Quick Summary: Tesla Semi Official Specs — Standard Range vs Long Range
- Standard Range: 325-mile range @ 82,000 lb GVW · <20,000 lb curb weight · 1.7 kWh/mile · 60% charge in 30 min (MCS)
- Long Range: 500-mile range @ 82,000 lb GVW · 23,000 lb curb weight · 1.7 kWh/mile · 1.2 MW peak charging · 60% in 30 min
- Powertrain: Tri-motor (3 independent rear motors) on both variants — performance identical; range is the differentiator
- Charging: MCS 3.2 standard · ePTO up to 25 kW for auxiliary equipment (refrigeration, hydraulics)
- Design: Day cab only — optimized for regional/hub-and-spoke logistics; no sleeper variant at launch
- Production: Dedicated 1.7M sq ft Nevada Gigafactory; mass production confirmed by Elon Musk on X
Tesla has released comprehensive production specifications for the Semi ahead of its mass production launch at the dedicated Nevada Gigafactory. After years of pilot programs with PepsiCo, Frito-Lay, and other partners, the numbers are now official. The data addresses the questions fleet managers have been waiting to answer: how much does it weigh, how far does it go, and how fast does it charge. The answers are compelling — and they are backed by CARB's official powertrain certification confirming 822 kWh (Long Range) and 548 kWh (Standard Range) battery capacities.
Standard Range vs Long Range: Full Spec Comparison
| Specification | Standard Range | Long Range |
|---|---|---|
| Range (@ 82,000 lb GVW) | 325 miles | 500 miles |
| Curb weight | <20,000 lb | 23,000 lb |
| Weight difference | Baseline | ~3,000 lb heavier (larger battery pack) |
| Energy consumption | 1.7 kWh/mile | 1.7 kWh/mile (identical) |
| Powertrain | Tri-motor (3 independent rear motors) | Tri-motor (3 independent rear motors) — identical |
| Charge type | MCS 3.2 | MCS 3.2 |
| Peak charging speed | Up to 60% range in 30 min | 1.2 MW (1,200 kW) peak · 60% in 30 min |
| ePTO | Up to 25 kW | Up to 25 kW |
| Best for | Port drayage, warehouse-to-store, regional loops — payload-critical routes | Inter-city transport, longer regional hauls, routes without frequent charging stops |
| Confirmed battery (CARB) | 548 kWh | 822 kWh |
Why Curb Weight Is the Critical Number for Fleet Operators
| Weight Factor | Standard Range (<20,000 lb) | Long Range (23,000 lb) |
|---|---|---|
| vs. diesel day cab | Competitive — neutralizes the "heavy battery" criticism; payload penalty minimal | ~3,000 lb heavier than Standard; manageable with 2,000 lb EV weight allowance in some jurisdictions |
| Payload implication | Maximum payload capacity — ideal for weight-sensitive freight | Slightly reduced payload vs. Standard; offset by 175-mile range advantage |
| TCO impact | Lower upfront cost + maximum payload = best TCO for high-frequency regional routes | Higher upfront cost offset by fewer charging stops and broader route coverage |
Megawatt Charging System (MCS): The Operational Game-Changer
| MCS Feature | Detail | Fleet Implication |
|---|---|---|
| Peak speed (Long Range) | 1.2 MW (1,200 kW) | Fastest commercial EV charging available — essential for a battery of this size |
| 60% in 30 minutes | Both variants — 60% range recovery in 30 min | Aligns with mandatory driver break times — no schedule overhaul required; charge while driver rests |
| ePTO (25 kW) | Electric Power Take Off — powers auxiliary equipment from the battery | Refrigeration units, hydraulic systems, liftgates — no diesel APU required; eliminates idling |
| vs. passenger Supercharger | MCS is significantly more powerful than Tesla's V3 Supercharger (250 kW max) | Purpose-built for commercial trucking — not a scaled-up passenger solution |
Design Philosophy: Day Cab Focus and the Hub-and-Spoke Strategy
| Design Choice | Detail | Strategic Rationale |
|---|---|---|
| Day cab only | No sleeper cabin at launch — optimized for regional routes that return to base | Simplifies mass production ramp; avoids sleeper interior complexity; targets the most electrification-ready segment |
| Hub-and-spoke target | Port drayage, warehouse-to-store, regional distribution — same model as PepsiCo/Frito-Lay pilots | Predictable routes + return-to-base charging = highest utilization rate; proven by pilot data |
| Side storage compartments | Large side storage teased in recent videos — practical utility focus | Addresses driver workflow needs without sleeper complexity |
| Long-haul future | Sleeper variant not yet announced — cross-country trucking remains diesel territory for now | Megacharger network must scale further before long-haul electrification is viable at scale |
TCO Analysis: Why the Numbers Work Against Diesel
| TCO Factor | Tesla Semi Advantage |
|---|---|
| Energy cost stability | Electricity prices are more stable than diesel — reduces fuel cost volatility for fleet operators modeling multi-year budgets |
| Maintenance | Tri-motor electric powertrain has fewer moving parts than diesel — lower maintenance cost and reduced downtime over vehicle lifespan |
| Efficiency | 1.7 kWh/mile at 82,000 lb — exceptional for a Class 8 vehicle; aerodynamic design and powertrain engineering validated by CARB certification data |
| Upfront cost | Higher than diesel at purchase — offset by lower operating costs over lifespan; see confirmed pricing breakdown |
| EV weight allowance | Some jurisdictions grant 2,000 lb additional GVW for EVs — partially offsets Long Range's 3,000 lb weight premium vs. Standard |
Conclusion
Key Takeaways
- Standard Range: 325 mi · <20,000 lb · 1.7 kWh/mi — the payload-optimized workhorse for high-frequency regional routes
- Long Range: 500 mi · 23,000 lb · 1.2 MW peak charging — the range-optimized option for inter-city and extended regional hauls
- MCS 3.2 charging: 60% in 30 minutes on both variants — aligns with mandatory driver breaks; no schedule overhaul required
- ePTO (25 kW): Powers refrigeration, hydraulics, liftgates without diesel APU — eliminates idling costs
- Battery confirmed: CARB filing confirms 822 kWh (LR) / 548 kWh (SR) — range claims are engineering reality, not marketing
- In production now: Semi already hauling Cybercab production units — the truck is not a concept; it is working
The Tesla Semi's specifications are not aspirational — they are production numbers backed by regulatory certification and validated by real-world pilot operations. The combination of competitive curb weight, 1.7 kWh/mile efficiency, and 30-minute charging that aligns with mandatory driver breaks removes the three most common objections to electric trucking. For regional logistics, the case for the Semi is now a spreadsheet exercise, not a leap of faith.
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About the Author: Rio is a Tesla technology analyst and automotive writer at Tesery, covering Tesla Semi, electric trucking, and the electrification of commercial freight. Tesery is a leading provider of premium Tesla accessories, helping owners get the most from their vehicles.
