Mercedes-AMG is preparing for one of its most significant lineup shifts in recent years, as reports indicate that the company will end production of several four-cylinder AMG models by 2026. The move reflects a broader strategic reorientation that combines regulatory pressure, evolving customer expectations, and a renewed commitment to larger, more emotionally engaging performance engines. While Mercedes has not officially confirmed every detail, widespread industry reporting and internal documentation leaks paint a clear picture of what lies ahead.
For years, AMG has experimented with downsized, electrified four-cylinder engines, especially in its “35” and “45” series, as well as in the high-profile plug-in hybrid systems found in the latest C 63 and GLC 63 models. The most powerful of these—the 2.0-liter M139 engine paired with hybrid technology—impressed on paper, delivering extraordinary power figures that sometimes exceeded what earlier V8s could produce. Yet despite the engineering brilliance, the reception among long-time enthusiasts was mixed. Many fans felt that the downsized powertrains, while technically advanced, lacked the visceral character and sound that defined AMG’s identity for decades.
This sentiment appears to be one of the key reasons Mercedes is ready to pivot. Reports suggest that customer demand for AMG’s four-cylinder plug-in hybrids has been weaker than expected, especially in comparison to traditional six-cylinder and eight-cylinder variants. Buyers interested in AMG models typically prioritize emotion, sound, and presence—areas where even the most advanced four-cylinder engines struggled to satisfy.
Regulatory pressure is another major factor driving the change. New global noise regulations, particularly in Europe, are tightening limits on the amount of sound performance cars can produce. Ironically, downsized turbocharged engines paired with hybrid systems can face difficulties meeting these requirements without extensive and expensive reengineering. As the regulations take effect in mid-2026, the cost of compliance for certain four-cylinder AMG models may outweigh their market value, especially for variants with lower sales volume.
As a result, several current AMG models using four-cylinder engines are reportedly scheduled to end production by 2026. These include the AMG 35 and 43 variants found in the GLA, C-Class, and GLC ranges. Their more aggressive plug-in hybrid counterparts—the C 63 S E Performance and GLC 63 S E Performance—are also reportedly being phased out. Production of these models is expected to wind down through the first half of 2026.
The shift marks a remarkable reversal from Mercedes-AMG’s earlier trajectory. When AMG first introduced the four-cylinder hybrid C 63, it presented the downsized engine as part of a forward-looking performance strategy centered on electrification and efficiency. The setup showcased AMG’s technological confidence and a belief that electrified four-cylinders could become the new performance benchmark. But while the system delivered astonishing power and acceleration, many buyers found the real-world experience overly complex and the soundtrack underwhelming.
The brand appears to have listened. Looking ahead, AMG is reportedly planning a renewed focus on larger-displacement engines, including a new generation of V8s and an inline-six engine. These powertrains are expected to integrate modern hybrid technology in a way that enhances performance without sacrificing the emotional qualities that AMG customers value. Specifically, the next-generation C-Class AMG models are widely expected to return to a V8 setup—a move sure to please traditional enthusiasts.
This strategic shift fits into a broader industry pattern. As electrification accelerates, performance brands are searching for ways to maintain identity while meeting regulations. Some manufacturers have embraced full electrification early, while others are navigating a hybrid middle ground. Mercedes-AMG’s revised approach suggests it is aiming for a balance: keeping electrification where it enhances performance, but not at the expense of brand heritage.
The move will also have commercial implications. Simplifying the lineup by removing slower-selling four-cylinder models could help Mercedes focus on higher-margin vehicles. AMG variants are typically among the brand’s most profitable products, but only when they resonate strongly with buyers. Streamlining the offerings allows AMG to allocate engineering resources to the engines and models that best represent its performance ethos.
Still, the decision does not necessarily signal the end of four-cylinder AMGs altogether. Compact performance cars, such as the A 45 and CLA 45, remain popular in many markets and deliver a unique blend of power and practicality. These models, especially the 45-series vehicles, may continue into the next generation, benefiting from the extraordinary output of AMG’s world-class 2.0-liter turbo engine. However, the broader trend suggests that four-cylinder powertrains will play a reduced role in AMG’s future strategy.
For customers and enthusiasts, the reported shift brings a level of clarity. Many had wondered whether AMG would double down on its hybrid four-cylinder approach or reconsider its direction. With production of most four-cylinder AMG models reportedly ending in 2026, the brand appears ready to re-embrace the emotional qualities—sound, character, and presence—that made it famous.
As the automotive world moves rapidly toward electrification, AMG’s recalibration provides a compelling case study of how performance sub-brands can evolve without losing their core identity. The coming years will reveal how successfully Mercedes balances regulation, innovation, and tradition, but for now, one thing seems clear: the era of the four-cylinder AMG is nearing its close, and a new chapter is about to begin.
