27 MPG combined is a perfectly acceptable fuel economy figure for the 2024 Mercedes-Benz C300 4matic. The C300 isn’t chasing hypermiling records. It’s designed for drivers who value a luxurious driving experience and advanced technology in a compact and refined car. Fuel economy is important, but it’s not the primary focus of the car.

City and highway performance

The EPA estimates the C300 4matic will achieve 23 MPG in the city and 33 MPG on the highway. The city figure reflects the stop-and-go nature of urban driving, where the engine frequently idles or operates under low-speed conditions. The 33 MPG highway rating shows the efficiency of the 2.0L turbocharged four-cylinder engine and the 9-speed automatic transmission at steady speeds. The transmission’s numerous gears allow the engine to operate in its most efficient range at various speeds, improving fuel economy during long highway journeys.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,150 for the 2024 Mercedes-Benz C300 4matic. This figure is based on driving 15,000 miles per year and using national average fuel prices. Your actual fuel costs may vary depending on your driving habits, the type of fuel you use, and local fuel prices. Frequent aggressive acceleration or predominantly city driving will increase your expenditure, while smooth acceleration and consistent highway speeds should help you stay close to this estimate. Be sure to check all Mercedes Benz fuel economy data for more information about the brand’s lineup.

Real-world expectations

While the EPA estimates are a useful benchmark, real-world fuel economy often differs. Factors such as driving style, traffic conditions, weather, and even tire pressure can influence fuel consumption. C300 owners can realistically expect to see figures within a reasonable range of the EPA estimates, but consistently achieving the 33 MPG highway rating requires a conscious effort towards efficient driving habits. The car’s all-wheel-drive system, while adding confidence in adverse conditions, does contribute a slight penalty to fuel economy compared to rear-wheel-drive models. If you are interested in the entire model history take a look at the C300 MPG across all years

How it compares

In the competitive compact luxury sedan segment, the C300’s fuel economy is competitive but not class-leading. The BMW 330i xDrive, with its 2.0L turbocharged four-cylinder, achieves a similar 27 MPG combined. The Audi A4 45 TFSI quattro also lands in the same ballpark. The Lexus IS 350, with its V6 engine, is a less fuel-efficient option, typically achieving around 22 MPG combined. The C300 offers a great driving experience and interior quality, and some buyers are willing to accept slightly lower fuel economy for the luxury and technology offered by Mercedes-Benz.

Tips to maximize efficiency

Gentle acceleration can significantly improve fuel economy. Avoid aggressive starts and sudden braking, as these actions consume more fuel. Use the car’s ECO drive mode, which optimizes throttle response and transmission settings for efficiency. This will make a noticeable difference in city driving.

Maintaining proper tire inflation is critical for fuel efficiency. Check your tire pressure regularly and inflate them to the recommended level. Underinflated tires create more rolling resistance, which reduces fuel economy and can also negatively impact handling and tire wear.

Reduce unnecessary weight in the vehicle. Carrying excess cargo in the trunk or backseat adds extra weight, which requires more energy to move the car. Remove any items you don’t need on a regular basis to lighten the load and improve fuel economy.

Plan your trips and avoid peak traffic hours when possible. Stop-and-go traffic consumes significantly more fuel than steady cruising. By planning routes that minimize congestion, you can reduce idling time and improve your overall fuel economy.