27 MPG combined won’t set any records, but it’s a perfectly respectable figure for the 2023 Mercedes-Benz C300 4matic and what it’s designed to do. This isn’t a hyper-efficient hybrid, nor is it a stripped-down economy car. The C300 is a compact luxury sedan, and its buyers prioritize a blend of performance, comfort, and prestige. For those who want the sure-footedness of all-wheel drive wrapped in the three-pointed star, this MPG rating is almost certainly an acceptable compromise.

City and highway performance

The EPA estimates the C300 4matic achieves 24 MPG in the city and 33 MPG on the highway. The difference between these figures highlights where the C300’s 2.0-liter turbocharged four-cylinder engine performs best. In stop-and-go city driving, the engine works harder, especially with the added weight of all-wheel drive. On the open road, however, the C300 benefits from its smooth-shifting 9-speed automatic transmission, which allows the engine to cruise at lower RPMs, maximizing efficiency. Consider those highway miles when evaluating C300 MPG across all years.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2023 Mercedes-Benz C300 4matic is $2,150. This figure is based on driving 15,000 miles per year and assumes current national average fuel prices. Keep in mind that this is just an estimate. Your actual fuel costs may vary depending on your driving habits, the type of fuel you use, and fluctuations in gas prices within your region. If you drive significantly more or less than 15,000 miles annually, you can easily adjust the number up or down to reflect your expected fuel expenditure.

Real-world expectations

While the EPA provides a standardized benchmark, real-world fuel economy often differs. The C300’s official numbers are achievable, but drivers who accelerate quickly or who frequently encounter rush-hour traffic may see figures closer to the low 20s in combined driving. Conversely, those who prioritize smooth acceleration and spend more time on the highway could potentially exceed the EPA’s ratings. Remember that factors like tire pressure, ambient temperature, and even the use of accessories like air conditioning can subtly impact fuel consumption.

How it compares

Compared to its rivals, the C300 4matic’s fuel economy is generally competitive. The BMW 330i xDrive, another all-wheel-drive compact luxury sedan, achieves a similar 28 MPG combined. The Audi A4 quattro, often viewed as a direct competitor, also hovers around 27 MPG combined. Choosing between them often boils down to styling and features. On the other hand, the Lexus IS 350 AWD, known for its smooth V6 engine, typically achieves lower fuel economy in the low 20s combined. The Acura TLX, even with its 2.0T engine, lands around 24 MPG combined with SH-AWD. For those focused on optimized fuel efficiency, the Volvo S60 Recharge plug-in hybrid offers a drastically different gas mileage with its electric range and impressive overall MPG equivalent when factoring in electric driving.

Tips to maximize efficiency

The C300’s 2.0-liter engine responds well to careful driving. Avoid aggressive acceleration and maintain a consistent speed, especially on the highway. Using cruise control can help minimize unnecessary speed fluctuations and optimize fuel consumption on longer trips.

Ensure your tires are properly inflated to the recommended pressure, which can be found on the driver’s side doorjamb. Underinflated tires increase rolling resistance, forcing the engine to work harder and lowering fuel economy by a noticeable margin. Check your tire pressure regularly, as it fluctuates with temperature changes.

Consider using the C300’s driving mode selector. The “Eco” mode adjusts throttle response and transmission shift points to prioritize fuel efficiency. While it might make the car feel slightly less responsive, it can yield improvements in MPG, especially during city driving.

Excess weight impacts fuel economy, so remove any unnecessary items from the trunk and passenger compartment. While it may seem trivial, carrying around extra weight adds up over time and forces the engine to consume more fuel. Consider removing golf clubs or other seldom-used items you may have forgotten about.

Keep up with regular maintenance, including oil changes and air filter replacements. A well-maintained engine runs more efficiently, and clean filters ensure optimal airflow. Refer to the owner’s manual for recommended service intervals or explore all Mercedes Benz fuel economy data for insights.