Mack MD

The Mack MD is a series of medium-duty (Class 6 and 7) trucks built by Mack Trucks. It has a short, low-profile hood and a high-visibility cab. It is designed as straight trucks for local delivery, construction, and other vocational jobs. The MD was introduced in February 2020 entered full production in July 2020.

Design
The MD is a short-hood conventional. Designed for local use it has a day-cab only. It has two axles with the rear one driven. Total loaded weight can be up to 25,995 lb for the MD6 and 33,000 lb for the MD7.

Mack doesn't build any medium-duty components and uses a vendor engine, transmission, and axles.

Engine and transmission
A Cummins B6.7L diesel engine is used. It is a 6.7L turbocharged inline six-cylinder engine. It develops 220 to 300 hp and 560 to 660 lb.ft of torque.

An Allison 6-speed transmissions is used. They are fully automatic planetary gear transmission with a lock-up torque converter.

Chassis
A ladder frame with beam axles is used. Meritor supplies both the front and driven rear axles.

Applications
Mack is marketing the MD for local box van, stake/flatbed, dump, and tanker use.

BEV
240 kWh NMC battery, 19.2 kW AC or 80 kW DC charging. 260hp, 1850lb-ft. 19400lb payload. Dual-airbag cab suspension and air ride seat. Led headlights, steel front bumper, galvanized steel cab, 120k psi steel frame, 5 wheelbase options.