The 2020 Mercedes-Benz AMG C43 4matic Coupe 3.0L 6-cyl achieves 22 MPG combined, which is the reality for those who crave its strong performance and undeniable style. This isn’t a car bought for saving fuel. It’s a statement, a thrill ride, and a luxurious experience in one decidedly sporty package. The C43 Coupe appeals to drivers who prioritize agility, sharp handling, and the distinctive AMG exhaust note over maximizing every last mile per gallon.

City and highway performance

The EPA estimates 19 MPG in the city and 27 MPG on the highway for the AMG C43 Coupe. The city figure reflects the fuel demands of stop-and-go traffic and frequent acceleration where the engine works harder to navigate urban landscapes. The highway figure represents a more consistent speed and less demand on the engine, achieved by cruising at a steady pace and using the efficient 9-speed automatic transmission. However, temper your expectations because this car begs to be driven enthusiastically, and a heavy foot will quickly reduce those highway numbers. The allure of the turbochargers and the responsiveness of the engine make resisting the urge to accelerate quickly a difficult task.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,650 for the 2020 Mercedes-Benz AMG C43 4matic Coupe. This figure is based on driving 15,000 miles per year with a mix of city and highway driving, using national average fuel prices. Your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and local fuel prices. Those who spend more time in city traffic or those who enjoy spirited driving can expect to exceed this annual estimate. See all Mercedes Benz fuel economy data for a broader look.

Real-world expectations

While the EPA provides a standardized benchmark, real-world fuel economy for the AMG C43 Coupe often differs. Aggressive driving, shorter trips where the engine doesn’t reach optimal operating temperature, and even weather conditions impact the numbers you’ll see on the dashboard. Expect figures slightly below the EPA estimates, especially if you frequently tap into the car’s performance. Some drivers may achieve the advertised highway MPG during long road trips, but consistent combined MPG close to 22 will likely require a conscious effort to drive conservatively. Click to see AMG MPG across all years.

How it compares

Competitors like the BMW M440i xDrive Coupe offer similar performance with a slightly better EPA combined rating of 25 MPG. The Audi S5 Coupe, another key rival, manages an EPA-estimated 24 MPG combined. These differences, while seemingly small, can add up over time and might be a factor for buyers who care about fuel consumption. The Porsche 718 Cayman, while offering a different driving experience, posts around 22 MPG combined with its base engine, mirroring the C43 but demanding a purist sports car compromise. These comparisons matter to the C43 buyer because they highlight where performance and luxury intersect with relative efficiency, and demonstrate trade-offs inherent in vehicles with different priorities.

Tips to maximize efficiency

Use the various driving modes offered by the AMG C43. Comfort mode prioritizes fuel efficiency by optimizing shift points and throttle response, making it ideal for everyday commuting and long highway stretches. Sport and Sport+ modes unleash the car’s full potential, but they also dramatically increase fuel consumption.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and reducing fuel economy. Check your tire pressure regularly and maintain the recommended levels found on the doorjamb sticker.

Anticipate traffic flow and avoid unnecessary acceleration and braking. Smooth, consistent driving minimizes fuel wasted on abrupt starts and stops. Keeping a safe distance from other vehicles allows for more gradual deceleration and smoother transitions.

Reduce excess weight in the vehicle. Carrying unnecessary items in the trunk or backseat adds to the car’s overall weight, impacting fuel efficiency. Remove any items you don’t need for your daily driving to lighten the load.

While tempting, resist the urge to constantly engage the paddle shifters for maximum performance. Allowing the 9-speed automatic transmission to manage gear changes in Comfort mode optimizes efficiency for most driving situations. Only use manual shifting when needed for specific driving scenarios.