Tesla: FSD is 5% more energy efficient than human drivers

Tesla’s 2025 Impact Report, released the first week of July, includes a striking data point: across a sample of 65 million miles driven in 2025, FSD (Supervised) used less energy than the same distance driven manually—roughly a 5% advantage—per the report and coverage by Not a Tesla App and Sawyer Merritt on X.

What Tesla actually measured

Tesla says it sampled real-world 2025 driving data and compared trips with FSD engaged versus manual driving under similar conditions. The conclusion: a smoother style—optimized acceleration and speed control—cuts consumption and, by extension, emissions at the power-generation source.

The biggest gains concentrate in the 25–35 mph range, typical of urban and suburban traffic (EVtopcars).

Tied to v14 Lite and the HW3 fleet

The report lands as Tesla rolls out FSD v14 Lite for Hardware 3 in the U.S. and South Korea. If v14’s efficiency carries to older HW3, a larger share of the existing fleet could benefit without buying a new car.

Cybercab: the next leap

In the same document, Tesla projects the fully autonomous Cybercab—designed for ~6.1 mi/kWh (165 Wh/mi)—could avoid nearly twice as many emissions per mile as Model 3/Y, roughly a 10 percentage-point lead over human drivers (Not a Tesla App).

Broader report context

The 216-page report also puts avoided CO₂e from the Tesla fleet at 37 million metric tons in 2025 and details battery recycling and factory efficiency at sites like Giga Berlin. The FSD numbers are one piece of a wider argument: software and autonomy as levers for operational sustainability.

Teslarios is not affiliated with Tesla, Inc. Figures come from Tesla’s corporate report; they are not independent audit.