The 2019 Mercedes-Benz AMG C43 4matic gets 22 MPG combined. This isn’t a number that will top any fuel-sipping lists, nor is it intended to. The C43 caters to a specific buyer: someone who prioritizes performance and driving engagement in a compact, luxurious package and accepts the fuel cost as a tradeoff. This isn’t the daily driver for the hyper-focused commuter; it’s the weekend warrior, the backroad bomber, the person who enjoys the visceral thrill of a responsive twin-turbo V6, regardless of what the needle on the fuel gauge indicates.

City and highway performance

The EPA estimates for the AMG C43 break down to 19 MPG in the city and 27 MPG on the highway. The city figure reflects the stop-and-go nature of urban driving, which constantly interrupts the engine’s efficiency. The highway number is more palatable, as the 9-speed automatic transmission allows the engine to cruise at lower RPMs, maximizing fuel economy when you’re not constantly dipping into the power reserves. However, let’s be honest: few C43 owners are gingerly feathering the throttle on the open road. The temptation to exploit that 385 horsepower is ever-present. Expect real-world highway figures to dip closer to 23-25 MPG if you’re enjoying the car as intended.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Mercedes-Benz AMG C43 4matic at $2,650. This figure is based on driving 15,000 miles per year, with a 55/45 split between city and highway driving, and assumes national average fuel prices. Premium fuel is required, of course, which further increases the cost. Consider this number a starting point. If your driving is primarily city-based, or if you have a particularly heavy right foot, expect to surpass this figure relatively easily. The C43 rewards aggressive driving, but at the pump, it will extract its dues.

Real-world expectations

Forget the EPA numbers for a moment. Consider the driver. The typical AMG C43 owner is likely someone who values performance above all else. They’re not hypermiling. They appreciate the responsive throttle, the aggressive exhaust note, and the sharp handling. This style of driving will invariably lead to fuel economy figures that are lower than the official estimates. Real-world MPG in the high teens to low twenties is a more realistic expectation for most owners, especially those who spend significant time in urban environments or indulging in spirited weekend drives. While some owners may achieve numbers closer to the EPA estimates by driving conservatively, that’s not what this car is designed to do. The C43 begs to be pushed, and that push comes at a price.

How it compares

When cross-shopping the C43, it’s critical to examine the competition. The Audi S4, another popular performance sedan, achieves an EPA-estimated 24 MPG combined. The BMW M340i xDrive nets around 25 MPG. These modest MPG advantages might influence some buyers, but often the decision comes down to brand preference, driving dynamics, and overall styling. Fuel economy is rarely the deciding factor in this segment. Someone considering the AMG C43 isn’t likely cross-shopping with a Prius; they’re weighing the performance and prestige against a relatively small difference in cost per mile. You can see AMG MPG across all years to see how the C43 has evolved.

Tips to maximize efficiency

While hypermiling the AMG C43 defeats its purpose, some steps can minimize fuel consumption without sacrificing too much driving enjoyment. Be mindful of your right foot. A gentle and progressive application of the throttle, especially during acceleration from a standstill, can significantly improve fuel economy. Avoid unnecessarily aggressive maneuvers and focus on smooth, consistent driving.

Take advantage of the car’s driving modes. The C43 offers various driving modes, including Comfort and Eco, which optimize the engine and transmission settings for fuel efficiency. While these modes might somewhat dull the car’s responsiveness, they can be beneficial for highway cruising or navigating congested city streets when performance isn’t a priority.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, which negatively impacts fuel economy. Check your tire pressure regularly and inflate them to the recommended levels listed on the driver’s side door jamb. This simple step can make a noticeable difference, especially on longer drives, but be sure to do this when the tires are cold for an accurate reading

Minimize unnecessary weight. Carrying excessive cargo in the trunk adds weight, which increases fuel consumption. Remove any items that are not essential for daily driving. This also includes removing any roof racks when not in use, as they disrupt aerodynamics and increase drag.

Consider using cruise control on the highway. While not always ideal, maintaining a steady speed on the highway using cruise control can help optimize fuel efficiency, especially on flatter stretches of road. Avoid excessive braking and acceleration, allowing the car to gradually adjust its speed as needed. Learn more about all Mercedes Benz fuel economy data.