The 2023 Mercedes-Benz E450 4matic Coupe gets 24 MPG combined. It’s a stylish two-door car with a strong turbocharged six-cylinder engine. For those who value its elegant design and performance, the fuel consumption is likely an acceptable trade-off. The E450 Coupe is geared towards buyers who want a luxurious driving experience and a design that stands out more than ultimate fuel efficiency.

City and highway performance

The EPA estimates the E450 Coupe gets 21 MPG in the city and 30 MPG on the highway. The city MPG reflects typical stop-and-go driving, where the engine idles more often or accelerates from a stop. The 30 MPG highway rating reflects the nine-speed automatic transmission’s efficiency at cruising speeds. The engine achieves its best fuel economy on longer road trips.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 Mercedes-Benz E450 4matic Coupe to be $2,400. This is calculated based on 15,000 miles driven per year and national average fuel prices. Actual costs will vary depending on driving habits, local fuel prices, and the gasoline grade selected. Many E450 owners choose premium fuel to get the most out of the engine, which will increase annual fuel costs.

Real-world expectations

EPA estimates are a good starting point, but real-world fuel economy varies. The E450’s turbocharged engine responds quickly and encourages faster driving, which can lower your MPG. Driving carefully with gentle acceleration and steady speeds can help you match the EPA estimates. Comfort and/or eco modes can also help to achieve the best possible economy numbers. The E450 rewards drivers who are careful to save gas.

How it compares

Fuel economy in luxury coupes is often less important than performance and style, but it’s still relevant. The BMW 440i Coupe, a direct rival, achieves about 25 MPG combined with its turbocharged inline-six engine. The Audi A5 Coupe, using a smaller turbocharged four-cylinder, gets slightly better fuel economy with an estimated 28 MPG combined. However, E450 buyers might prioritize the Mercedes-Benz’s luxury, performance, and design more than saving every last bit of fuel. For higher fuel efficiency, the hybrid Lexus RC 300h gets an estimated 32 MPG combined, but offers a different driving feel than the E450. You can also view E450 MPG across all years.

Tips to maximize efficiency

Use the drive mode selector to optimize fuel efficiency. Choosing “Comfort” or “Eco” mode adjusts the throttle response and shift points. These modes promote smoother acceleration and earlier upshifts, improving MPG for daily driving.

Maintain a moderate speed on the highway. As speed increases, wind resistance also rises a lot, so driving at a steady, reasonable speed will noticeably increase fuel efficiency. Cruise control helps keep a consistent speed, reducing unnecessary acceleration and braking.

Keep your tires properly inflated. Underinflated tires increase rolling resistance. This makes the engine work harder thus consuming additional fuel. Regularly check tire pressures and inflate them to the levels listed on the driver’s side doorjamb.

Reduce extra weight in the car. Extra cargo in the trunk or backseat adds weight, which reduces fuel economy. Remove anything you don’t need to lighten the load and improve MPG. Remove any roof racks if they aren’t needed to further decrease drag.

Follow the factory maintenance schedule. A well-maintained engine runs more efficiently. Stick to the recommended maintenance schedule in the owner’s manual, including regular oil changes and air filter replacements. Skipping these tasks can hurt fuel economy and lead to bigger problems. For all Mercedes Benz fuel economy data, check different models and years to get the best comparison.