Mercedes-Benz M256 3.0L

Description

Mercedes-Benz M256 3.0L Turbocharged Inline-6 Engine Performance Redefined

The Mercedes-Benz M256 engine is a next-generation 3.0-liter turbocharged inline-6 powerplant engineered for luxury and high-performance applications. It represents a major leap forward in Mercedes-Benz’s engine design, replacing older V6 units with a more powerful, smoother, and fuel-efficient configuration. The M256 integrates a 48-volt mild-hybrid system with an Integrated Starter Generator (ISG) and an electric auxiliary compressor for instant boost and reduced turbo lag.

This engine produces up to 429 horsepower and 384 lb-ft of torque, with an extra 21 hp and 184 lb-ft available via EQ Boost during acceleration. It delivers strong, seamless power while maintaining quiet, efficient operation. Constructed with lightweight aluminum alloy and packed with Mercedes’ CAMTRONIC variable valve timing and advanced emissions technology, the M256 engine is built for both performance and longevity.

Key Features:

• Engine Type: 3.0L Inline-6 Turbocharged with Electric Auxiliary Compressor

• Mild-Hybrid System: 48V with Integrated Starter Generator (ISG)

• Peak Power: Up to 429 HP

• Peak Torque: 384 lb-ft + EQ Boost (21 HP / 184 lb-ft)

• Construction: Lightweight aluminum alloy block and head

• Turbocharging: Twin-scroll turbo + electric booster for immediate power

• Technology: CAMTRONIC variable valve timing, low internal friction

• Emission Compliance: Euro 6 standards

Compatibility:
The M256 engine fits various Mercedes-Benz models, typically from 2017 onward, including:

• E-Class: E450, E53 AMG

• CLS-Class: CLS450, CLS53 AMG

• S-Class: S450, S500

• GLE-Class: GLE450

• GLS-Class: GLS450

• AMG GT 4-Door Coupe: GT53

Ideal for luxury rebuilds, OEM replacements, or performance upgrades, the M256 engine delivers precision engineering, exceptional responsiveness, and future-ready efficiency. Always confirm fitment with your VIN or consult a certified technician prior to purchase.