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  1. Home
  2. Verified Technologies for SmartWay and Clean Diesel
  3. SmartWay Technology
  4. For Trucks & School Buses

SmartWay Designated Tractors

Finding the right truck is critical to maximizing freight efficiency – using a SmartWay designated tractor and trailer can reduce fuel use by up to 20 percent 2,000 to 4,000 gallons of diesel per year!

  • Trailers
  • Tractors

SmartWay Tractors – in Both Sleeper and Day Cab Configurations

SmartWay tractors have been demonstrated to be the most fuel-efficient Class 8 models for long-haul and regional goods movement. SmartWay Tractors can be sleeper or day cab configurations. The required components of the SmartWay Designated Tractor are:

SmartWay Designated Tractor Sample
ComponentSpecifications
Engine
  • Current model year engine certified to meet applicable U.S. EPA emission requirements appropriate for the model year tractor. See notes below.
  • Fully electric tractors (battery or fuel cell) certified to U.S. EPA GHG standards qualify for SmartWay designation.
Aerodynamics
  • Aerodynamically integrated high-roof fairing or cab compartment
  • Aerodynamic mirrors
  • Aerodynamic bumper
  • Tractor side extending fairings (also called tractor gap reducers)
  • Fuel tank fairings (also called chassis fairings)
Tires
  • SmartWay verified low-rolling resistance steer and drive tires
    (duals or singles) (aluminum wheels optional)
Idle Reduction

Sleeper and day cabs must have automatic engine shut-off (AES) capability.

For sleeper cabs, manufacturer availability of at least one option providing eight hours or more of engine idle-free auxiliary power, heat, and/or air conditioning using: 

  • Auxiliary power unit or generator set
  • Fuel operated heater
  • Battery air conditioning system
  • Thermal Storage System

For day cabs, manufacturers are encouraged to provide additional idle reduction options that meet regional-haul needs.


To Designate a Tractor

  • Ensure that your tractors have the above features
  • Contact SmartWay_Transport@epa.gov with your company's name and tractor(s) details

Finding SmartWay Tractors

Highlight
Applying the SmartWay Logo
  • How to Apply the SmartWay Logo to Your SmartWay Tractors and Trailers


The following tractor models are SmartWay Designated in both sleeper and day cab configurations, when properly equipped.

ManufacturerTractor ModelModel Year
DaimlerCascadia2008, or newer
DaimlerCentury Class S/T2008, or newer
DaimlerColumbia2008, or newer
InternationalLT2016, or newer
KenworthT20002008 - 2011
KenworthT6602008, or newer
KenworthT6802012, or newer
KenworthT7002011 or newer
MackPinnacle2008 - 2016
Navistar9200i2007 - 2009
NavistarLoneStar2008, or newer
NavistarProStar, ProStar+2007, or newer
Peterbilt3842010, or newer
Peterbilt3872008 - 2011
Peterbilt3862008, or newer
Peterbilt5872011, or newer
Peterbilt5792012, or newer
VolvoVN 6302007, or newer
VolvoVN 6702007, or newer
VolvoVN 7802007, or newer
Western Star5700XE2016, or newer


The following tractor models are SmartWay Designated only in day cab configurations, when properly equipped.

ManufacturerTractor ModelModel Year
MackAnthem2017, or newer
VolvoVNL 3002017, or newer
VolvoVNR 3002017, or newer
Notes:
  • EPA does not endorse the products or services of commercial companies. Any reference to a specific commercial product or service by trade name, trademark, manufacturer, company, or otherwise does not constitute or imply the endorsement or recommendation of EPA.
  • Fuel savings estimates are based upon extensive research, fleets, and the input of industry and scientific associations.  However, your increase in freight efficiency will depend upon several factors including your operations and the fuel-efficiency of your starting vehicles.
  • All equipment must be maintained per manufacturer’s service recommendations and replaced when necessary.
  • For model year 2014 and newer tractors, the tractor must be certified to applicable EPA GHG standards. For model year 2020 and older tractors, the tractor’s engine must be certified to applicable U.S. EPA emission standards appropriate for the model year tractor. For 2021 and newer tractors, the tractor is certified in combination with the diesel or alternatively fueled powertrain (certified engine, transmission, battery electric, fuel cell electric, hydrogen, and/or other systems).

Verified Technologies for SmartWay and Clean Diesel

  • Clean Diesel Technology
    • Learn About
    • Verified List
    • Verification Process
    • Manufacturer Contact List
  • SmartWay Technology
    • For Trucks & School Buses
      • Designated Tractors
      • Designated Trailers
      • Refrigerated Trailers and TRU Calculator
      • Aerodynamic Devices
      • Idling Reduction
      • Tires
    • For Locomotives
    • For Marine Technology
Contact Us about Verified Technologies for SmartWay and Clean Diesel
Contact Us about Verified Technologies for SmartWay and Clean Diesel to ask a question, provide feedback, or report a problem.
Last updated on October 26, 2026
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