Tesla has confirmed key performance specifications for its long-delayed all-electric Semi truck, including an 800-kilowatt powertrain and two range configurations, as the company prepares to begin mass production later this year.
Tesla quietly updated its official Semi webpage with final production details, a change first reported by Electrek, without issuing a formal announcement. The update confirms that the Class 8 electric truck will be offered in Standard Range and Long Range variants, though Tesla has not disclosed battery capacity figures.
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For the Standard Range version, Tesla lists a driving range of 325 miles at a gross vehicle weight of 82,000 pounds (37.2 tonnes), a tare weight of under 20,000 pounds (9.07 tonnes), and energy consumption of 1.7 kWh per mile. The truck uses three independent electric motors on the rear axles with a combined output of 800 kW, supports the Megawatt Charging System (MCS), and can recharge to 60% in 30 minutes. It also features an electric power take-off system with up to 25 kW of output.
The Long Range version is rated for up to 500 miles (805 kilometres) of driving range, with a tare weight of about 23,000 pounds (10.43 tonnes) and the same energy consumption figure of 1.7 kWh per mile. It shares the same three-motor, 800 kW drivetrain but supports a higher peak charging speed of up to 1.2 megawatts, while maintaining the same 60% charge time and ePTO capability.
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The specifications apply to the revised Semi design unveiled at Tesla’s annual general meeting last November, which features an updated chassis, improved aerodynamics and redesigned headlights. Tesla said in its 2026 annual report that production and first customer deliveries will begin this year, with manufacturing taking place at a new facility in Nevada.
Although Tesla has not published payload figures, estimates can be derived from the disclosed weights. Based on U.S. regulations allowing electric Class 8 trucks to operate at up to 82,000 pounds, analysts estimate a payload capacity of roughly 20 to 21 tonnes, depending on configuration and trailer weight.
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Tesla has previously demonstrated a fully loaded Semi completing a 500-mile trip in 2022, reinforcing expectations that the Long Range variant uses a battery pack approaching 900 kWh, though the company has not confirmed this.
The Semi’s development has been marked by repeated delays. Originally unveiled in 2017 and slated for production in 2019, the truck entered limited production in October 2022. To date, only a small number of vehicles have been delivered, most notably to PepsiCo, which operates several units in California, alongside trucks used internally by Tesla.
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Pricing remains officially undisclosed. Tesla initially cited expected prices of $150,000 for the base model and $180,000 for the long-range version in 2017. More recently, the Los Angeles Times reported, citing government documents, that the Semi could be priced at around $260,000 for the Standard Range version and $300,000 for the Long Range model, though Tesla has not confirmed those figures.
Tesla has also signalled interest in the European market, having showcased the Semi at the IAA Transportation show in Hanover in 2024, as regulators consider raising permissible weight limits for electric trucks across the region.
