Performance & Range
Tesla Semi Range Specs| Long Range version | 500 miles |
| At max GCW (82,000 lbs) | 500 miles |
| Energy consumption (official) | 1.7 kWh/mile |
| Real-world avg (pilot data) | 1.64 kWh/mile |
| Battery cell | 4680 (1M mile rated) |
| 0–60 mph (unloaded) | 5 seconds |
| 0–60 mph (80,000 lbs) | 20 seconds |
| Top speed | 70 mph |
| Drag coefficient | 0.40 Cd |
| Weight vs previous version | ~1,000 lbs lighter |
| Peak charge rate | 1.2 MW |
| Charge to 70% (approx) | ~30 minutes |
| Charger type | Megacharger (Semi-dedicated) |
| Electrical architecture | 48-volt |
| Steering system | Fully electric assist |
| Gross Combined Weight (GCW) | 82,000 lbs |
| Tractor Length (Long Range) | ~245 in (20.4 ft) |
| Tractor Length (Standard Range) | ~220 in (18.3 ft) |
| Overall Width | ~102 in (8.5 ft) |
| Cab Height (High Roof) | ~162 in (13.5 ft) |
| Cab Height (Low Roof) | ~138 in (11.5 ft) |
| Wheelbase (Long Range) | Extended — 3 battery packs |
| Curb Weight (Long Range) | ~23,000 lbs |
| Curb Weight (Standard Range) | <20,000 lbs |
| Max Payload (Standard Range) | ~48,000 lbs |
| Max Payload (Long Range) | ~45,000 lbs |
| Cab configuration | Day cab, central driver seat |
| Mirrors | Camera-based system |
| Actuators | Cybertruck-spec |
| Class | Class 8 |
Tesla Semi vs Diesel — Head to Head
Tesla Semi vs Diesel| Metric | Tesla Semi | Diesel Class 8 |
|---|---|---|
| Energy per mile | 1.64 kWh | ~5.5 kWh equiv. |
| Estimated fuel cost/mile | ~$0.25 | ~$0.75–$0.90 |
| Tailpipe emissions | Zero | High (CO₂, NOx, particulates) |
| 0–60 mph unloaded | 5 seconds | ~15–20 seconds |
| Pilot program uptime | 95% | Varies by fleet |
| Service turnaround | 80% within 24 hours | Days (dealer dependent) |
| Drag coefficient | 0.40 Cd | ~0.65–0.70 Cd |
Real-World Pilot Efficiency Data
Tesla Semi kWh per mile — real worldTesla Semi Fleet Orders — 2026 Tracker
Updated May 2026
icon = 10 trucks · Data from public announcements · Updated as new orders are confirmed icon = 10 trucks= 370 trucks icon = 10 trucks= 40 trucks icon = 10 trucks= 20 trucksPilot underway icon = 10 trucks = 20 trucksTesla Semi Incentives & Rebate Programs
Federal · State · Port ProgramsAbout the Tesla Semi
Tesla Semi Range — What 500 Miles Actually Means
The Tesla Semi Long Range achieves 500 miles on a single charge at a full 82,000 lb gross combined weight — the maximum legal limit for U.S. freight operations. That's not a light-load figure or a lab result. It's 500 miles hauling real freight at highway speeds. For most regional and long-haul routes, a single charge covers the full trip.
Tesla Semi Charging — The 1.2MW Megacharger
Tesla built a dedicated charging network for the Semi called Megachargers, capable of delivering up to 1.2 megawatts of power. That means the Semi can recover roughly 70% of its charge in about 30 minutes — fast enough to fit within a federally mandated driver rest break. The first public Semi Megacharger opened in Los Angeles in 2026, with more locations planned across major freight corridors.
Tesla Semi vs Diesel — The Economics
A diesel Class 8 truck consumes the energy equivalent of roughly 5.5 kWh per mile. The Tesla Semi averages 1.64 kWh per mile in real-world pilot operations — about three times more efficient. At current electricity rates versus diesel prices, fleet operators are reporting estimated fuel savings of $0.50–$0.65 per mile. Over 500,000 miles of operation, that adds up to over $300,000 in fuel savings per truck.
Tesla Semi Dimensions — Length, Width, Height & Wheelbase
The Tesla Semi Long Range measures approximately 245 inches (20.4 ft) in length, 102 inches (8.5 ft) wide, and 162 inches (13.5 ft) tall in high-roof configuration. The Standard Range is shorter at approximately 220 inches (18.3 ft) due to the absence of the third battery pack. Both variants are Class 8 trucks rated to 82,000 lbs gross combination weight. The low-roof option stands at approximately 138 inches (11.5 ft) — designed for tankers, flatbeds, and local delivery routes where overhead clearance is a concern.
Tesla Semi Technical Specifications — Complete Reference
Key Tesla Semi technical specifications for 2026: tri-motor rear-wheel drive with one efficiency axle and one torque axle (dual motors), 4680 cylindrical cells with NMCA chemistry, 48V electrical architecture, ethernet communications, fully electric steering assist, MCS 3.2 charging at up to 1,200 kW (1.2 MW), regenerative braking with load-sensing regen, air spring suspension, and an optional 25 kW electric power take-off (ePTO) for trailer refrigeration units. The truck shares autopilot hardware with Tesla's passenger vehicle fleet.
Key Technical Upgrades on the 2026 Tesla Semi
- Fully electric steering assist for improved driver feel and reduced fatigue
- Cybertruck-derived actuators for added durability and strength
- 48-volt electrical architecture throughout the vehicle
- 4680 battery cells rated for 1 million miles of use
- Camera-based system replacing traditional mirrors
- Drag coefficient of 0.40 Cd — below that of a Bugatti Veyron
- Approximately 1,000 lbs lighter than the previous version