The 2017 Mercedes-Benz C300 4matic Coupe’s 25 MPG combined fuel economy isn’t going to set any records. However, consider the car as a stylish two-door; this isn’t about saving fuel, it’s about making a statement. It’s about the way the light catches the curve of the rear, the confident stance, and the subtle growl from the turbocharged four-cylinder as you drive. The fuel economy is simply part of the cost of owning this particular vehicle.

City and highway performance

The EPA estimates 23 MPG in the city and 29 MPG on the highway for this all-wheel-drive C300 Coupe. That split reflects the engine’s tuning and the seven-speed automatic transmission, which balances responsiveness with fuel consumption.

In stop-and-go city driving, the turbocharger spools up frequently, using more fuel. On the open road, the C300 4matic settles into a more efficient cruise, and the transmission uses its higher gears to keep the engine speed low. The all-wheel-drive system also impacts economy slightly compared to the rear-wheel drive versions, but the added traction is worth the tradeoff for many buyers in northern climates.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Mercedes-Benz C300 4matic Coupe is $2,300. This is based on driving 15,000 miles per year and using the national average fuel price when calculated.

Individual fuel costs will vary depending on driving habits and local fuel prices, but this provides a benchmark for potential owners to understand the expense of owning this vehicle. Check all Mercedes Benz fuel economy data to see how the C300 compares to the entire lineup.

Real-world expectations

EPA estimates are a useful baseline, but real-world fuel economy varies. More aggressive driving, frequent short trips, and sustained high speeds on the highway all negatively impact the C300’s fuel consumption.

Owners who want performance and frequently drive using the car’s acceleration may find themselves closer to the lower end of the estimated range, or even slightly below. On the other hand, drivers who drive gently, accelerate smoothly, and maintain consistent speeds often meet or exceed the EPA estimates, especially on longer highway trips.

How it Compares

The C300 4matic Coupe is in a competitive segment. The BMW 430i xDrive Coupe offers similar performance and all-wheel drive but has an EPA-estimated combined MPG of 27. This relatively small difference of 2 MPG could translate to savings over the life of ownership.

The Audi A5 Quattro, another key competitor, achieves a combined MPG of 28. Buyers weighing the C300 against these alternatives will need to consider whether the Mercedes-Benz’s styling and interior design justify the slightly lower fuel economy. Comparing C300 MPG across all years could reveal some differences that help inform a buying decision.

Tips to maximize efficiency

Gentle acceleration helps maximize fuel economy in the turbocharged C300. Avoid aggressive starts and let the engine build speed smoothly, allowing the turbocharger to spool up gradually.

Maintaining a steady speed on the highway improves fuel consumption. Use cruise control to keep a consistent pace and avoid unnecessary acceleration and braking. The C300’s shape is aerodynamic, which is ideal for highway cruising when wind resistance is the biggest obstacle.

Keep your tires properly inflated. Under-inflated tires increase rolling resistance, which forces the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the recommended levels on the driver’s side doorjamb.

Reduce unnecessary weight in the vehicle. Extra cargo adds strain on the engine and reduces fuel efficiency. Remove items that are not essential, such as golf clubs or sporting equipment.

Consider the driving mode. The C300 offers different driving modes, including “Eco” mode, which prioritizes fuel efficiency. Selecting this mode alters the throttle response and shift points to optimize fuel consumption, but decreases performance.