The 2020 Mercedes-Benz AMG C43 4matic with its 3.0L 6-cyl engine gets 22 MPG combined. This number isn’t particularly frugal, but it probably won’t deter the typical C43 buyer. People buy this car for its performance and prestige, the snarling soundtrack of its turbocharged V6, the all-wheel-drive system, and the AMG badge. Fuel efficiency, while perhaps a consideration, likely isn’t their top priority.

City and highway performance

The official EPA estimates are 19 MPG in the city and 27 MPG on the highway. The city figure reflects urban driving with frequent stops, where the C43’s responsive throttle and eagerness to accelerate from every light use more gas. The highway number is more easily achievable during steady-state cruising. But even on the open road, the temptation to use the engine’s readily available power will impact fuel consumption. Drivers should remember that the C43’s all-wheel-drive system enhances grip and stability and contributes to some loss, impacting overall efficiency.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 Mercedes-Benz AMG C43 4matic at $2,650. This is based on driving 15,000 miles per year and using national average fuel prices. This is just an estimate, individual fuel costs will vary based on driving habits, local fuel prices, and the type of fuel used. The C43 requires premium fuel, which is typically more expensive than regular unleaded, which adds to the overall cost of ownership.

Real-world expectations

While the EPA provides a standardized benchmark, real-world MPG figures often differ. Aggressive driving, frequent short trips, and prolonged idling can all significantly reduce fuel economy. C43 owners who frequently drive hard should expect numbers closer to the low end of the EPA estimates. However, drivers who prioritize fuel efficiency and drive more conservatively may approach or even slightly exceed the highway MPG rating. Pay attention to the car’s trip computer and adjust driving habits.

How it compares

The AMG C43 is in the middle in terms of fuel economy compared to its competitors. The BMW M340i xDrive, another performance-oriented sedan with all-wheel drive, gets an EPA-estimated 25 MPG combined. The Audi S4, also with standard all-wheel drive, posts similar figures, around 24 MPG combined. The Cadillac CT5-V offers more power in some configurations and can achieve up to 21 MPG combined with its available 3.0L V6 and rear-wheel drive. These differences probably won’t be deal-breakers for buyers in this segment. The C43 buyer is prioritizing the specific blend of performance, luxury, and the Mercedes-AMG name. For a deeper look, explore AMG MPG across all years. You can also compare the C43 to all of its siblings by browsing all Mercedes Benz fuel economy data.

Tips to maximize efficiency

Pay attention to tire pressure. Make sure your C43’s tires are inflated to the recommended pressure listed on the doorjamb sticker. Underinflated tires increase rolling resistance, which hurts fuel economy. Check and adjust tire pressure regularly, especially when the temperature changes as this causes pressure to change.

Use cruise control effectively. On long highway drives, use cruise control whenever possible to maintain a consistent speed. This minimizes unnecessary acceleration and deceleration, which can waste fuel. Be mindful of traffic and disengage cruise control when necessary for safety.

Anticipate traffic flow. By looking ahead and anticipating traffic, you can avoid abrupt braking and acceleration. Smooth, gradual driving is more fuel-efficient than constantly surging forward and slamming on the brakes. Leave ample space between your car and the vehicle in front to give yourself more time to react.

Avoid aggressive acceleration. The AMG C43’s strong engine is tempting to use, but frequent hard acceleration significantly reduces fuel economy. Accelerate smoothly and gradually, allowing the engine to operate in its most efficient range. Save the full-throttle bursts for occasional moments when you really need the performance.