20 MPG combined is the headline figure for the 2025 Mercedes-Benz S580 4MATIC Maybach, and it’s a number that requires context. For a vehicle that represents the pinnacle of executive luxury, a rolling statement of intent, and a mobile sanctuary weighing in excess of 5,000 pounds, 20 MPG isn’t merely acceptable, it shows refined engineering. This isn’t a vehicle bought for its frugality at the pump, but its ability to transport its occupants in unparalleled comfort and power. Those who choose the Maybach S580 are driven by an appreciation for exquisite materials, quietude, and effortless performance, where fuel economy is a secondary, almost tertiary, consideration. It’s an indulgence, yes, but one underpinned by surprisingly efficient modern powertrain technology.

City and highway performance

Looking at the S580 Maybach’s EPA figures, we see a city rating of 16 MPG and a highway rating of 27 MPG. The 16 MPG in city driving reflects the inevitable demands of moving such a substantial vehicle through stop-and-go traffic, particularly with its potent 4.0L V8 twin-turbo engine and standard 4MATIC all-wheel drive system. While the integrated mild-hybrid system certainly assists in mitigating some of the V8’s thirst during low-speed operation and initial acceleration, PHYSICS always have the final say. Conversely, the 27 MPG highway figure underscores the efficiency gains achieved when this magnificent machine settles into a steady cruise. Modern 9-speed automatic transmissions, advanced aerodynamics, and cylinder deactivation technology allow the large V8 to loaf along at highway speeds, sipping fuel rather than guzzling it. This dichotomy perfectly aligns with the Maybach’s mission: quiet, powerful city presence, and effortless, long-distance touring capability.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,900 for the 2025 Mercedes-Benz S580 4MATIC Maybach. This figure is calculated based on an assumed 15,000 miles driven per year, split between city and highway driving, and using national average fuel prices. For a vehicle with a starting price well into the six figures, an annual fuel bill of under $3,000 is hardly a deterrent. Buyers of the S580 Maybach, whether individuals or corporate chauffeurs, prioritize the experience, the prestige, and the exceptional capability over the marginal savings at the pump. The cost of fuel, in their world, is simply another line item in the broader operational expense of owning a vehicle of this caliber, far overshadowed by depreciation, insurance, and maintenance costs.

Real-world expectations

Expect real-world fuel economy for the S580 Maybach to closely mirror, or potentially slightly exceed, the EPA combined rating of 20 MPG, especially if the majority of your driving involves relaxed highway cruising. The 4.0-liter twin-turbo V8, augmented by the EQ Boost mild-hybrid system, is remarkably adept at managing its power output. Aggressive driving, frequent hard accelerations, and prolonged idling in traffic will, as always, cause the MPG to drop closer to the 16 MPG city figure. Conversely, a disciplined driver on open roads will find the 27 MPG highway rating entirely achievable, perhaps even marginally surpassable, thanks to the engine’s ability to run in a more efficient four-cylinder mode under light load. Owners typically operate this vehicle with a smooth, unhurried demeanor, which naturally benefits fuel economy.

How it compares

The 2025 Mercedes-Benz S580 4MATIC Maybach occupies a unique niche, making direct comparisons challenging, but its closest rivals provide valuable context. The Bentley Flying Spur, specifically the V8 model, comes in slightly less efficient with a combined EPA rating of 18 MPG (15 city/20 highway). The Rolls-Royce Ghost, powered by a larger V12, is even more thirsty, typically seeing combined figures around 14 MPG (12 city/18 highway). Comparing it to more conventional, albeit still ultra-luxury, sedans like the standard Mercedes-Benz S500 4MATIC (inline-six with mild-hybrid), which achieves 25 MPG combined, it’s clear the Maybach pays a modest efficiency penalty for its larger V8 and additional weight. However, the S580 Maybach’s 20 MPG combined is a strong showing for a large luxury sedan with a V8, demonstrating that Mercedes-Benz has successfully blended opulent power with admirable efficiency. For a complete look at all Mercedes Benz fuel economy data, our archives provide extensive information. You can also explore S580 MPG across all years for different configurations.

Tips to maximize efficiency

While fuel economy isn’t the primary driver for a Maybach S580 purchase, intelligent driving can still optimize its already respectable figures. Maintaining a smooth, consistent driving style, avoiding sudden accelerations and harsh braking, will allow the 9-speed transmission and mild-hybrid system to operate at their most efficient, minimizing unnecessary fuel consumption.

Use the vehicle’s drive modes. While Comfort mode strikes a good balance, Eco mode specifically tailors throttle response, transmission shift points, and climate control operation to prioritize fuel savings, a useful setting for long highway stretches.

Regular maintenance, as specified in the owner’s manual, ensures the 4.0L V8 and its mild-hybrid components operate at peak efficiency. This includes timely oil changes, air filter replacements, and spark plug inspections, all of which prevent unnecessary strain on the powertrain.

Monitoring tire pressure is a simple yet effective way to improve fuel economy. Underinflated tires increase rolling resistance, forcing the engine to work harder. Always adhere to the manufacturer’s recommended tire pressures found on the door jamb placard.