Dependability, durability and steadfast support

The all-new MD Series from Mack is built for growth. It provides everything you’ve come to expect from Mack in a medium-duty truck. It’s packed with features to ensure a smooth, stress-free ride.

Mack MD6 and MD7 Trucks

The Mack MD series is versatile and capable of utilizing a wide variety of truck bodies including 26′ boxes and reefers, delivery trucks, straight trucks, tow trucks, and much more.

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The MD Series 4×2 configuration is well-suited for dry van, refrigerated, fuel/water/waste, towing and recovery, and dump/utility bodies. It’s powered by the Cummins B6.7 diesel engine and matched with the Allison 2500HS six speed transmission. The MD6 and MD7 also come standard with FuelSense™ 2.0 fuel saving neutral-at-stop technology.

The MD7 provides the same quality, reliability and comfort of the MD6, with a higher GVWR for increased capability and flexibility. The industry has trusted its toughest jobs to Mack for generations. Now the industry has a wider array of options from Mack.

Mack MD Series Interior


The MD Series shares many interior components with the Mack Granite, providing a proven solution that takes advantage of economies of scale while maintaining the function, comfort and operator-oriented environment. The tilting/telescoping steering column and air suspension driver’s seat keep the driver comfortable and focused. The cab dash and floor space were redesigned to accommodate optional 3-person seating and to maximize the overall layout and interior space.

Base Configuration

  • 220-300hp
  • 560-660 lb-ft
  • MD6 – 25,995 lbs
  • MD7 – 33,000 lbs
  • Allison 2500HS 6-speed (standard)
  • Allison 2500RDS 6-speed (optional )
Rear Axle GAWR
  • 17,000 lbs (standard)
  • 17,500 lbs (optional)
  • 19,000 lbs (optional)
  • 21,000 lbs (optional)

Body Options

Fuel Tank
  • 50-gallon (standard)
  • 90-gallon (optional)
  • Rear Leaf Spring (standard)
  • Mack AirRide (optional)

Standard MD Series Features

  • Hood and Fenders
  • Side Mirrors
  • Halogen Headlights
  • Steel Bumper
  • Grab Handles
  • Off Set Mounted Steps
  • One Piece Windshield
  • Powder Coated Steel Wheels
  • 55° Wheel Cut
  • Vinyl Seats
  • Flat-Bottom Steering Wheel
  • Power Door Locks
  • Power Windows
  • Telescopic Steering Column
  • Air Suspension Driver's Seat
  • Premium Radio, AM/FM, MP3
  • Cup Holders
  • 12 Volt Power Outlets
  • Cruise Control

MD Series Warranty