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.
New cab ensures a smooth, stress-free ride
Flat-bottom steering wheel with cruise control, telephone, and radio/audio controls gives drivers more room for entry/exit and operation. Tilt-telescopic steering column lets drivers adjust their comfort.
Steering
New premium driver’s seat features increased seat recline, adjustable lumber support, and a choice of vinyl or Mordura upholstery. Plus, adjustable driver and passenger seat belts mean increased safety and comfort.
Seating
New overhead console provides additional storage and improved interior lighting replaces two halogen bulbs with four LED dome lights
Storage and lighting
Four inches of additional legroom
Legroom
Pre-wired Body Builder connections to Cummins & Allison
Body Builder
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.
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.
Numerous wheelbase options.
With sizes from 12 to 23 feet, get the perfect wheelbase for your application.
151"
175"
187"
205"
217"
235"
255”
274"
Harness the power of integrated uptime.
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
Warranty & Protection Plans
Purchase & Financing
Base Configurations
CLASS
6 & 7
HORSEPOWER
220 – 300 hp
TORQUE
560 – 660 lb-ft
GVW
25,995 – 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
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
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
Warranty
More than warranty protection. Peace of mind with complete coverage for the first year.
Protection Plans
Lock in parts and labor costs with plans that cover powertrains, after treatment systems, chassis, clutches and towing at today’s prices.
Finance on Your Terms
Mack Financial Services provides the support you need to build your business.
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.
Mack Stories
Mack MD grows with customer acceptance
Demand Leads to New Electric Offering and Plant Expansion
1 Only available on MD7. MD6 features 110k PSI frame rails.