26 MPG combined is a respectable figure for the 2020 Mercedes-Benz C300 4matic, but C300 buyers have likely already reconciled that number. People don’t choose this sedan solely for its fuel efficiency; they choose it for the brand, the driving experience, and the Mercedes star. The C300 4matic is an example of attainable luxury, and while 26 MPG isn’t class-leading, it’s a cost most are willing to pay for the car.

City and highway performance

The EPA estimates for the 2020 C300 4matic are 23 MPG in the city and 33 MPG on the highway. The city figure reflects stop-and-go driving, where the 2.0L turbocharged four-cylinder engine and nine-speed automatic transmission work harder. The highway MPG demonstrates the engine’s efficiency at cruising speeds, especially when the transmission is in its higher gears. The 4matic all-wheel-drive system provides added traction and stability, but it contributes slightly to higher fuel consumption compared to rear-wheel-drive models. If you drive a lot on the highway, you might see numbers close to the EPA estimate. If you spend most of your time in urban environments, expect to be closer to 23 MPG. For a better picture of this model’s efficiency, be sure to check out C300 MPG across all years.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 Mercedes-Benz C300 4matic at $2,250. This calculation is based on driving 15,000 miles per year and using national average fuel prices. The actual amount you spend on fuel will vary depending on your driving habits, the type of roads you drive on, and fuel prices in your area. This is just an estimate. If you drive significantly more or less than 15,000 miles per year, that figure will change proportionally. If fuel prices in your region are higher than the national average, you’ll likely spend more.

Real-world expectations

Real-world fuel economy can vary widely. Aggressive driving, frequent short trips, and carrying heavy loads can negatively impact fuel consumption. Smooth acceleration, consistent speed, and avoiding unnecessary idling can help you achieve better mileage. Drivers report numbers very close to the combined 26 MPG. The C300 4matic balances performance and efficiency. If you want better fuel economy, adjust your driving style.

How it compares

The 2020 C300 4matic’s fuel economy is in the middle of its class. For example, the BMW 330i xDrive also achieves a combined 26 MPG. The Acura TLX 2.0T SH-AWD achieves 24 MPG combined. The Audi A4 quattro scores 27 MPG. These differences might seem small, but they can add up over a year. This comparison matters to C300 buyers, but it’s often a secondary concern. More important are the driving dynamics, interior quality, and brand image. When evaluating fuel efficiency across the Mercedes-Benz lineup, you can find all Mercedes Benz fuel economy data available.

Tips to maximize efficiency

Use the C300’s driving modes. The “Eco” mode optimizes the engine and transmission settings for fuel efficiency, which can improve mileage on longer drives where performance isn’t as important.

Make sure your tires are properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and burn more fuel. Check your tire pressure regularly and maintain the recommended levels on the tire placard.

Minimize idling. Idling consumes fuel. If you’re stopped for more than a minute, turn off the engine. Modern cars have start-stop functionality, but you can save even more fuel if you manually switch off the engine when appropriate.

Use cruise control on the highway. Consistent speed is more fuel-efficient than accelerating and decelerating. Cruise control helps you stay at a steady pace, reducing fuel consumption.

Lighten your load. Remove unnecessary items from your trunk because extra weight puts a strain on the engine and reduces fuel economy. A lighter car requires less energy to move.