19 MPG combined isn’t going to win any fuel economy contests, but let’s be realistic. The 2021 Mercedes-Benz S580 4matic Maybach isn’t about sipping fuel; it’s about transporting occupants in unparalleled luxury and effortless style. This car prioritizes refreshed, coddled arrival over saving money at the pump. The target demographic isn’t cross-shopping with Prius owners, and someone writing a check for this vehicle understands that fuel efficiency isn’t its main goal. This is a flagship automobile, and the fuel consumption is simply a cost of doing business.

City and highway performance

The EPA estimates of 16 MPG in the city and 24 MPG on the highway accurately show the S580 Maybach’s fuel usage in different driving. The city figure reflects moving over 5,200 pounds of steel, leather, and technology through stop-and-go traffic. The 4.0L twin-turbo V8 works hard to provide the expected acceleration. However, the 24 MPG highway figure demonstrates that the smooth-shifting 9-speed automatic transmission and refined aerodynamics allow efficient cruising on the open road. These figures depend on restrained driving, which can be hard given the engine’s power.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Mercedes-Benz S580 4matic Maybach at $3,050. This is driving 15,000 miles per year, mixing city and highway driving, and using national average premium gasoline prices, which this vehicle requires. The $3,050 annual fuel cost will be a small part of overall ownership for most Maybach buyers, compared to depreciation, insurance, maintenance, and other expenses. Fuel prices fluctuate, and your driving will impact what you spend.

Real-world expectations

S580 Maybach drivers probably won’t get 16 MPG in heavy city traffic. Aggressive driving and engine power use will lower highway numbers below 24 MPG. However, expecting figures close to the official ratings with a moderate driving style is reasonable. Many owners will have chauffeurs, distancing themselves from fuel consumption. The S-Class long wheelbase, and its Maybach variant, is built for comfort first, and economy much later.

How it compares

Compared to other ultra-luxury sedans, the S580 Maybach’s fuel economy is typical. The Bentley Flying Spur V8, for example, achieves roughly the same MPG. The Rolls-Royce Ghost posts similar or slightly worse numbers. The Maybach offers similar performance and luxury to its British competitors while being slightly more fuel efficient than some configurations. The BMW M760i, with its V12 engine, shows even lower economy. Someone considering all Mercedes Benz fuel economy data might also look at the standard S580, but that isn’t how the Maybach buyer thinks. To that customer, interior space, rear-seat appointments, and brand prestige are more than a 1-2 MPG gain; buyers more interested in value are already searching S580 MPG across all years.

Tips to maximize efficiency

While fuel efficiency isn’t the main concern for most S580 Maybach owners, small changes can help get more miles from each premium gallon. Limit idling, especially during cold starts, as this is when the engine consumes the most fuel. A cold engine is less efficient, and the S580’s V8 is no exception.

Ensure tires are inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. The correct tire pressure is on a sticker on the driver’s side doorjamb. Avoid carrying unnecessary weight. Every extra pound requires more energy to accelerate and maintain speed.

Use the car’s driving modes carefully. “Comfort” or “Eco” modes will prioritize fuel efficiency by adjusting throttle response and transmission shift points. Resist flooring the accelerator. Smooth acceleration will conserve fuel, whereas flooring it will reduce fuel economy.

Finally, consider the route. Avoiding stop-and-go traffic and choosing routes with more consistent speeds will improve fuel consumption. Highway driving generally yields better fuel economy than city driving, so choose the highway when possible, even if it adds distance.