23 MPG combined is not the main reason someone buys a 2017 Mercedes-Benz AMG C43 4matic. This is a performance sedan, a junior AMG, designed to deliver a thrilling driving experience. Fuel efficiency is a secondary consideration, at best, for the buyer who prioritizes brisk acceleration, sharp handling, and the unmistakable growl of a boosted six-cylinder engine over getting more miles per gallon.

City and highway performance

The EPA estimates the 2017 AMG C43 achieves 20 MPG in the city and 28 MPG on the highway. The difference between these figures highlights the car’s character. The city mileage reflects stop-and-go traffic, where the C43’s responsive throttle and eagerness to launch from a standstill use up more gas. The highway MPG, while still not great, demonstrates the efficiency possible when the engine settles into a cruising rhythm, and the 9-speed automatic transmission can use its taller gears. Expect the C43 to feel noticeably more frugal on a longer road trip than slogging through urban congestion.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Mercedes-Benz AMG C43 4matic at $2,500. 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, using national average fuel prices. This cost emphasizes the price associated with owning a performance vehicle like the C43. While some owners may drive less than 15,000 miles annually, aggressive driving styles and frequent engagement of the car’s performance capabilities will almost certainly push that fuel bill higher.

Real-world expectations

Be realistic. While the EPA numbers provide a baseline, your actual fuel economy will vary. If you regularly exploit the C43’s performance potential, expect to see numbers below EPA estimates. A heavy foot and frequent bursts of acceleration will significantly impact fuel consumption. Conversely, a more conservative driving style, prioritizing smooth acceleration and consistent speeds, could yield figures closer to, or even slightly above, the EPA’s ratings. Knowing all Mercedes Benz fuel economy data is important, and understanding your own driving habits is crucial.

How it compares

The AMG C43 exists in a competitive segment of performance sedans. The BMW 340i xDrive, for example, posts EPA ratings of 22 MPG combined, slightly behind the C43. Audi’s S4, another popular choice, matches the C43’s 23 MPG combined. The Acura TLX Type S focuses mostly on handling more than speed and gets slightly better mileage. These differences, while present, are unlikely to be the deciding factor for most buyers in this class. The choice often comes down to brand preference, styling, driving dynamics, and specific features. For buyers interested in AMG MPG across all years, the C43 represents an entry point into high performance.

Tips to maximize efficiency

Resist the urge to constantly use full throttle. The AMG C43 is undeniably fun to drive, but frequent hard acceleration and braking will decimate your fuel economy. Smooth and gradual acceleration, particularly from a standstill, will significantly reduce fuel consumption.

Use the car’s driving modes. The C43 offers various drive modes, including an “Eco” or “Comfort” mode that helps optimize fuel efficiency. Selecting these modes alters throttle response, transmission shift points, and other parameters to prioritize fuel economy over outright performance.

Maintain your vehicle properly. Regular maintenance, including oil changes, air filter replacements, and tire inflation, contributes to optimal engine performance and fuel efficiency. Neglecting maintenance can lead to reduced fuel economy and increased emissions.

Minimize idling. Idling consumes fuel without covering any distance. If you anticipate a prolonged stop, such as waiting in a parking lot, turn off the engine. Modern vehicles are designed to restart quickly and efficiently, so idling is generally unnecessary.

Be mindful of tire pressure. Ensure your tires are properly inflated to the recommended pressure listed on the doorjamb. Underinflated tires increase rolling resistance, which reduces fuel economy. Regularly check and adjust your tire pressure to optimize efficiency.