Tesla's long-delayed heavy-duty electric truck, the Semi, has officially entered mass production, with the first customer deliveries commencing this week. Against a backdrop of declining sales and mounting pressure on its brand image, whether this product can fulfill its original promises carries enormous significance for Tesla Motors (TSLA).
On Thursday evening local time, Tesla held a delivery event at its dedicated Semi factory in Sparks, Nevada, announcing that a mix of new and existing customers—including PepsiCo, DHL, US Foods, WattEV, ABF, Einride, IMC and OK Produce—have joined the order list.
Musk stated that the Semi's waitlist is "quite substantial" and encouraged more customers to place orders, adding that "we are very excited."
Tesla claims the factory has an annual production capacity of 50,000 units, equivalent to 1,000 vehicles per week. On the technical front, Tesla released several figures that exceed its original targets: a range of 500 miles under full load and up to 600 miles with lighter payloads; energy consumption reduced by approximately 15% from the original design target to roughly 1,700 watt-hours per mile.
On Friday, Tesla Motors (TSLA) shares opened higher but closed down 1.54%.
After a decade of delays, the Semi officially enters mass production
The Tesla Semi first debuted as a concept vehicle in 2017 and underwent multiple delays before finally entering mass production in April 2026. The event was held at the dedicated Semi manufacturing facility adjacent to the Nevada Gigafactory, which Tesla says has the capacity to produce 50,000 units annually.
Ahead of the event, a YouTube creator flew a drone over the factory and leaked several customer names in advance. At the formal event, Tesla confirmed that PepsiCo, DHL, US Foods, WattEV, ABF, Einride, IMC and OK Produce have all been added to the customer list.
Among them, autonomous trucking startup Einride announced an order of 500 units last August; logistics company IMC said earlier this week it would purchase 50 units for port drayage operations in California; and on Monday, Tesla was also selected to supply 2,500 trucks to the "world's largest shipper alliance" for zero-emission freight operations in California.
Tesla did not disclose total order volume or starting prices, but Musk's remarks suggest demand is not lacking.
Engineering upgrades: greater efficiency, lighter batteries
The event devoted substantial time to the Semi's technical details.
Tesla Semi engineering director Dan Priestley emphasized that the 500-mile range figure came from fully loaded testing, not the lighter-load testing that yields increasing range as cargo decreases—setting it apart from the industry's customary calibration methods. Tesla engineering vice president Lars Moravy said that when payload drops to approximately 60,000 pounds, range can extend to about 600 miles.
On battery technology, the Semi abandoned the 2170 cells procured for earlier test versions in favor of Tesla's own 4680 cells. Tesla says that combined with vehicle-wide efficiency improvements, this change achieved reductions in both battery pack mass and capacity without sacrificing range, helping to control costs.
Vehicle energy consumption has dropped from the originally targeted 2,000 watt-hours per mile to approximately 1,700 watt-hours per mile, a reduction of about 15%. Tesla also introduced multiple range configurations to meet different operational scenarios, rather than relying solely on a single long-range version.
Advancing charging network buildout to hedge against diesel price volatility
The Semi carries a massive 822 kilowatt-hour battery pack, requiring higher-power charging infrastructure.
Tesla is pushing forward with its Megacharger network, with individual stalls capable of delivering up to 1.2 megawatts of power. At the event, Dan Priestley and Lars Moravy demonstrated in real time a Semi charging from 3% to 60% in approximately 30 minutes on a new megawatt-class charger.
Tesla says it will build more than 30 Semi charging stations by year-end, totaling over 200 megawatt-class charging stalls, while also supporting customers' self-built overnight charging solutions. The pace of charging network deployment will directly affect the practical operational feasibility for freight customers.
In terms of cost logic, Tesla positions the Semi as a low total-cost-of-ownership product, with core arguments including lower electricity costs, fewer maintenance parts, and exposure avoidance to diesel price volatility. Lars Moravy said at the event:
"Oil and diesel prices have historically been volatile. But over the past 20 years, electricity prices have remained basically stable. If you could lock in your transportation costs at a stable level, wouldn't that be better?"
Additionally, Tesla introduced features such as driver profile synchronization across vehicles and dynamic payload-based range prediction to improve fleet management efficiency.
Reputation repair and execution capability remain the biggest tests
Despite relatively positive demand signals, Tesla's core challenge lies in execution. Some freight customers have already waited years, and any further delivery delays will intensify doubts about the company's ability to deliver on its promises.
Tesla claims its existing Semi fleet has an uptime exceeding 98%, better than the diesel heavy truck industry average of 90% to 95%, and has built a dedicated service system around the Semi covering mobile service, remote diagnostics and OTA software updates.
However, these figures come from a limited early fleet, and whether they can be maintained after large-scale production remains to be verified.
Against a broader market backdrop, Tesla Motors (TSLA) is in a period of dual pressure on both brand image and sales data. As the company's first mass-produced product in the heavy commercial vehicle segment, the Semi's market performance will not only shape its expansion in this niche but also serve as an important reference for investors assessing Tesla's execution capability and product innovation momentum.
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