The 2022 Mercedes-Benz C300 4matic Coupe gets 25 MPG combined, which isn’t going to win any fuel-sipping awards, but that’s the figure you’ll get. It’s a reasonable compromise for buyers who prioritize style and a premium driving experience over outright efficiency. The C300 Coupe appeals to those who value a sporty, luxurious two-door with the added confidence of all-wheel drive. These buyers understand they’re paying a premium for the badge and the design, and slightly above-average fuel consumption is simply part of the cost.

City and highway performance

The EPA estimates the C300 Coupe 4matic will achieve 22 MPG in the city and 31 MPG on the highway. The city figure reflects the inherent inefficiencies of stop-and-go driving, where the turbocharged 2.0L engine spends more time idling and accelerating. The highway number is more appealing, showcasing the benefits of the nine-speed automatic transmission that allows the engine to cruise at lower RPMs, improving fuel efficiency on longer journeys. It’s adequate for sustained highway driving, where the C300 Coupe is likely to spend a good portion of its time when escaping the city.

Annual fuel cost

Based on the EPA’s estimates, the annual fuel cost for the 2022 Mercedes-Benz C300 4matic Coupe is $2,300. This figure is calculated assuming 15,000 miles of driving per year and using the national average fuel price. Keep in mind that this is just an estimate, and your actual fuel cost can vary depending on your individual driving habits, the type of fuel you use, and fluctuations in gas prices. If you drive significantly more than 15,000 miles annually, or if fuel prices in your area are higher than the national average, your annual fuel expenses will likely exceed $2,300. If you drive less and live in an area with lower gas prices, you could spend less.

Real-world expectations

While the EPA estimates provide a useful benchmark, real-world fuel economy can often differ. The C300 Coupe’s turbocharged engine is responsive, encouraging drivers to tap into its performance potential. Frequent use of the turbo boost will inevitably decrease fuel efficiency. Traffic congestion and weather conditions can negatively impact fuel consumption. Owners who prioritize smooth, consistent acceleration and anticipate traffic flow can likely get closer to the EPA estimates. Checking C300 MPG across all years in owner forums reveals a wide range of experiences, highlighting the impact of individual driving styles on fuel economy. Most owners report figures slightly below the EPA estimates, especially in mixed driving conditions.

How it compares

Compared to its rivals, the C300 Coupe’s fuel economy is competitive but not class-leading. The BMW 430i xDrive Coupe, another popular choice in this segment, achieves a similar 28 MPG combined. The Audi A5 Coupe boasts an EPA rating of 28 MPG combined as well. These small differences likely won’t sway buyers significantly, as the decision often comes down to styling preferences, brand loyalty, and the overall driving experience. The Lexus RC 300 AWD comes in lower at 22 MPG combined. Buyers exploring all Mercedes Benz fuel economy data will note that even within the Mercedes lineup, there are more efficient options, but none offer the same blend of style and all-weather capability in a two-door coupe.

Tips to maximize efficiency

Use the C300’s drive modes. The “Comfort” mode optimizes the car for fuel efficiency by adjusting throttle response and shift points. Sport mode is fun, but it compromises fuel economy in urban environments. It is also important to regularly check and maintain proper tire pressure. Underinflated tires increase rolling resistance, leading to decreased fuel efficiency. Refer to the sticker on the driver’s side doorjamb for the recommended tire pressure.

Avoid hard acceleration and braking. Gradual acceleration and anticipating traffic flow will help you conserve fuel. Smooth, consistent driving minimizes the engine’s workload and reduces the need for sudden bursts of power. Remove unnecessary weight from the vehicle. Extra cargo in the trunk or rear seats adds to the vehicle’s overall weight, forcing the engine to work harder and consume more fuel.

Consider using cruise control on the highway. Maintaining a consistent speed eliminates the minor speed fluctuations that can waste fuel. Cruise control helps optimize fuel efficiency during long highway stretches. Avoid extended idling. If you anticipate being stopped for more than a minute, turn off the engine. Excessive idling consumes fuel without contributing to your mileage.

Keep up with scheduled maintenance. A well-maintained engine is a more efficient engine. Regular oil changes, air filter replacements, and spark plug replacements can all contribute to improved fuel economy over the long term. Follow Mercedes-Benz’s recommended maintenance schedule.