Choosing the right Class 8 truck is a critical decision for any fleet manager focused on long-haul operations. In 2025, the market offers a wide range of highly efficient, technologically advanced, and driver-friendly options. Whether you're prioritizing uptime, fuel savings, or transitioning to electric models, this guide breaks down the 10 best long-haul trucks available in the U.S. today, each with the specs and features that matter most.
1. Freightliner Cascadia (2025)
- Engine/Powertrain: Detroit DD15 Gen 5, up to 505 hp, DT12 automated transmission
- Fuel Efficiency / Range: 10.5% better fuel economy than previous models
- Driver Comfort & Safety: Spacious sleeper, adaptive cruise control, active braking via Detroit Assurance
- Reliability & Service: Detroit Connect with remote diagnostics and over-the-air updates
- Best For: Coast-to-coast fleets prioritizing fuel economy, uptime, and nationwide support
The Cascadia remains a fleet favorite thanks to its proven fuel savings, best-in-class telematics, and unmatched service network—ideal for operators focused on performance and total cost of ownership.
2. Peterbilt 579 UltraLoft
- Engine/Powertrain: PACCAR MX-13, 510 hp, 1,850 lb-ft torque, 12-speed automated transmission
- Fuel Efficiency / Range: Up to 7% improvement over the previous generation
- Driver Comfort & Safety: Quiet (~66 dBA) cab, high-roof sleeper, digital dash, predictive cruise
- Reliability & Service: Backed by Peterbilt’s extensive dealer network and proven durability
- Best For: Fleets focused on driver comfort and long-haul performance
The 579 UltraLoft blends rugged reliability with long-haul driver comfort, making it a great option for fleets emphasizing retention and vehicle longevity.
3. Kenworth T680 Next Gen
- Engine/Powertrain: PACCAR MX-13 or optional Cummins X15, up to 510 hp
- Fuel Efficiency / Range: 6% more efficient than the prior T680
- Driver Comfort & Safety: Upgraded cab materials, digital display, lane-keeping assist
- Reliability & Service: TruckTech+ remote diagnostics and strong resale value
- Best For: Mixed-use long-haul fleets seeking fuel savings and driver satisfaction
With its advanced aerodynamics, refined cab, and trusted powertrains, the T680 is a versatile and future-ready choice for regional and national hauls.
4. Volvo VNL 860
- Engine/Powertrain: Volvo D13 Turbo Compound, up to 500 hp, I-Shift AMT
- Fuel Efficiency / Range: ~8% improvement via waste heat recovery
- Driver Comfort & Safety: 70 cu-ft sleeper, smart cruise, Volvo Active Driver Assist 2.0
- Reliability & Service: Strong service network and built-in telematics for uptime
- Best For: Fleets prioritizing safety, comfort, and advanced powertrain efficiency
The VNL 860 stands out for its driver-first design and cutting-edge engine tech, built to handle cross-country hauls with comfort and consistency.
5. International LT Series
- Engine/Powertrain: S13 Integrated 13L or optional Cummins X15, up to 605 hp
- Fuel Efficiency / Range: About 5% more efficient with the new S13 engine
- Driver Comfort & Safety: DriverFirst™ cab, ergonomic controls, GPS-based predictive cruise
- Reliability & Service: OnCommand® diagnostics and nationwide dealer coverage
- Best For: Fleets needing a balance of power, efficiency, and tech
A smart, adaptable workhorse with excellent diagnostics and driver ergonomics, the LT is a dependable fleet option that balances innovation with value.
6. Mack Anthem
- Engine/Powertrain: Mack MP8 13L engine, 445–505 hp, mDRIVE 12-speed AMT
- Fuel Efficiency / Range: Up to 11 MPG with optional HE+ Energy Recovery Package
- Driver Comfort & Safety: Roomy sleeper, updated dash, optional lane assist, and mitigation
- Reliability & Service: GuardDog® Connect telematics and rugged build for uptime
- Best For: Heavy-haul fleets needing durability and highway efficiency
Mack’s Anthem delivers classic toughness with modern fuel-saving tech, offering a solid balance for long-haul operators with heavier cargo needs.
7. Western Star 57X
- Engine/Powertrain: Detroit DD15 or DD16, up to 600 hp, DT12 AMT
- Fuel Efficiency / Range: ~5.8% improvement over outgoing model
- Driver Comfort & Safety: Plush sleeper with digital dash, Detroit Assurance 5.0 safety suite
- Reliability & Service: Built for durability with reinforced aluminum cab
- Best For: Premium long-haul operations and heavy loads over long distances
The 57X is Western Star’s modern take on premium trucking—ideal for fleet owners or operators who want strength, space, and smart safety.
8. Tesla Semi (Not Yet Released)
- Engine/Powertrain: Tri-motor electric drive, central seating configuration
- Fuel Efficiency / Range: ~500-mile electric range, <2 kWh/mi energy use
- Driver Comfort & Safety: Clean, quiet cab with advanced visibility and safety systems
- Reliability & Service: Fewer moving parts, low maintenance; requires Megacharger access
- Best For: Dedicated high-traffic lanes with established charging infrastructure
The Tesla Semi offers zero-emission hauling at scale, with fast charging and lower maintenance, best suited for fleets that can support its charging needs. It is worth noting that Tesla expects to start producing these in late 2025 with delivery ramping up in 2026.
9. Freightliner eCascadia
- Engine/Powertrain: Dual electric motors powered by 438 kWh battery
- Fuel Efficiency / Range: ~230 miles per charge, 80% charge in 90 minutes
- Driver Comfort & Safety: Quiet cab, same spacious sleeper as Cascadia, Detroit Assurance
- Reliability & Service: Ideal for predictable routes with reduced maintenance costs
- Best For: Zero-emission regional hauls, port work, and short-line deliveries
Built on the trusted Cascadia platform, the eCascadia is a dependable EV solution for regional fleets aiming to reduce operating emissions.
Final Thoughts
The long-haul trucking landscape is evolving quickly, and 2025 brings more choices than ever. Diesel stalwarts like the Freightliner Cascadia and Kenworth T680 offer unmatched support and efficiency, while electric and hydrogen models like the Tesla Semi and Nikola Tre promise long-term cost savings and emissions reductions. The smartest fleets will take a hybrid approach—leveraging dependable diesel where it fits, and piloting zero-emission trucks on suitable lanes. By aligning your fleet’s operational needs with the right vehicles, you can maximize uptime, reduce costs, and prepare for what’s next in freight.
