26 MPG combined won’t win any hypermiling contests, but for the 2017 Mercedes-Benz C300 Coupe, it’s an acceptable compromise. This car prioritizes style, prestige, and a sporty driving experience over squeezing every last mile out of a gallon of premium fuel. C300 Coupe buyers understand this trade-off and prioritize the overall ownership experience over outright fuel efficiency. They want the three-pointed star, the sleek silhouette, and the responsive performance, and they’re willing to pay for it, both at the dealership and at the pump.

City and highway performance

The EPA estimates for the C300 Coupe are 23 MPG in the city and 30 MPG on the highway. The city figure reflects the stop-and-go nature of urban driving, where the engine spends more time idling and accelerating. The 30 MPG highway rating is achievable during steady-state cruising, thanks to the 7-speed automatic transmission which helps keep the engine in its most efficient RPM range at higher speeds. This spread suggests that drivers who primarily commute in heavy city traffic will see fuel economy numbers closer to the lower end of the spectrum, while those with longer highway commutes can expect to approach, or even slightly exceed, the EPA’s highway estimate.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Mercedes-Benz C300 Coupe at $2,250. This figure is based on driving 15,000 miles per year and using the national average fuel price. Keep in mind that this is just an estimate, and your actual fuel costs will vary depending on your driving habits, local fuel prices, and the type of fuel you use. Mercedes-Benz recommends premium fuel for the C300, which typically costs more than regular gasoline, further contributing to the overall expense.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world fuel economy often differs. The C300 Coupe’s turbocharged engine encourages spirited driving; aggressive acceleration and frequent bursts of speed will inevitably reduce fuel efficiency. Consistent driving, combined with careful throttle management, can help you achieve fuel economy closer to the EPA’s ratings. Ultimately, your personal driving style will have a significant impact on the fuel consumption of your C300 Coupe. Tracking your mileage and fuel consumption over time can provide a more accurate picture of your actual fuel costs.

How it compares

In the realm of compact luxury coupes, the C300’s fuel economy is competitive but not class-leading. The BMW 430i Coupe, for example, is rated at 28 MPG combined. The Audi A5 Coupe achieves an EPA-estimated 27 MPG combined. These differences, while seemingly small, can add up over time. However, buyers often weigh these considerations against other factors such as vehicle styling, brand cachet, and driving dynamics. Someone looking for all Mercedes-Benz fuel economy data may consider the C300 a good choice because it delivers better fuel economy than the more powerful AMG variants while still offering an enjoyable driving experience. To consider C300 MPG across all years, look at C300 MPG across all years.

Tips to maximize efficiency

Maintain proper tire inflation, it’s an easy way to improve your C300’s fuel economy. Check your tire pressure regularly and inflate them to the recommended levels, which can be found on the sticker inside the driver’s side doorjamb.

Avoid aggressive driving. Rapid acceleration, hard braking, and high speeds consume more fuel. Smooth and consistent driving habits will not only improve your fuel economy but also extend the life of your brakes and tires.

Reduce unnecessary weight in your C300 Coupe. Carrying extra cargo adds weight, which forces the engine to work harder and consume more fuel. Remove any unnecessary items from your trunk and backseat.

Use cruise control on the highway when appropriate. Maintaining a constant speed can improve fuel efficiency, especially on long, flat stretches of road. Use the cruise control system to manage your speed.

Consider using the ECO driving mode, if equipped. This mode adjusts the engine and transmission settings to prioritize fuel efficiency, often at the expense of performance. While it might make the car feel a bit less responsive, it can help you save fuel during everyday driving without impacting the responsiveness needed in situations where you need to accelerate.