The 2018 Mercedes-Benz AMG C43 4matic Coupe gets 22 MPG combined. While it won’t top any fuel economy lists, and isn’t a likely alternative for someone considering a Prius, its fuel consumption isn’t excessive for a performance-oriented, all-wheel-drive luxury car that has a twin-turbocharged V6 engine and a 9-speed automatic transmission. This car appeals to emotions just as much as practical considerations; buyers often value excitement and driving pleasure more than saving on gas.

City and highway performance

The EPA estimates the C43 Coupe will achieve 20 MPG in the city and 27 MPG on the highway. The city figure reflects the higher fuel consumption from frequent stops, starts, acceleration, and braking. The highway figure indicates its ability to cruise efficiently. On long trips, drivers can expect fuel economy closer to 27 MPG, especially when using the car’s driving modes to optimize efficiency. A long highway trip shows that the C43 is surprisingly comfortable and competent for long distance driving along with its sporty driving capabilities.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,650 for the 2018 Mercedes-Benz AMG C43 4matic Coupe. This is based on driving 15,000 miles per year, using a national average fuel price. Actual costs will vary depending on driving habits, local fuel prices, and the type of fuel used. Premium fuel is recommended for the C43, so fuel costs are typically higher than for vehicles that use regular fuel. The $2,650 figure is important for potential buyers and those wanting to see all Mercedes Benz fuel economy data.

Real-world expectations

While the EPA estimates provide a benchmark, real-world fuel economy can differ. Expect the 22 MPG combined figure to change based on your driving style. Quick acceleration, using Sport+ mode often, and mostly city driving will lower the average. A more careful driving style and mostly highway miles can bring it closer to, or even slightly above, the EPA estimates. The C43’s performance is always tempting, and resisting the urge to use its power will help achieve the best fuel economy. The C43 offers driving modes that strongly influence efficiency if you consistently drive in the city or on the highway. Learn how to use each mode for maximum efficiency.

How it compares

The AMG C43 is in a competitive class with other performance coupes. The BMW 440i xDrive Coupe, for example, gets an EPA-estimated 25 MPG combined, slightly better than the C43. Audi’s S5 Coupe, rated at 24 MPG combined, gives better fuel economy, but with a different driving feel. The Infiniti Q60 Red Sport 400, with its 400 horsepower twin-turbo V6, gets around 22 MPG combined, similar to the C43. These differences might seem small, but they can add up and matter to buyers who are concerned about fuel costs, even in this performance-focused category. Before deciding, consider seeing AMG MPG across all years.

Tips to maximize efficiency

Smartly use the C43’s driving modes. Comfort mode is for everyday driving and saves gas by changing how the throttle responds and the transmission works. Sport and Sport+ modes are good for performance and feel, but they keep the engine at higher RPMs, which can hurt fuel economy.

Tire pressure is critical for fuel efficiency and safety. Check your tire pressures often and inflate them to the recommended levels. Under-inflated tires increase rolling resistance, which reduces fuel economy by as much as 3%.

Avoid fast acceleration and hard braking. Smooth and consistent driving is safer and saves fuel. Try to predict traffic flow and keep a steady speed.

Regular maintenance is important for the best fuel economy. Keep your engine tuned, and follow the manufacturer’s maintenance schedule for oil changes, air filter replacements, and spark plug replacements.