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The All-New Mack

Powertrain

New MP®13 Engine

Powering the all-new Mack Granite® and Mack Keystone™, the 2027 MP®13 engine is available in a range of power ratings for a variety of vocational and hauling applications.

Greater power

The MP®13 delivers up to 540 horsepower and 1,950 lb-ft of torque, the highest-rated 13-liter engine from any North American manufacturer. Whatever the haul, whatever the terrain, you've got the power to handle it.

Greater Fuel Efficiency

The most fuel-efficient vocational engine Mack has ever built. Paired with the mDRIVE™ transmission, the MP®13 delivers up to 3–6% greater efficiency over previous vocational models, keeping more money where it belongs.*

Emission Compliance

The MP®13 is designed to meet strict EPA 2027 emission standards, with an advanced aftertreatment system (EATS) built in from the ground up.

PowerLeash® Engine Brake

The strongest integrated engine brake Mack has ever built. PowerLeash® delivers up to 630 horsepower of braking force, giving you confident control on steep grades while reducing wear on your service brakes.

Electric Park Brake

Increasing safety and reliability by providing consistent braking force, the electric park brake enables automatic engagement and integration with vehicle safety systems.

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Transmission and Suspension

New mDRIVE™ Transmissions

The new mDRIVE™ and mDRIVE™ HD transmissions utilize enhanced hardware sensors and valves to improve gear shifting performance across any terrain.

  • Available in 12-, 13-, or 14-speed configurations
  • Up to 30% faster shifting through optimized design
  • Optional Creep Mode for low-speed maneuverability
  • Predictive shifting based on load and grade

New MaxRide™ Rear Suspension

Available for Mack Granite® and Mack Keystone™, the MaxRide™ rear air suspension for superior ride quality, handling, and control.

  • New and proven system uses upright shocks, torque rods, and electronic controlled suspension.
  • Up to three drive levels for optimal ride height control.
  • Eight tuned airbags provide the most stable and best ride ever on a Mack Truck.
  • Mack Electronic Controlled Suspensions automatically adjust rear axle load for better traction, improving versatility and driver productivity in changing conditions.

Mack Axles

Durable and efficient, Mack axles combine innovative designs and advanced engineering to help maximize uptime and carry your business further.

  • Fully integrated with Mack’s MP®13 engine, transmission and suspension, this complete powertrain is designed to work seamlessly together for maximum efficiency.
  • Mack’s vocational axles are lighter than the competition and deliver better fuel economy even at high GCWs.
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