Introducing the Tesla Semi Once More

Remember the Tesla Semi? This heavy-duty truck, first unveiled in concept back in 2017, has finally hit the production line as of April 2026—almost a decade after its debut. Recently, Tesla hosted an event to showcase the Semi, signaling to customers and investors that the long wait is over.

The event took place at Tesla’s new Semi factory adjacent to Gigafactory Nevada, where the company claims it can produce 50,000 trucks annually, or about 1,000 each week. The gathering aimed to announce a mix of new and returning customers for the Semi, including major players like PepsiCo, US Foods, DHL, WattEV, ABF, Einride, IMC, and OK Produce. (Many of these names were leaked prior to the event by a drone-flying YouTuber over the Sparks, Nevada facility.) The first deliveries of the truck commenced this week.

However, several key details were still missing that could shed light on the lengthy wait and the Semi’s future. Tesla did not disclose order numbers or provide an updated price for the Semi, which is rumored to be around $290,000 for the long-range version. As with many recent Tesla events, this one left some important questions unanswered.

Production was initially slated to begin in 2019 but faced delays due to various factors, including the COVID-19 pandemic and a global parts shortage. Tesla managed to deliver a few trucks to PepsiCo in 2022, but those were essentially hand-built prototypes.

Back in 2017, Tesla advertised a starting price of $150,000 for the 300-mile version and $180,000 for the 500-mile variant. While the company never officially updated these figures until now, reports earlier this year indicated that Tesla was quoting customers $290,000 for the 500-mile range model.

Over the past three years, Tesla has refined the Semi’s design, reducing its weight by nearly 1,000 pounds and establishing a dedicated factory next to its Gigafactory in Sparks. The final production design was revealed in February 2026, confirming two trims: a Standard Range truck with 325 miles at a full 82,000-pound gross combination weight, and a Long Range version boasting 500 miles of range. In April, Tesla announced that the first Semi had rolled off the production line, marking the start of volume production for this long-awaited truck.

Although Tesla CEO Elon Musk was absent from the event—attending a state dinner in Washington, DC—he sent a prerecorded message praising the Semi as “the funnest truck to drive.” He stated, “This is really going to be a revolutionary truck that is capable of carrying the heaviest loads over very long distances. With ease of recharge, Megacharger that’s capable of a megawatt of power. This is really going to be a phenomenal truck.”

Much of the event focused on the hardware and engineering behind the truck. Tesla’s director of Semi Truck Engineering, Dan Priestley, highlighted that the 500-mile range is based on fully loaded trucks rather than tests with reduced payloads. Tesla’s vice president of Engineering, Lars Moravy, mentioned that a Semi carrying a lighter load of around 60,000 pounds could potentially achieve about 600 miles. The lower-range truck will be lighter and adaptable for various applications, allowing for multiple Semi configurations rather than relying solely on the long-range model.

Tesla asserts that the Semi, with its lower energy costs and fewer maintenance parts, is cheaper to operate than diesel trucks. This claim is particularly relevant given that diesel prices have surged to historic highs, exceeding $6.50 a gallon in the US—almost double what they were a year ago. The fully loaded truck now consumes about 1,700 Wh/mile, down from an initial target of 2,000 Wh/mile. These efficiency improvements enable Tesla to utilize a smaller, lighter, and more affordable battery while maintaining the same range.

The Semi is equipped with Tesla’s in-house 4680 battery cells, replacing the previously used 2170 cells. This change, along with vehicle efficiency enhancements, results in a lower-mass, lower-kWh battery without compromising range.

The powertrain and drive axle have also undergone significant redesigns since the Semi’s initial reveal. The truck now features a new steel-caged rotor instead of the earlier carbon-fiber-sleeved rotor, a bar-wound stator shared with the Cybertruck, and a redesigned drive axle that is approximately 80 kilograms lighter. Tesla has streamlined the lubrication system by eliminating the three separate oils used in the original drive axle, opting for a single oil for the motor and gearbox, which Moravy claims should last over 250,000 miles.

The hydraulic steering has been replaced with redundant electric power steering, which Tesla says offers greater precision and responsiveness. Additionally, the truck’s enhanced wheel cut provides a turning radius nearly comparable to that of a Model Y, making tight urban and loading-dock maneuvers easier, according to Priestley.

The Semi also shares components with the newly road-ready Cybercab, utilizing the same indirect thermal system, including pumps, compressors, and heat exchangers. This system eliminates the need for long refrigerant lines running to the front of the vehicle and can transfer heat between the cabin, battery, and drive unit to enhance efficiency.

Over the past year, Tesla has been building a customer base for the Semi, including companies like PepsiCo, DHL, and ABF Freight. Autonomous trucking startup Einride announced a 500-truck order in August, while IMC Logistics recently confirmed a purchase of 50 Semis for California drayage. Additionally, Tesla was selected by a coalition of major cargo-owning shippers to supply 2,500 trucks for zero-emission freight shipping in California.

The challenge now lies in meeting this demand and delivering trucks to customers promptly. Many freight operators have been waiting years for Tesla to fulfill its promise of electric trucks, and any further delays could harm the company’s reputation.

Charging presents another hurdle, as the Semi requires high power levels to recharge its massive 822 kWh battery pack. Tesla has begun rolling out its Megacharger system, capable of delivering up to 1.2 Megawatts of power per stall. By the end of the year, Tesla plans to have over 30 Semi charging stations with more than 200 megawatt-capable posts, while also supporting customer-installed overnight charging. During the event, Priestley and Moravy monitored a Semi charging at one of the new Megawatt chargers, demonstrating a 3-60 percent charge in about 30 minutes.

Tesla is positioning the Semi as an integrated fleet product, not just another electric truck. The company claims its existing fleet has achieved over 98 percent uptime, compared to the industry average of 90-95 percent for diesel-powered class 8 trucks. Tesla is also developing dedicated Semi service, mobile support, remote diagnostics, and over-the-air updates.

Executives showcased several innovations aimed at enhancing the driving experience, including driver profiles that follow operators from truck to truck and range estimates that dynamically adjust based on changing payloads.

While Tesla did not disclose order numbers or starting prices, Musk mentioned that the “waiting list is significant” and encouraged potential customers to place orders. The company emphasized the Semi’s ability to achieve a lower total cost of ownership compared to diesel, factoring in lower energy costs, reduced maintenance, and less exposure to diesel price fluctuations.

“You know, volatility in the oil market and the diesel market goes up and down,” Moravy noted. “But typically, we’ve seen in the history of the last 20 years, electricity is pretty flat. And wouldn’t it be great to have a flat cost in your shipping rates?”