Mercedes-Benz M256 3.0L EQ Boost engine For Sale

Mercedes-Benz M256 3.0L Inline-6 Turbocharged Petrol Engine(EQ Boost).

Premium Replacement Modern, used engine For Sale.

The Mercedes-Benz M256 3.0L EQ Boost engine is the most advanced power units in the modern Mercedes-Benz lineup, combining high performance, cutting-edge hybrid technology, and exceptional refinement.

Designed to replace traditional V6 engines, this straight-six turbo engine will deliver smoother power, lower emissions, and improved fuel efficiency while furthermore maintaining the strong acceleration expected from premium Mercedes models. It will also be an ideal choice for luxury, performance, and technology-focused vehicle applications.

This engine will feature a 3.0-liter (2999 cc) inline-six configuration, DOHC architecture, and four valves per cylinder, combined with direct fuel injection and a single turbocharger. The M256 will also integrate a 48-volt mild-hybrid EQ Boost system, which will provide an electric motor and starter-generator capable of adding up to 22 horsepower and 250 Nm of torque during acceleration.

Total engine output will typically range between 362 and 429 horsepower, depending on model tuning. An aluminum engine block, electric auxiliary compressor, and electric water pump will allow faster boost response, reduced turbo lag, and improved overall efficiency.

Compatibility, Common weaknesses and Maintenance.

The Mercedes-Benz M256 engine in a wide range of premium models, including the E-Class (W213 E450 and E53 AMG), S-Class (W222 S450 and S560), CLS-Class (C257), GLE (W167), GLS (X167), and some AMG 53 series vehicles.

It will be compatible with these platforms when paired with the correct 9G-TRONIC transmission, ECU, and 48-volt electrical architecture, making it suitable for advanced replacement or upgrade projects.

Common weaknesses on the M256 engine can be manageable with proper care. needs attention for 48-volt system components, coolant leaks from auxiliary pumps, oil separator failures, and electrical sensor faults as mileage increases.

Regular software updates, cooling system inspections, and high-quality synthetic oil servicing will be essential. When maintained correctly, the Mercedes-Benz M256 3.0L EQBoost engine will continue to deliver exceptional performance, smoothness, and cutting-edge efficiency for modern Mercedes vehicles.