could never fully relax. The need to constantly supervise the system—ready to seize control via the brakes or steering wheel at a moment's notice—often felt more exhausting than manual driving. Rather than a "set-it-and-forget-it" convenience feature, FSD (Supervised) often functions more like a high-tech novelty that requires constant human oversight.


Is It Worth the Price?

Given the level of engagement required, the financial value of the system becomes a central question. Fortunately, Tesla has moved away from the steep $8,000 one-time cost, introducing a subscription model priced at $99 per month. This shift is arguably the system's most valuable aspect. It allows owners to experiment with the technology at a lower price point and decide for themselves if the convenience outweighs the effort of managing the car’s occasional mistakes.