The 2021 Mercedes-Benz AMG GT 43 4matic Plus 3.0L 6-cyl isn’t defined by its 22 MPG combined. The AMG GT 43 4matic Plus buyers are drawn to this sleek, coupe-like sedan not because they prioritize fuel efficiency, but because they want performance, a luxurious experience, and the AMG badge. They’re willing to pay for it, at the dealership and at the pump.

City and highway performance

The official EPA estimates peg the GT 43 at 20 MPG in the city and 25 MPG on the highway. These numbers might seem underwhelming compared to more common sedans, but consider the 3.0-liter turbocharged inline-six engine under the hood, plus Mercedes-Benz’s EQ Boost mild-hybrid system. This powertrain delivers a thrilling surge of power, making city driving engaging and highway cruising effortless, even if it means using more gas.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Mercedes-Benz AMG GT 43 4matic Plus at $2,650. This is based on driving 15,000 miles per year, with 45% of those miles driven in the city and 55% on the highway, using national average fuel prices. It’s a large sum, but for the typical AMG GT 43 owner, it’s a predictable expense factored into the cost of ownership.

Real-world expectations

Real-world fuel economy will vary based on driving habits and conditions, as with any vehicle. Expect lower numbers than the EPA estimates if you frequently accelerate hard or drive in stop-and-go traffic. You might achieve slightly better fuel economy if you primarily drive on the highway at moderate speeds. The AMG GT 43’s performance encourages enthusiastic driving, which won’t result in optimal MPG.

How it compares

The AMG GT 43’s fuel economy stands out when compared to its competitors. The BMW M550i xDrive, with its strong V8 engine, achieves a slightly better 20 MPG city and 28 MPG highway. The Audi S7, sporting a twin-turbo V6, is close to the AMG at 18 MPG city and 28 MPG highway. These small differences may not sway buyers deeply entrenched in a particular brand, but they are worth considering. For those researching AMG MPG across all years, this vehicle sits near the middle of the pack. Be sure to review all Mercedes Benz fuel economy data to see the range of vehicles available.

Tips to maximize efficiency

While the AMG GT 43 is not designed for hypermiling, you can take steps to improve fuel economy. Avoid excessive idling. Even a few minutes of idling can reduce MPG, especially in urban environments.

Strategically use the car’s driving modes. “Comfort” mode prioritizes fuel efficiency over performance, while “Sport” and “Sport+” do the opposite. Choosing Comfort during routine commutes can make a small difference.

Maintain your vehicle properly. Regular tire pressure checks and following the recommended maintenance schedule can help ensure fuel efficiency. Underinflated tires increase rolling resistance, which consumes more fuel.

Anticipate traffic flow and avoid abrupt acceleration and braking. Smooth driving is essential for maximizing fuel economy. Aggressive driving wastes fuel and puts wear and tear on your vehicle.