Mercedes-AMG C63 Set to Receive Enhanced Engine Options

Mercedes faced significant backlash when it introduced a four-cylinder variant of the C63. Despite not publicizing sales figures, substantial discounts indicate AMG struggled to demonstrate the value of the new 2.0-liter engine to consumers. Company executives have acknowledged a decline in their customer base following the discontinuation of the V8 engine.

Potential Engine Upgrades Revealed

Mathias Geisen, a board member overseeing Marketing & Sales, mentioned in an Auto Express interview that the C63 might see an engine upgrade. However, the iconic V8 is unlikely to make a return. Instead, AMG is developing a new eight-cylinder engine in Affalterbach, though it won't be available in the flagship C-Class. A more probable development is the introduction of an inline-six engine for the performance sedan.

Geisen stated, "We will provide options where we previously offered a four-cylinder, including a six-cylinder option in the future. There might be hybrid variants, or it could remain purely internal combustion. We will announce more details when available."

Rumors and Official Statements

This isn't the first speculation about a six-cylinder C63. Earlier reports from Mercedes-Benz Passion Blog suggested AMG might install a mild-hybrid 3.0-liter straight-six, known as "M256M," which is already used in models like the CLE53 and the Aston Martin DBX.

There are reports that the top-tier C-Class might transition from the C63 to the C53 badge. Conversely, Autocar proposed that AMG might retain the C63 nameplate for a six-cylinder plug-in hybrid version. The trend and official hints point towards replacing the four-cylinder with an inline-six, likely incorporating some electrification to comply with stricter emission standards.

Future Prospects and Comparisons

This transition could occur as soon as next year, aligning with the C-Class mid-cycle facelift scheduled for 2026 and the introduction of a new flagship model. Whether it retains the C63 or switches to C53 remains uncertain, but AMG is committed to maintaining its unique position in the market. The GLC 63 is also expected to adopt similar changes by 2027.

If the naming shift happens, it may lead to a more competitive pricing structure. In the U.S., the C63 sedan starts at $87,200 with destination fees, making it slightly more expensive than the BMW M3 Competition xDrive by $1,675.

Regarding competitors, BMW has confirmed that the next-generation M3 will continue with an inline-six engine, launching in 2028 following the electric M3. Audi Sport is set to introduce a new RS5 Avant, replacing the RS4 wagon, while likely maintaining a V6 engine as part of their plug-in hybrid strategy.