Tesla Semi

Overview

The Tesla Semi re-engineers long-haul commercial transport around a dedicated 1,000-volt high-voltage architecture and a tri-motor electric powertrain adapted from Tesla’s high-output drive units. Configured in a 6×4 layout with dual driven rear axles, the tractor integrates an 822 kWh battery pack built from production 4680 cylindrical cells. Packaging the energy storage into three low-slung sub-assemblies nestled securely between the chassis frame rails drastically reduces the vehicle’s center of gravity while maintaining a 48,800-pound Gross Vehicle Weight Rating and an 82,000-pound maximum Gross Combined Weight. Aerodynamic exterior profiling combined with direct-drive motor efficiency delivers an energy consumption rate of approximately 1,700 watt-hours per mile, enabling an operational range of up to 500 miles under maximum legal freight load.

Thermal regulation and rapid turnaround are anchored by the Megawatt Charging System interface, engineered to support sustained charge rates between 750 kilowatts and 1.2 megawatts for a 0–60% replenishment cycle in 30 minutes. While high-volume coolant loops manage these intense DC charge currents and highway duty cycles, severe collision events have exposed significant multi-hour thermal runaway and containment hazards inherent to mega-scale battery systems. The electric cab provides a quiet acoustic environment free of diesel mechanical vibration, though real-world fleet evaluations have surfaced electrical and firmware instability, notably instrument display blanking and sudden power steering assist dropouts. Long-term commercial viability remains tightly coupled with software resolution of these control quirks and the expansion of dedicated megawatt-scale depot charging corridors.

Technical Specifications