103 MPG combined is a headline figure for the 2023 Mercedes-Benz EQS 450 4matic, but it’s important to understand what this number represents. The EQS 450 4matic isn’t sipping gasoline; it’s consuming kilowatt-hours. That 103 MPG is an EPA-estimated miles-per-gallon equivalent (MPGe), a standardized metric designed to allow consumers to compare the energy efficiency of electric vehicles (EVs) to traditional internal combustion engines. It speaks to the remarkable efficiency Mercedes-Benz has extracted from its electric drivetrain in a vehicle prioritized for luxury, technology, and effortless performance. Buyers of the EQS 450 4matic aren’t primarily motivated by fuel savings, but they certainly appreciate the environmental and economic benefits that come with driving a cutting-edge electric sedan.

City and highway performance

The EPA breaks down the EQS 450 4matic’s efficiency further, estimating 101 MPGe in the city and 105 MPGe on the highway. This discrepancy, however small, reflects the nuances of electric vehicle efficiency. In city driving, regenerative braking captures energy during deceleration, feeding it back into the battery and boosting efficiency. Highway driving, with its sustained speeds and less frequent braking, relies more on battery power alone. These figures highlight the EQS 450 4matic’s consistent performance across various driving conditions, making it well-suited for both urban commutes and long-distance journeys. The all-wheel drive system (“4matic” in Mercedes-Benz nomenclature) doesn’t significantly impact these figures, as it’s designed to enhance traction and stability without adding excessive weight or drivetrain loss. The 2023 EQS is a significant step forward in Mercedes-Benz electrification efforts. You can view all Mercedes Benz fuel economy data on our website to compare.

Annual fuel cost

According to the EPA, the estimated annual fuel cost for the 2023 Mercedes-Benz EQS 450 4matic is $700. This figure is based on driving 15,000 miles per year and using national average electricity prices. Because electricity prices vary significantly around the country, your actual cost may be higher or lower.

While $700 is incredibly low compared to similar-sized luxury gasoline vehicles, it is important to remember that upfront vehicle cost is significantly higher. The EPA estimates help consumers understand long-term costs associated with vehicle purchases.

Real-world expectations

While the EPA provides a standardized benchmark, real-world MPGe can vary depending on several factors. Driving style, ambient temperature, terrain, and the use of features like climate control can all impact energy consumption. Aggressive acceleration and high speeds deplete the battery faster, while gentle driving and using regenerative braking to its full potential can extend range. Extreme temperatures, both hot and cold, can also affect battery performance. Owners living in colder climates may notice a decrease in range during winter months due to the energy required to heat the cabin and maintain optimal battery temperature. To compare these figures to other model years, you can view EQS MPG across all years on our website.

How it compares

The EQS 450 4matic’s 103 MPGe stacks up favorably against other luxury EVs, although direct comparisons are tricky. The all-wheel drive Tesla Model S Long Range boasts an EPA-estimated 120 MPGe combined, emphasizing Tesla’s focus on efficiency. However, the Porsche Taycan 4S, positioned as a performance-oriented EV, achieves a lower 79 MPGe combined. The Audi e-tron GT achieves 82 MPGe. These varying figures highlight the different priorities of each manufacturer. The EQS 450 4matic prioritizes a balance of luxury, performance, and range, making it a good option for buyers who want a refined and efficient electric sedan.

Tips to maximize efficiency

Take advantage of the EQS 450 4matic’s regenerative braking system. Experiment with different regeneration levels to find the setting that best suits your driving style and maximizes energy recapture. The default setting is often a good compromise, but more aggressive regeneration can be beneficial in stop-and-go traffic.

Precondition the cabin while the car is plugged in. This allows you to heat or cool the interior using grid power rather than draining the battery, preserving range, especially in extreme temperatures. Use the Mercedes me connect app to schedule preconditioning remotely.

Minimize unnecessary weight in the vehicle. Excess cargo adds to the vehicle’s overall mass, increasing energy consumption. Remove any items you don’t need to carry regularly to improve efficiency.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which reduces efficiency. Check your tire pressure regularly and inflate them to the recommended pressure listed on the doorjamb.

Plan your routes strategically, taking advantage of charging opportunities along your journey. Use navigation apps that display real-time charging station availability and plan your stops accordingly to avoid range anxiety and ensure a smooth trip.