Exterior Colors:
- Year 2026
- Make Mack Trucks
- Model MD Series
- Engine Cummins B6.7 Efficiency Series | Cummins B6.7 Performance Series
2026 Mack Trucks MD Series MD7
2026 Mack Trucks MD Series MD7
Mack’s heavy-duty toughness in a medium-duty truck.Features may include:
- Steering
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.
- Storage and lighting
New overhead console provides additional storage and improved interior lighting replaces two halogen bulbs with four LED dome lights
- Legroom
Four inches of additional legroom
- Body Builder
Pre-wired Body Builder connections to Cummins & Allison
- Dual-airbag cab suspension
The standard dual-airbag cab suspension system delivers serious comfort for drivers to help them finish each day strong.
Engine
Engine
Cummins B6.7 Efficiency Series | Cummins B6.7 Performance Series
Engine Type
6.7 Liter
Engine Power
Efficiency Series: 220 – 260 HP | Performance Series: 280 – 300 HP
Engine Torque
Efficiency Series: 520 – 660 lb-ft | Performance Series: 660 lb-ft
Drivetrain
Transmission
Allison 2500 HS Highway Series 6-speed Fuel Sense NAS | Allison 2500 RDS Rugged Duty Series 6-speed Fuel Sense Premium Parking Pawl | Allison 3000 RDS Rugged Duty Series | 6-speed Fuel Sense Premium PTO and Retarder Options
Suspension
Suspension
Leaf: Mack Multi Leaf | Air: Mack AL
Features
Features
Overhead console with storage | Air Suspension Driver's Seat | Flat-Bottom Steering Wheel with Cruise, Phone, and Radio Controls | 12 Volt and USB Outlets | Power Windows and Locks
Axle Count
Front: Meritor | Drive: Meritor