What Ever Happened to the Tesla Semi?

TL;DR

The Tesla Semi is nearly a decade behind schedule, economically unviable without subsidies, and unlikely to significantly impact Tesla's business.

Key Points

• 1.Musk's 2017 promises were sweeping but remain largely unmet. He claimed 500-mile highway range at max weight, $1.26/mile operating costs, autonomous convoy driving, and a Mega Charger network at 7¢/kWh — none of which have materialized at scale.
• 2.Production has been perpetually delayed, with only a few hundred units delivered. Announced for 2019, the Semi didn't see its first delivery until December 2022 (to PepsiCo), with only a few dozen units delivered through 2025 across pilot customers including Walmart, Costco, and DHL.
• 3.Real-world efficiency data raises range concerns. DHL's 2024 test recorded 1.72 kWh/mile at 75,000 lb — but average speeds were likely well below the 60 mph Musk specified, suggesting highway range could be meaningfully worse than the promised 500 miles.
• 4.The promised Mega Charger network doesn't exist, and the economics are unfavorable without it. Fleet operators must install their own chargers and buy grid electricity at ~14¢/kWh, making fuel cost ~24¢/mile — savings wiped out because the Semi costs ~$290,000 vs. $100–150,000 for a diesel truck, doubling financing costs.
• 5.The Tesla Semi is only commercially viable in California due to a $120,000 state subsidy. California's HVIP program cuts the effective price to ~$160,000, and higher diesel taxes there make the math work — but the truck is uneconomical in virtually every other U.S. market.
• 6.Even under optimistic assumptions, the Semi won't move the needle for Tesla. The new Nevada factory targets 50,000 units/year, but realistic California demand may be ~10,000 units, generating ~$2.9 billion revenue against Tesla's $95 billion total — a negligible contribution after nearly a decade of delays.