13 MPG combined. Nobody buys a 2017 Mercedes-Benz G550 for its fuel efficiency. They buy it for its imposing presence, its go-anywhere capability, and its unapologetic old-school charm. The fuel consumption is simply what you pay to be in this very exclusive club. Performance, luxury, and iconic styling are more important than frequent trips to the gas station.

City and highway performance

The EPA estimates the 2017 G550 at 13 MPG in the city and 14 MPG on the highway. A strong 4.0L 8-cylinder engine, connected to a 7-speed automatic transmission, gives the G550 impressive power and acceleration in spite of its weight and boxy shape. Those aerodynamics define the G-Wagen, and also make it thirsty for fuel. The focus here is on brute force and off-road ability, not sleek efficiency. Drivers in stop-and-go traffic will likely see numbers close to 13 MPG, while those with longer highway commutes might achieve 14 MPG. Sustained high speeds will quickly negate any gains.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 G550 at $4,450. This is based on driving 15,000 miles per year and using national average fuel prices, which change. This highlights the G550’s position as a luxury. For those who can afford a vehicle like this, the fuel bill is usually not the biggest concern. Think of it as another membership fee in the G-Wagen club.

Real-world expectations

EPA estimates provide a baseline, but real-world MPG for the 2017 G550 often falls below those numbers. Aggressive driving, frequent off-roading, and the inefficiency of a large, boxy vehicle all lower fuel economy. Owners report numbers from 10 to 13 MPG in mixed driving. Be aware that achieving the EPA estimates consistently may be difficult. If you’re tracking fuel costs closely, you’re probably not the target customer for a G550. See G550 MPG across all years here.

How it compares

The G550’s fuel economy is among the worst compared to other luxury SUVs. The Land Rover Range Rover, especially models with the supercharged V8, offers slightly better (but still poor) fuel economy, around 16 MPG combined. A Porsche Cayenne, even with a performance-oriented engine, can achieve 18-20 MPG combined, a significant improvement. Even the larger Cadillac Escalade, despite its size and V8 engine, often achieves around 17 MPG on the highway.

None of these vehicles have the unique character or off-road ability of the G550. For buyers considering the G550, the comparison isn’t about maximizing MPGs, it’s about accepting the tradeoff for its unique qualities. Those seeking better fuel economy within the Mercedes-Benz brand should examine all Mercedes Benz fuel economy data to see alternatives like the GLE or GLS models.

Tips to maximize efficiency

While maximizing fuel efficiency isn’t a big concern for G550 owners, you can still slightly improve MPG. Gentle acceleration and avoiding hard braking can help reduce fuel consumption, especially in city driving. The G550’s weight and size hurt fuel economy more with aggressive driving.

Ensure the tires are properly inflated. The G550’s large tires need specific pressures for optimal rolling resistance and fuel efficiency. Look at the sticker inside the driver’s side door for the recommended tire pressure and check them regularly.

Remove unnecessary weight. Removing cargo from the vehicle can marginally improve fuel economy. Every little bit helps combat the G550’s weight.

Plan routes strategically. Avoiding stop-and-go traffic and choosing routes with consistent speeds can improve fuel economy, particularly on longer journeys. Use navigation apps that provide real-time traffic updates to avoid congestion.

Be mindful of using four-wheel drive unnecessarily. Only use four-wheel drive when needed for off-road conditions or bad weather. Driving in four-wheel drive on dry pavement increases fuel consumption and tire wear.