Mercedes-AMG has introduced a new 4.0-liter twin-turbocharged V8 engine for its GLE 63 S 4Matic+ and GLS 63 4Matic+ models. The new engine delivers a maximum output of 612 horsepower, promising enhanced performance and a more responsive driving experience. Both the GLE and GLS models will benefit from the increased power and improved dynamics offered by this engine upgrade. The manufacturer emphasizes a focus on delivering a heightened driving experience alongside the substantial power increase. This represents a significant update to the engine lineup for these popular AMG vehicles. The new V8 is designed to provide both power and a refined driving feel.