28 MPG combined isn’t exceptionally efficient, but for the 2017 Mercedes-Benz C300, it’s a reasonable balance. This isn’t a hybrid designed to maximize fuel efficiency. Instead, it’s a compact luxury sedan built for a refined driving experience, a comfortable interior, and the Mercedes-Benz emblem. C300 buyers value prestige, and fuel economy is often a secondary concern.

City and highway performance

The EPA estimates for the C300 with its 2.0L turbocharged 4-cylinder engine and 7-speed automatic transmission are 24 MPG in the city and 34 MPG on the highway. The city MPG reflects typical urban driving with frequent stops and starts. The highway MPG demonstrates the engine’s efficiency at consistent speeds. This difference highlights the C300’s strengths. It handles city driving adequately but excels on longer trips, where its smooth ride and comfortable seating enhance the experience. The C300’s city MPG may disappoint those who primarily commute in city centers.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Mercedes-Benz C300 at $2,050. This is based on driving 15,000 miles annually and using national average fuel prices at the time of calculation. Keep in mind that this is an estimate. Your actual fuel costs will vary based on things like driving habits, fuel type, and local gas prices. Premium fuel is often recommended for the C300’s best performance, which can increase fuel costs further.

Real-world expectations

EPA estimates provide a useful comparison point, but what you see on the road may differ. Variables such as driving style, traffic, and even tire pressure can change your fuel economy. Some C300 owners have reported slightly better highway MPG, especially on long, flat roads. Others have found city MPG to be lower than expected, particularly in areas with heavy traffic. Expect the numbers to be close to the estimates in general, and minor variations should be expected. Aggressive driving will reduce fuel economy because it’s a performance-oriented engine.

How it compares

The C300’s fuel economy is comparable to other compact luxury sedans. As an example, the BMW 330i, with a similar 2.0L turbocharged engine, gets an EPA-estimated 28 MPG combined. The Audi A4 2.0T Quattro is slightly more efficient at 27 MPG combined. The Lexus IS 300, known for Toyota reliability, gets 24 combined MPG. These similar numbers show that fuel economy differences are often small for buyers in this class.

The C300’s buyer often wants superior handling, a well-equipped interior, and a well-known brand and accepts decent fuel economy as part of ownership. If high MPG is the goal, then these buyers would likely consider a hybrid or electric car and ignore all Mercedes Benz fuel economy data altogether. Check C300 MPG across all years to see if later models offer better efficiency.

Tips to maximize efficiency

The C300 isn’t designed for maximum fuel efficiency, but you can improve it. Avoid rapid acceleration and hard braking. The C300’s engine delivers plenty of smooth power, so there’s no need to push it hard to gain speed. Watch traffic patterns and drive at a consistent speed as often as you can.

Routine maintenance also helps. Keep tires inflated. Low pressure increases drag and reduces fuel economy. A properly tuned engine with fresh fluids helps too.

Carefully select the C300’s drive modes. “Eco” mode, if equipped, optimizes engine and transmission settings to improve fuel economy. But don’t just rely on Eco mode. Change your driving habits to prioritize smooth and efficient operation.

Reduce extra weight in the vehicle. Extra cargo increases overall weight, which can decrease fuel economy. Take out anything you don’t regularly need.