Also available in Electric

MD Series

  • class
  • 6 & 7
  • medium duty
  • power
  • 220 - 300
  • hp
  • torque
  • 560 - 660
  • lb-ft

Mack’s heavy-duty toughness in a medium-duty truck.

Legendary durability.

New longer cab

Longer cab with 4” more interior room and a 107” BBC

120,000 PSI yield frame rails1

Heavy-duty steel frame rails ensure years of dependable service.

Clear back-of-cab above frame and side frame

Space with pre-wired Body Builder connections to Cummins & Allison

Built for a smooth, quiet ride.

Dual-airbag cab suspension

The standard dual-airbag cab suspension system delivers serious comfort for drivers to help them finish each day strong.

Standard rear leaf spring suspension

The standard rear leaf spring suspension is engineered to take on heavy loads with ease.

Optional Mack AL AirRide suspension

The optional AirRide suspension incorporates a dual-airbag design to soften bounces and bumps.

Mack Truck Builder

Customize your own MD from the ground up with our digital truck builder experience.

Build My MD

Mack Live Tour

Experience Mack like never before. Our exclusive video walk-around pairs you with a dedicated Mack product specialist who can show you every vehicle angle, every feature and answer any question.

Book Your Experience

Harness the power of integrated uptime.

24/7 Roadside Assistance

Our OneCall® experts provide full-service support across North America.

Performance Tracking

The Geotab® system delivers intelligence and benchmarking to improve productivity.

Nationwide Dealer Network

More than 400 dealer locations across North America.

Explore MD

PEEP WINDOW

Passenger peep window allows for greater visibility for changing lanes, backing up and right turns.

POWDER-COATED DISC WHEELS

Standard powder-coated disc wheels deliver long-lasting durability.

READABLE GAUGES

Large digital gauges make key information easy to find.

GRATED STEPS

Full-width grated steel steps offer safer entry & exit.

HEATED LED HEADLIGHTS

Heated LED headlights increase forward visibility by up to 29% and side visibility by up to 50%.

Specs & Downloads

#id-4

Warranty & Protection Plans

#id-5

Purchase & Financing

#id-6

Base Configurations

CLASS

6 & 7

HORSEPOWER

220 – 300 hp

TORQUE

560 – 660 lb-ft

GVW

29,995 – 33,000 lbs

Engines

DIESEL

Cummins B6.7
Efficiency Series

6.7 Liter
220 – 260 HP
520 – 660 lb-ft

DIESEL

Cummins B6.7
Performance Series

6.7 Liter
280 – 300 HP
660 lb-ft

BATTERY ELECTRIC

Learn More >

Transmissions

AUTOMATIC

Allison 2500 HS
Highway Series

6-speed
Fuel Sense NAS

AUTOMATIC

Allison 2500 RDS
Rugged Duty Series

6-speed
Fuel Sense Premium
Parking Pawl

AUTOMATIC

Allison 3000 RDS
Rugged Duty Series

6-speed
Fuel Sense Premium
PTO and Retarder Options

Axles

FRONT AXLE

Meritor

DRIVE AXLE

Meritor

Suspensions

LEAF

Mack Multi Leaf

AIR

Mack AL

Standard features

Interior Storage

Overhead console with storage

Four Interior LED dome lights
Adjustable seat belts
Anti-lock brakes with automatic traction control
Air Conditioning
Cruise Control
Air Suspension Driver's Seat
AM/FM w/ Bluetooth
Console Cup Holders
Tilt & Telescopic Steering Column
Flat-Bottom Steering Wheel with Cruise, Phone, and Radio Controls
12 Volt and USB Outlets
Bright Finish & Lower Convex Mirrors
Power Steering
Power Windows and Locks
Dual, Airbag Cab Suspension
120k PSI Steel Frame Rails1

Optional features

Allison Upgrade

Fuel Sense 2.0 MAX

Battery Shut Off

Under cab, passenger side

Engine Block Heater

Added protection in frigid temperatures

Air Filter Indicator

Under hood, restriction indicator mounted to air cleaner

PTO Preparation Kit

Harness & switch kit

Cab Mirrors

Chrome finish & convex

Driver Seat

Premium driver's seat with increased recline and lumbar support

Seat Upholstery

Mordura cloth upgrade

Downloads

Mack MD6
Mack MD7
Mack MD6 (FR)
Mack MD7 (FR)
Warranty

More than warranty protection. Peace of mind with complete coverage for the first year.

Explore Warranty

Protection Plans

Lock in parts and labor costs with plans that cover powertrains, after treatment systems, chassis, clutches and towing at today’s prices.

Explore Plans

Finance on Your Terms

Mack Financial Services provides the support you need to build your business.

Explore Financing

Current Offers

Once a Mack. Always a Mack.

We build trucks for a lifetime of hard work. That means a Mack Certified used truck is one of the best values on or off the road.

Learn about the Mack Certified program

See Inventory

Mack Stories

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Expanded virtual truck configurator wows users.

Read Article

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Demand Leads to New Electric Offering and Plant Expansion

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Mack Anthem and MD help fuel FoodPRO growth

Serving Up a Growing Appetite for Mack

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1 Only available on MD7. MD6 features 110k PSI frame rails.