The 2025 G550 marks a significant shift as it bids farewell to the V-8 engine, a staple in American G-Class models. In its place, Mercedes introduces a 3.0-liter mild hybrid electrically supercharged and turbocharged inline-six engine. This new powertrain not only offers an increase in horsepower, jumping from 416 hp to 442 hp, but also integrates a 48-volt integrated starter-generator that can add up to 148 lb-ft of torque when needed. Despite a slight decrease in torque compared to the previous V-8, the new engine provides a broader torque range, promising enhanced performance across different driving conditions.
From the driver’s seat, the inline-six engine delivers a remarkably smooth and quiet ride, complemented by instant acceleration thanks to the electric compressor and mild hybrid system. The transition to a smaller engine does not compromise on power, with the G550 expected to accelerate from 0 to 60 mph in just 5.3 seconds, outpacing the previous model.
For those who crave even more power, the 2025 Mercedes-AMG G63 retains its robust 4.0-liter twin-turbo V-8 engine, now enhanced with a 48-volt mild hybrid system similar to that of the G550. This system boosts the G63 with an additional 20 hp and 148 lb-ft of torque on demand, ensuring dynamic performance and seamless power delivery. With the optional AMG Performance package, the G63 can rocket from 0 to 60 mph in an astonishing 4.1 seconds.
Both models introduce the AMG Active Ride Control system, an advanced feature that utilizes hydraulically interconnected dampers to optimize wheel and body movements. This system, particularly beneficial off-road, adjusts the compression and rebound damping rates individually, allowing for a customizable and stable driving experience. The AMG Off-Road package Pro further enhances this capability, offering three off-road driving modes and adjustable roll stiffness.
Off-road capabilities remain a cornerstone of the G-Class, with the 2025 models boasting impressive specs such as 9.5 inches of ground clearance, a fording depth of 27.6 inches, and the ability to handle slopes up to 35 degrees laterally. This prowess is complemented by a suite of mechanical differential locks and a low-range transfer case, ensuring that the G-Class remains true to its off-road heritage.
Inside, the G-Class has become quieter and more refined. Aerodynamic improvements help reduce the vehicle’s drag coefficient, while new insulation materials ensure a serene cabin environment. Introducing the latest MBUX infotainment system adds a modern touch to the interior, featuring a touchscreen interface that enhances user interaction.
As Mercedes-Benz prepares to launch these models, with the G550 arriving mid-year and the G63 AMG following in the fall, anticipation is building. While pricing details remain undisclosed, prospective buyers can expect a modest increase from the previous models, justified by the significant technological and performance enhancements.
The 2025 Mercedes-Benz G550 and G63 AMG represent a bold stride into the future of luxury off-road vehicles, seamlessly integrating classic elements with innovative electrification and advanced driving technologies. As these models hit the roads, they are set to redefine expectations, proving that the iconic G-Class can learn new tricks.
