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Most Fuel-Efficient Diesel Cars and Trucks in 2026

  1. 26

    2026 Chevrolet Silverado Mud Terrain Tires 4WD (Sport/off road)

    Pickup · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 21 city · 24 hwy
    Combined MPG· $4,150 fuel a year23 MPG
    $4,150fuel a year
  2. 27

    2026 GMC Sierra Mud Terrain Tires with Sport Mode

    Pickup · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 21 city · 24 hwy
    Combined MPG· $4,150 fuel a year23 MPG
    $4,150fuel a year
  3. 28

    2025 Chevrolet Suburban 4WD

    SUV · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 26 hwy
    Combined MPG· $4,350 fuel a year22 MPG
    $4,350fuel a year
  4. 29

    2025 Chevrolet Tahoe 4WD

    SUV · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 26 hwy
    Combined MPG· $4,350 fuel a year22 MPG
    $4,350fuel a year
  5. 30

    2025 GMC Yukon 4WD

    SUV · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 26 hwy
    Combined MPG· $4,350 fuel a year22 MPG
    $4,350fuel a year
  6. 31

    2025 GMC Yukon XL 4WD

    SUV · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 26 hwy
    Combined MPG· $4,350 fuel a year22 MPG
    $4,350fuel a year
  7. 32

    2025 Chevrolet Silverado Mud Terrain Tires 4WD

    Pickup · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 21 city · 24 hwy
    Combined MPG· $4,350 fuel a year22 MPG
    $4,350fuel a year
  8. 33

    2026 Chevrolet Suburban 4WD

    SUV · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 24 hwy
    Combined MPG· $4,350 fuel a year22 MPG
    $4,350fuel a year
  9. 34

    2026 Chevrolet Tahoe 4WD

    SUV · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 24 hwy
    Combined MPG· $4,350 fuel a year22 MPG
    $4,350fuel a year
  10. 35

    2026 GMC Yukon 4WD

    SUV · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 24 hwy
    Combined MPG· $4,350 fuel a year22 MPG
    $4,350fuel a year
  11. 36

    2026 GMC Yukon XL 4WD

    SUV · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 24 hwy
    Combined MPG· $4,350 fuel a year22 MPG
    $4,350fuel a year
  12. 37

    2027 Chevrolet Suburban 4WD

    SUV · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 24 hwy
    Combined MPG· $4,350 fuel a year22 MPG
    $4,350fuel a year
  13. 38

    2027 Chevrolet Tahoe 4WD

    SUV · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 24 hwy
    Combined MPG· $4,350 fuel a year22 MPG
    $4,350fuel a year
  14. 39

    2027 GMC Yukon 4WD

    SUV · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 24 hwy
    Combined MPG· $4,350 fuel a year22 MPG
    $4,350fuel a year
  15. 40

    2027 GMC Yukon XL 4WD

    SUV · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 24 hwy
    Combined MPG· $4,350 fuel a year22 MPG
    $4,350fuel a year
  16. 41

    2025 Chevrolet Silverado 4WD ZR2

    Pickup · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 23 hwy
    Combined MPG· $4,550 fuel a year21 MPG
    $4,550fuel a year
  17. 42

    2026 Chevrolet Silverado 4WD ZR2 (Sport/Off Road)

    Pickup · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 20 city · 23 hwy
    Combined MPG· $4,550 fuel a year21 MPG
    $4,550fuel a year
  18. 43

    2025 GMC Sierra 4WD AT4X

    Pickup · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 19 city · 20 hwy
    Combined MPG· $5,050 fuel a year19 MPG
    $5,050fuel a year
  19. 44

    2026 GMC Sierra 4WD AT4X with Sport Mode

    Pickup · 4-Wheel Drive · Diesel

    3.0 L 6-cyl turbo 19 city · 20 hwy
    Combined MPG· $5,050 fuel a year19 MPG
    $5,050fuel a year

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