Mercedes-AMG to Retire Four-Cylinder Plug-In Hybrid Drivetrain
Mercedes-AMG is gearing up to phase out the controversial four-cylinder plug-in hybrid drivetrain from its C63 and GLC 63 models, signaling a strategic shift in the brand’s engine line-up. This decision was confirmed by a senior insider at the unveiling of the Concept GT XX in Germany.
Future petrol-powered Mercedes-AMG models will now adopt either an updated version of the current in-line six-cylinder engine or a new V8 with a flat-plane crankshaft design, similar to the one used in the GT Black Series. The move comes after the four-cylinder engine, based on the M139 platform, received criticism for lacking character and weight compared to its V8 predecessor, despite its impressive performance capabilities.
While a specific timeline for the phase-out has not been set, the engine will continue to be in production for the time being before being eventually replaced. One of the main reasons for this shift is the high cost of engineering the four-cylinder to meet upcoming Euro 7 emissions regulations, making it a challenging investment for the brand.
As Mercedes-Benz plans to discontinue several compact models using the M139 engine, including the A-Class hatchback, the decision to retire the four-cylinder plug-in hybrid drivetrain aligns with a broader strategy within the company. Models like the SL 43 4Matic are expected to transition to new turbocharged six-cylinder engines to replace the current units.
Markus Schäfer, Mercedes-Benz CTO, reiterated AMG’s commitment to a dual-drivetrain strategy, emphasizing the brand’s focus on both electric and hybridized internal combustion engines. He mentioned that a brand-new V8 engine is in development to meet upcoming emissions regulations, ensuring that there will still be electrified six- and eight-cylinder units in the lineup.
Overall, the retirement of the four-cylinder plug-in hybrid drivetrain from Mercedes-AMG’s C63 and GLC 63 models marks a significant shift in the brand’s engine offerings, reflecting a strategic response to market demands and regulatory requirements.
