The 2016 Mercedes-Benz E400 4matic Coupe gets a combined fuel economy of 23 MPG. That number isn’t going to win any awards for hybrids or EVs, but it’s acceptable for a sleek, powerful luxury coupe designed to turn heads and deliver effortless performance in all conditions. This car isn’t about hyper-miling. It’s about refined style and a comfortable, confident driving experience, and its fuel economy reflects that balance.

City and highway performance

The E400 4matic Coupe’s EPA-estimated fuel economy breaks down to 20 MPG in the city and 28 MPG on the highway. The city figure reflects the demands of stop-and-go traffic, where the 3.0L turbocharged V6 engine works harder. The highway number shows the benefit of the car’s aerodynamic design and efficient 7-speed automatic transmission when cruising at a consistent speed. Drivers who spend more time on the open road will see better fuel economy than those who primarily navigate urban environments. The “4matic” all-wheel-drive system adds weight and complexity compared to a rear-wheel-drive setup, which will slightly reduce fuel economy.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2016 Mercedes-Benz E400 4matic Coupe is $2,500. This figure is based on driving 15,000 miles per year and using the national average fuel price at the time of calculation. If you drive more miles or live in an area with higher fuel prices, your actual costs will be higher. Driving fewer miles or living where fuel is cheaper will lower your annual fuel expenditure. The EPA provides this figure as a baseline comparison to help buyers understand the relative cost of ownership when weighing different vehicles.

Real-world expectations

EPA estimates provide a useful benchmark, but real-world fuel economy can vary significantly depending on driving habits, road conditions, and even the weather. Aggressive acceleration, frequent braking, and extended idling will negatively impact fuel efficiency. Maintaining proper tire inflation and keeping up with scheduled maintenance, including air filter replacements, can help optimize fuel economy. Many E400 4matic Coupe drivers report figures that align closely with the EPA estimates, but some may see slightly lower or higher numbers depending on their individual driving styles and circumstances. Owners looking for ways to compare the E400 MPG across all years can find the details to help them in their search.

How it compares

Compared to other luxury coupes in its class, the 2016 Mercedes-Benz E400 4matic Coupe’s fuel economy is competitive. For example, the 2016 BMW 435i xDrive Coupe, a direct competitor, achieves a similar 25 MPG combined with its turbocharged inline-six engine. The Audi A5, another popular choice, offers around 25 MPG combined with its turbocharged four-cylinder engine making it a slightly more efficient option. Some competitors might offer marginally better fuel economy, but the E400 appeals to someone who prioritizes the smoothness and power delivery of a six-cylinder engine, the confidence of all-wheel drive, and the classic elegance of Mercedes-Benz. These buyers understand the trade-offs involved and are willing to accept the car’s fuel economy in exchange for its unique combination of attributes. Those same buyers may want to compare the Mercedes Benz fuel economy data with other similar vehicles.

Tips to maximize efficiency

Use the E400’s “Eco” driving mode. This mode adjusts the engine and transmission settings to prioritize fuel efficiency, resulting in smoother acceleration and earlier upshifts. Using Eco mode in everyday driving can improve your overall gas mileage without sacrificing too much performance.

Avoid unnecessary idling. If you’re stopped for more than a minute or two, turn off the engine. Modern engines are designed to restart quickly and efficiently, and idling for long periods wastes fuel and increases emissions. This is relevant for drivers who frequently encounter stop-and-go traffic.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and inflate them to the recommended level, which can be found on a sticker inside the driver’s side door or in the owner’s manual. Correct tire pressure also improves handling and extends tire life.

Drive smoothly and anticipate traffic flow. Avoid sudden acceleration and braking, as these actions consume more fuel. By anticipating traffic changes and maintaining a consistent speed, you can minimize fuel waste. Try to maintain a steady pace on the highway and avoid constantly changing lanes, as this can also negatively impact fuel economy.