Mack Trucks
MD
MD (2020)
2020–2024
Photo: Admcc17 · Wikimedia Commons · CC BY-SA 4.0
About this generation
The Mack MD was introduced in 2020 as a medium-duty truck for urban delivery, regional distribution and vocational applications. Available as the MD6 Class 6 and MD7 Class 7, it combines a short bumper-to-back-of-cab design with Mack's distinctive styling and a range of body configurations including box, stake, flatbed, dump and tank applications.
Key Features
- Class 6 and Class 7 medium-duty truck
- Urban delivery
- Regional distribution
- Vocational applications
- MD6 and MD7 ratings
- Short 103-inch bumper-to-back-of-cab length
- Excellent maneuverability
- Day cab configuration
- Box and refrigerated bodies
- Stake and flatbed bodies
- Dump applications
- Tank applications
Technical Overview
- Production
- 2020–2024
- Replaced
- Mack medium-duty legacy models
- Succeeded by
- MD (2024)
Cab & Transmission
- Cab Types
- Day Cab
- Transmissions
- Allison automatic transmission
Engines
6 engines
B6.7
6 variants
6.7 L • Diesel • Turbocharged inline-6 • 6 cyl
B6.7
Cummins B6.7 220
Introduced 2020
220 hp
Power
600 Nm
Torque
6.7 L
Displacement
EPA
Emission
Turbocharged inline-6 • DieselB6.7
Cummins B6.7 240
Introduced 2020
240 hp
Power
560 Nm
Torque
6.7 L
Displacement
EPA
Emission
Turbocharged inline-6 • DieselB6.7
Cummins B6.7 250
Introduced 2020
250 hp
Power
660 Nm
Torque
6.7 L
Displacement
EPA
Emission
Turbocharged inline-6 • DieselB6.7
Cummins B6.7 260
Introduced 2020
260 hp
Power
660 Nm
Torque
6.7 L
Displacement
EPA
Emission
Turbocharged inline-6 • DieselB6.7
Cummins B6.7 280
Introduced 2020
280 hp
Power
660 Nm
Torque
6.7 L
Displacement
EPA
Emission
Turbocharged inline-6 • DieselB6.7
Cummins B6.7 300
Introduced 2020
300 hp
Power
660 Nm
Torque
6.7 L
Displacement
EPA
Emission
Turbocharged inline-6 • Diesel