17 MPG combined is a hard number to swallow for most modern vehicles, but the 2021 Mercedes-Benz AMG GLC63 4matic Plus isn’t built for those who want to save gas. This compact SUV isn’t about squeezing every last drop of fuel; it’s about raw, unadulterated performance coupled with practicality. Its target audience, affluent enthusiasts who want power and cargo space, prioritize acceleration and track-inspired handling over fuel savings. They want both performance and utility and are willing to pay for it, even if that means frequent trips to the gas station.

City and highway performance

The official EPA estimates peg the AMG GLC63 at 15 MPG in the city and 22 MPG on the highway. This difference reflects the GLC63’s dual nature. In stop-and-go city traffic, the powerful 4.0L V8 engine with its twin turbochargers is constantly working to overcome the car’s weight and the inefficient nature of urban driving.

On the open highway, however, the nine-speed automatic transmission allows the engine to run at a lower RPM, which improves fuel efficiency as long as you resist the urge to accelerate hard. Drivers in urban areas will likely see fuel economy at the low end of the official range, while those who spend more time on the highway may see slightly better results.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2021 Mercedes-Benz AMG GLC63 4matic Plus is $3,400. This figure assumes 15,000 miles per year, with 55% of those miles in the city and 45% on the highway, using national average fuel prices for premium gasoline. The AMG GLC63 requires premium fuel to deliver its performance and protect its turbocharged engine with electric motor. This SUV is not for those on a tight budget. The fuel costs are part of the price for the performance, luxury, and practicality it offers.

Real-world expectations

The EPA provides a standard, but real-world fuel economy can change based on driving style, road conditions, and maintenance. Aggressive acceleration, frequent hard braking, and using the AMG GLC63’s performance features will lead to lower fuel economy than the EPA estimates. A more gentle driving style, regular maintenance, and correct tire inflation may allow drivers to approach the EPA figures, although exceeding them is unlikely. Remember that a heavy foot reduces MPG. The payoff is exhilarating acceleration and handling when you use the car’s potential.

How it compares

The 2021 AMG GLC63 isn’t the only high-performance SUV. Comparing it to rivals shows the trade-off between power and economy. The BMW X3 M, with its inline-six engine, gets 16 MPG city and 23 MPG highway. The Alfa Romeo Stelvio Quadrifoglio, with its Ferrari-derived V6, gets around 17 MPG city and 23 MPG highway. The Porsche Macan Turbo gets about 17 MPG city and 23 MPG highway in its most recent version. These small differences might not sway a buyer drawn to the AMG’s styling, sound, and features. For those interested in seeing AMG MPG across all years, there is information available.

Tips to maximize efficiency

Getting Prius-like fuel consumption in the AMG GLC63 is not possible, but some things can help minimize fuel consumption. Avoid accelerating and braking hard. Smooth inputs will allow the engine to run more efficiently and reduce fuel use. Use the car’s driving modes. “Comfort” mode often reduces throttle response and optimizes shift points for better fuel economy.

Make sure your tires are inflated well. Underinflated tires increase rolling resistance, making the engine work harder and consume more fuel. Check tire pressure often and inflate them to the levels in the owner’s manual. and minimize idling. Letting the engine idle uses fuel without going anywhere. If you expect to be stopped for more than a minute, turn off the engine.

Removing cargo from the vehicle can slightly improve fuel economy, as the engine has less weight to move around. Maintain your vehicle following the manufacturer’s instructions. Regular oil changes, air filter replacements, and other maintenance will help the engine run efficiently and prevent performance issues that could hurt fuel economy. If you are looking for all Mercedes Benz fuel economy data, check the manufacturer’s official website.

The 2021 Mercedes-Benz AMG GLC63 4matic Plus prioritizes performance and driving enjoyment, and its fuel economy shows that. Buyers of this vehicle know they’re choosing thrilling performance and a capable SUV in exchange for more frequent trips to the gas station.