The 2023 Mercedes-Benz AMG GLC43 4MATIC Coupe gets 20 MPG combined, a crucial factor to consider even though it’s not the vehicle’s main selling point. This isn’t a budget commuter car. The GLC43 Coupe appeals to drivers who want performance, style, and luxury, and who are willing to accept less fuel economy for that. They are attracted by the AMG badge, the potent powertrain, and the distinctive coupe roofline, making fuel efficiency less important than the driving experience.

City and highway performance

The EPA estimates are 17 MPG in the city and 24 MPG on the highway for the AMG GLC43 Coupe. The lower city figure reflects stop-and-go driving, where the engine works harder, overcoming the vehicle’s weight and frequent acceleration. The 24 MPG highway estimate is more optimistic and achievable with consistent speeds and less aggressive driving. Expect to get close to that number on longer road trips, but remember that using the accelerator enthusiastically will quickly reduce that figure. This powertrain performs best when driven assertively.

Annual fuel cost

The EPA calculates the annual fuel cost for the 2023 Mercedes-Benz AMG GLC43 Coupe at $2,900. This figure is based on driving 15,000 miles per year, with 55% of those miles driven in the city and 45% on the highway, and using the national average fuel price. Actual fuel costs can vary a lot depending on driving habits, local fuel prices, and the grade of fuel used (premium is recommended for optimal performance in the GLC43). That $2,900 figure is a baseline, but individual experiences may differ.

Real-world expectations

Realistic driving will likely result in fuel economy numbers that are a bit below the EPA estimates. The AMG’s 3.0-liter turbocharged V6 engine is tempting to use, and its performance capabilities will impact fuel consumption. Drivers who often accelerate quickly or encounter heavy traffic can expect to see numbers closer to the 17 MPG city figure, even on mixed driving routes. Highway figures are more attainable, but only with a conscious effort to maintain consistent speeds and avoid aggressive passing. Consider the EPA numbers to be a best-case scenario.

How it compares

Compared to other performance SUVs and coupe-SUVs, the AMG GLC43’s fuel economy is typical for its segment, when considering its performance. The BMW X4 M40i, for example, is rated at 21 MPG combined, a slight advantage over the GLC43. The Porsche Macan S comes in at 19 MPG combined. The Audi SQ5 achieves a similar 21 MPG combined. These differences can add up over time, but the decision often depends on preferences regarding handling, styling, and overall driving. Buyers also might want to compare all Mercedes Benz fuel economy data as well as AMG MPG across all years to see the trend of their vehicles.

Tips to maximize efficiency

Take advantage of the GLC43’s driving modes. Selecting “Comfort” mode can dampen throttle response and optimize shift points for fuel efficiency. While this mode won’t unlock Prius-like MPG, it can make a noticeable difference in everyday driving, especially when cruising at constant speeds.

Monitor your tire pressure regularly. Properly inflated tires reduce rolling resistance, which translates to better fuel economy. Check the tire pressure recommendation on the doorjamb and inflate your tires accordingly. Even a slight drop in tire pressure can negatively impact fuel consumption.

Avoid unnecessary idling. Modern engines are more efficient when running than when idling. If you anticipate being stopped for more than a minute or two, turn off the engine. This simple habit can save a surprising amount of fuel, especially in urban environments.

Anticipate traffic flow and drive smoothly. Avoid sudden acceleration and braking, as these actions consume more fuel. By maintaining a steady pace and anticipating changes in traffic, you can minimize unnecessary fuel usage and optimize the powertrain’s efficiency.

Be mindful of cargo weight. The heavier the vehicle, the more fuel it consumes. Remove any unnecessary items from the trunk or cargo area to reduce weight and improve fuel economy and avoid roof racks or carriers if not absolutely necessary.