Overview: A Major Shift for Mercedes-AMG
In a bold move set to redefine its performance legacy, Mercedes-AMG is dropping its four-cylinder engines in favor of inline-sixes and V-8s starting with the 2025 model year. This strategic change marks a powerful return to the performance roots of AMG while addressing customer demand for higher output and improved sound quality.
For years, AMG has flirted with electrification and downsizing, but purists often missed the signature growl and brute force of the V-8. Now, Mercedes-AMG is listening.
Key Specifications
- Engine Options:
- 3.0L Turbocharged Inline-Six
- 4.0L Bi-Turbo V-8
- Transmission: AMG SPEEDSHIFT® MCT 9-speed
- Horsepower Range: 430–630 hp
- Drivetrain: 4MATIC+ all-wheel drive
- Acceleration (0–60 mph): Approx. 3.7 seconds (V-8 model)
Top Features of the New AMG Lineup
- High-Performance Powertrains: Improved torque, better throttle response, and thrilling acceleration.
- AMG Ride Control+ Adaptive Suspension: Designed for precision handling and comfort.
- 48V Mild Hybrid System: Boosts performance while aiding fuel efficiency.
- Aggressive Aerodynamics: Includes wider fenders, a new front splitter, and quad exhausts.
- MBUX Superscreen: With AMG-specific menus, live telemetry, and voice AI.
Why This Change Matters
Dropping the four-cylinder is more than just a technical revision—it’s a statement. Mercedes-AMG is doubling down on what made it legendary: performance that stirs emotion. This move also distances AMG from competitors who continue to downsize for efficiency at the cost of excitement.
Although the four-cylinder hybrid in the C63 offered solid numbers on paper, it lacked the visceral experience expected from an AMG. With the new inline-sixes and V-8s, AMG restores the thunder.
AMG Hybrids Are Here to Stay—But Change Is Coming
While the days of the four-cylinder engine may be numbered, Mercedes-AMG remains fully committed to its plug-in hybrid strategy. According to AMG boss Michael Schiebe, the brand sees clear benefits in combining electric motors with internal combustion engines. “There are a lot of advantages to pairing electric motors with combustion engines,” Schiebe explained. “We want to provide a variety of drivetrain options so customers can choose what best suits their driving needs.”
That said, some enthusiasts have criticized AMG’s recent plug-in hybrid models—particularly the C63 and GLC63—for lacking the signature AMG character. Much of the disappointment stemmed from the underwhelming engine sound. In our tests, the M139 four-cylinder engine came across as “reedy” and “buzzy,” a far cry from the deep, thunderous note of a classic V-8.
Moreover, the added weight from the hybrid system—bringing the C63’s curb weight close to 5,000 pounds—negated much of the performance advantage offered by its increased horsepower. As a result, the hybrid C63 didn’t feel significantly quicker or more dynamic than the previous V-8-powered generation.
Following the 2024 U.S. launch of the current C63, rumors began circulating that the beloved V-8 might return as early as 2026. While AMG hasn’t officially confirmed the timeline, a spokesperson told Autocar that the four-cylinder engine would remain in production “for the time being” before being “eventually” replaced—suggesting its days are indeed limited.
Sustainability and Technology
Despite returning to larger engines, Mercedes-AMG is integrating mild hybrid systems and electrified turbochargers to keep emissions under control. This ensures compliance with European and U.S. emissions standards while maintaining blistering performance.
The 48V electrical system also allows regenerative braking, quick start/stop functions, and added torque fill during acceleration.
Expert Opinion
According to Car and Driver, “AMG’s decision to bring back larger engines signals a renewed focus on driving excitement—a welcome shift for enthusiasts.”
MotorTrend also suggests that the inline-six is one of the smoothest engines in the industry, offering an ideal blend of refinement and power.
FAQs
Q1: Why is Mercedes-AMG dropping four-cylinder engines?
A: AMG is prioritizing performance and customer feedback that favors inline-sixes and V-8s for better sound, torque, and thrill.
Q2: Will this impact fuel efficiency?
A: While V-8s consume more fuel, AMG is using 48V mild-hybrid tech to reduce emissions and improve mpg.
Q3: When will the new models launch?
A: The first models with inline-sixes and V-8s are expected to arrive in late 2025.
Q4: Will the C-Class AMG still be available?
A: Yes, but it’s likely to return with an inline-six instead of the 2.0L hybrid.
Conclusion : The decision by Mercedes-AMG to abandon four-cylinder engines in favor of inline-sixes and V-8s represents a thrilling return to form. With improved performance, updated tech, and a focus on driving dynamics, the 2025 AMG models promise to reignite passion in loyal fans and attract new enthusiasts. Whether you’re a performance purist or just someone who loves the roar of a V-8, AMG’s latest move might just be its smartest yet.