22 MPG combined won’t win any fuel efficiency awards, but it’s the trade-off for owning the 2022 Mercedes-Benz AMG C43 4matic Convertible. This car prioritizes open-top excitement and the exciting sound of its AMG-enhanced engine over fuel economy. Buyers aren’t comparing it to fuel-efficient cars; they want a luxury convertible with serious performance capabilities, and they’re willing to pay more for gas.

City and highway performance

The EPA estimates the AMG C43 Convertible at 19 MPG in the city and 28 MPG on the highway. The city figure reflects the frequent stops and starts of urban driving, where the engine idles and accelerates more. The highway figure showcases the efficiency of the 9-speed automatic transmission at cruising speeds. Premium fuel is required for optimal performance and engine life. Using the recommended fuel is critical for maintaining fuel economy and engine health.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2022 Mercedes-Benz AMG C43 4matic Convertible at $2,650. This is based on driving 15,000 miles per year and using current national average fuel prices. Keep in mind that this is an estimate, your actual fuel costs may change based on your driving style, the fuel you use, and local fuel prices. Aggressive driving, extended idling, and using lower octane fuel can all hurt fuel economy and increase your annual fuel costs.

Real-world expectations

While the EPA estimates provide a benchmark, real-world fuel economy often differs. Expect the AMG C43 Convertible to get close to the EPA estimates under normal driving conditions. But, driving hard, using the car’s performance, will lower MPG. Driving with the top down will also hurt fuel economy due to increased aerodynamic drag, and weather conditions, like strong headwinds, can also affect fuel consumption.

How it compares

Compared to its rivals, the AMG C43 Convertible’s fuel economy is normal for this type of performance convertible. The BMW M440i Convertible, with its inline-six engine, gets around 25 MPG combined. The Audi S5 Cabriolet, with a turbocharged V6, gets around 24 MPG combined. While the differences may seem small, they add up over time. Potential buyers should also compare AMG MPG across all years. Buyers in this class value performance and luxury over the best fuel economy; a few MPG difference isn’t likely to change their decision much when comparing these vehicles. Consider all Mercedes Benz fuel economy data when deciding.

Tips to maximize efficiency

Avoid hard acceleration and braking. The AMG C43 Convertible is made for performance, but smooth inputs will greatly improve fuel economy. Watch traffic conditions and avoid unnecessary stops and starts. Select the ‘Comfort’ driving mode when not prioritizing maximum performance. This mode changes engine and transmission settings for better efficiency.

Make sure your tires are properly inflated. Underinflated tires increase rolling resistance, which hurts fuel economy. Check your tire pressure often and keep the pressure at the level listed on the driver’s side door jamb. A tire pressure gauge can help you monitor and adjust your tire pressure.

Regular maintenance is critical for the best fuel economy. A well-maintained engine runs more efficiently. Follow the manufacturer’s maintenance schedule, including oil and air filter changes, and new spark plugs. Skipping maintenance can hurt performance and fuel economy.

Keep idling time to a minimum. Idling uses fuel without moving. If you expect to be stopped for more than a minute, turn off the engine. The AMG C43 Convertible’s automatic start-stop system can help with this by shutting off the engine at stoplights and restarting it when you release the brake pedal.

Plan your routes well. Do errands in one trip and avoid rush hour to lower fuel use. Navigation apps can find the best routes, considering traffic and road closures. Driving less saves money on fuel and reduces wear on your vehicle.