98 MPGe combined is an astounding figure for the 2025 Mercedes-Benz EQS 450 Plus, a full-size luxury sedan that redefines opulence within the electric vehicle (EV) segment. This is a statement, a vehicle for buyers who demand ultimate refinement, cutting-edge technology, and a near-silent driving experience without compromise. These individuals find range anxiety a distant, forgotten concept, choosing the EQS 450 Plus precisely because its electric powertrain delivers an unparalleled sense of calm and effortless propulsion.

City and highway performance

The 2025 EQS 450 Plus achieves a remarkable 98 MPGe in both city and highway driving. This efficiency comes from its highly optimized electric drivetrain, low coefficient of drag, and efficient thermal management. Mercedes-Benz engineers designed this vehicle with a singular focus on maximizing range and efficiency without sacrificing comfort or performance. In urban environments, regenerative braking is incredibly effective, recapturing significant energy during stop-and-go traffic and contributing directly to that impressive city figure. On the open highway, the EQS glides, its aerodynamic shape slicing through the air with minimal resistance, and its electric motor operating within its most efficient RPM range. The single motor, rear-wheel-drive configuration of the 450 Plus also plays a crucial role, as it is inherently more efficient than dual-motor, all-wheel-drive setups found in higher-trim EQS models. This vehicle delivers efficiency consistently across diverse driving conditions, fulfilling the expectations of clientele who prioritize smooth, quiet operation above all else.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2025 Mercedes-Benz EQS 450 Plus at a mere $750 per year. This figure is based on an average of 15,000 miles driven annually, with a blend of 45% highway and 55% city driving, and using national average electricity prices. For the typical EQS 450 Plus owner, this $750 cost represents a negligible expenditure, a mere fraction of what they might spend on a comparable gasoline-powered luxury sedan. These buyers are driven by the convenience of home charging, the reduced environmental impact, and the sheer pleasure of never visiting a gas station. The calculation underscores the inherent financial advantage of electric propulsion, especially for high-mileage drivers, even within the premium segment.

Real-world expectations

In the real world, owners of the 2025 Mercedes-Benz EQS 450 Plus will find its 98 MPGe rating entirely achievable, and in many cases, surpassable. The driving characteristics of the EQS, its plush ride, insulated cabin, and linear power delivery, naturally encourage a smooth, measured driving style that is conducive to optimal efficiency. This vehicle invites quiet cruising. Factors like ambient temperature, tire pressure, and proper use of climate control will, of course, influence actual results, but the inherent efficiency of the EQS 450 Plus’s powertrain provides a generous buffer. For those who pre-condition their vehicle while plugged in, or who primarily charge overnight at home, the real-world fuel cost often feels even lower than the EPA estimate, further enhancing the ownership experience. This vehicle is designed for effortless, long-distance travel, and its efficiency plays a key role in that promise.

How it compares

The 2025 Mercedes-Benz EQS 450 Plus stands at the pinnacle of efficiency within its luxury EV segment. For comparison, consider the Tesla Model S Long Range, a strong competitor achieving 120 MPGe combined. While the Tesla edges out the EQS in raw efficiency, the EQS 450 Plus appeals to a different buyer: one who values traditional luxury, meticulous craftsmanship, and a deeply integrated ownership experience over outright performance or minimalist aesthetics. Another close contender, the Lucid Air Pure, offers an even more impressive 137 MPGe combined, but with a different brand ethos and a less established service network. Within Mercedes-Benz’s own lineup, the EQS 450 4MATIC Sedan, with its dual motors and all-wheel drive, sees its efficiency drop slightly to 92 MPGe combined, highlighting the benefit of the single-motor 450 Plus. When looking at gasoline-powered luxury flagships like the Mercedes-Benz S 500, which manages around 24 MPG combined, the electric advantage of the EQS 450 Plus becomes starkly evident. These are not direct competitors in the eyes of an EQS 450 Plus buyer, as they have already committed to electric propulsion. The comparison, then, is about demonstrating the reliable efficiency within the top tier of luxury EVs, where the EQS 450 Plus confidently holds its ground. You can review EQS MPG across all years for a complete picture of its development.

Tips to maximize efficiency

To truly get the most out of your 2025 Mercedes-Benz EQS 450 Plus, begin by embracing its relaxed character. Smooth acceleration and gentle braking, allowing the car’s advanced regenerative system to do its work, will yield the best results. Aggressive driving drains the battery considerably faster.

Pre-condition your cabin while the vehicle is still plugged in. Heating or cooling the interior using grid power rather than the battery at the start of your journey significantly reduces the load on the high-voltage battery, especially in extreme temperatures.

Maintain proper tire inflation. Under-inflated tires increase rolling resistance, directly impacting range and efficiency. Regularly checking and adjusting tire pressure to the manufacturer’s recommended settings is a simple yet effective practice.

Use the navigation system for route planning, even on familiar routes. The EQS’s intelligent navigation considers topography, traffic, and charging infrastructure to suggest the most efficient path, optimizing energy usage throughout your journey.

Take advantage of the various driving modes. While Comfort mode offers a balanced experience, Eco mode actively limits power output and softens climate control settings to prioritize maximum range. Experiment with these settings to find what works best for your driving style and needs.

For more insights into the efficiency of other models, explore all Mercedes Benz fuel economy data on FuelEconomyHub.com.