The 2023 Mercedes-Benz E450 Coupe gets 25 MPG combined. While this isn’t exceptional for fuel economy, even in a segment not known for it, this fuel consumption is part of the overall picture for buyers who value elegant design, a refined driving experience, and the Mercedes-Benz brand. This coupe prioritizes an enjoyable ride over maximum efficiency.

City and highway performance

The EPA estimates for the 2023 E450 Coupe show consistent performance: 23 MPG in the city and 30 MPG on the highway. This small difference suggests the powertrain performs consistently across various driving scenarios. The 3.0L inline-six engine, aided by a mild-hybrid system, provides smooth power and quick acceleration, essential for confident merging and easy cruising. The nine-speed automatic transmission enhances the driving experience, offering smooth gear changes and helping to optimize fuel consumption at higher speeds. The highway figure is respectable for this type of vehicle, suggesting that longer trips won’t be too expensive.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 Mercedes-Benz E450 Coupe at $2,300. 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 ratio of city to highway driving. While $2,300 might give some drivers pause, buyers in this vehicle segment are often less concerned about fuel costs than those shopping for more affordable vehicles; they often prioritize performance and the ownership experience.

Real-world expectations

While the EPA provides a standard, real-world fuel economy can vary. The E450 Coupe’s mild-hybrid system helps improve efficiency, but aggressive driving and frequent short trips can reduce fuel economy. However, consistent highway driving at moderate speeds should allow drivers to get close to or even exceed the EPA’s 30 MPG highway estimate. Factors like tire pressure, outside temperature, and using accessories like air conditioning can also affect fuel consumption. Driving style is the biggest factor influencing how close drivers get to the official MPG figures. You can check E450 MPG across all years to see how this model compares over time.

How it compares

The luxury coupe market has many options, each with different fuel economy results. The BMW 440i Coupe provides a similar driving experience and gets an EPA-estimated 26 MPG combined. The Audi A5 Coupe, with its turbocharged four-cylinder engine, achieves a slightly better 28 MPG combined. The more powerful BMW M4 Coupe’s fuel economy drops to around 19 MPG combined, since its focus is on performance. These differences show the trade-off between power, performance, and efficiency. Potential buyers should consider their priorities and how fuel economy matches their needs and budget. To see the full brand lineup, find all Mercedes Benz fuel economy data for comparison.

Tips to maximize efficiency

The E450 Coupe has selectable drive modes. Choose “Eco” mode when possible. This setting adjusts engine and transmission settings for maximum fuel efficiency by reducing throttle response and shifting to higher gears sooner.

Gentle acceleration and smooth braking are key to minimizing fuel consumption. Avoid quick starts and hard stops, and let the car coast when you can. Predicting traffic and keeping a consistent speed will help.

Make sure your tires are inflated to the recommended pressure, found on a sticker inside the driver’s side door. Underinflated tires increase rolling resistance, which reduces fuel efficiency. Check and adjust tire pressure regularly, especially when the temperature changes.

Remove unnecessary weight from the vehicle. Extra weight increases the engine’s workload, so take out any items from the trunk or backseat that you don’t need. Even small items can add up and affect fuel economy.

Consider cruise control on long highway drives. Keeping a steady speed, instead of constantly speeding up and slowing down, can significantly improve fuel efficiency, even if it seems like it wouldn’t.