The Mercedes-AMG M177 engine, one of the most powerful V8s on the market, has helped cement AMG as one of the top names in performance and innovation. The rumbling twin-turbo V8 engine propels some of the most exhilarating AMG cars with raw power and engineering endeavors. In this blog, we will discuss all about M177 engine specs, key characteristics, and the impact of M177 engine on the automobiliy world.

Here’s a quick summary of the Mercedes-AMG M177 engine

Mercedes-AMG's M177 4.0-liter, twin-turbocharged V8. The M177 engine was introduced as a successor to the M157 engine and shares its architecture with the M178 engine used in the AMG GT models, differentiated chiefly by its configuration and application.

M177 Engine Key Specifications

Engine: 4.0L Twin-Turbocharged V8

Displacement: 3,982 cc

Bore x Stroke – 83.0 mm x 92.0 mm

CR: 8.6:1—10.5:1, depending on model

Horsepower: 469 hp – 720 hp (varies by variant)

Torque: 650 Nm - 900 Nm (479 lb-ft - 664 lb-ft)

Ashok Leyland has also given a piezo1 at indirect inject technology to its direct injection system.

Turbochargers: IHI V Twin-Scroll Turbochargers

Radiator: Air-to-Water Intercooler

Valvetrain: Dual Overhead Cam w/ VVT

Variants of the M177 Engine

Depending on the AMG model it's equipped to, the M177 engine has different power outputs. Here are some of the most notable versions:

M177 DE 40 AL (Basic Version) — 469 - 577 hp (AMG E 63, AMG C 63, etc.)

M177 DE 40 LA (Higher Output): Reserved for some higher-performance applications, such as the AMG GT 63 S, with up to 639 hp.

Hybrid Variants: The latest-generation M177 engines also feature EQ Boost technology, which enhances overall performance and enables hybrid AMG models.

The M177 Engine Performance Specifications

Hot-V Turbo Layout – The turbochargers are positioned on top of the cylinder banks where they are close to the valves, resulting in low-lag, high throttle response.

The lightweight construction of the box aluminum and forged internals help keep the weight down while ensuring adequate durability.

Cylinder Deactivation - Higher trim variants feature cylinder deactivation for improved fuel economy under low-load driving conditions.

AMG Performance Exhaust - Optimizes exhaust gas flow and improves the sound of the engine.

Advanced Cooling System — The vehicle’s air-to-water intercooler system ensures ideal engine temperatures are maintained even under maximum load.

Applications of the M177 Engine

The M177 engine finds its home in a number of AMG models, including:

Mercedes-AMG C 63 / C 63 S

Mercedes-AMG E 63 / E 63 S

Mercedes-AMG S 63

Mercedes-AMG G 63

Mercedes-AMG GT 63 / GT 63 S

Conclusion

It's low-down grunt combined with very high revs means the Mercedes-AMG M177 engine capitalizes on the best practice of modern engineering. Lurking beneath the hood of its plushest four-door or most flamboyant two-door, this twin-turbo V8 remains the benchmark against which AMG performance mills measure themselves.