The 2021 Mercedes-Benz AMG E53 4matic Plus Convertible has an official EPA fuel economy rating of 23 MPG combined. While not like a Prius, that number should be understood because this car is a luxurious, performance-oriented convertible designed for spirited driving and open-air enjoyment. It’s a statement, not a commuter appliance. Buyers considering this vehicle prioritize driving experience, style, and prestige over ultimate fuel efficiency. The AMG badge tells you that.

City and highway performance

The EPA breaks down the E53’s fuel consumption further, rating it at 21 MPG in the city and 27 MPG on the highway. The city figure reflects the stop-and-go driving conditions and frequent acceleration that hurt fuel economy. The highway number demonstrates that the E53, with its smooth 9-speed automatic transmission, can achieve respectable efficiency when cruising at a steady speed. The 3.0L inline-6 engine, boosted by a turbocharger and an electric auxiliary compressor, provides ample power at all speeds, contributing to a driving experience that rarely encourages gentle throttle inputs. That turbocharged engine with electric motor is part of what attracts buyers beyond just all Mercedes Benz fuel economy data.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Mercedes-Benz AMG E53 4matic Plus Convertible at $2,500 per year. This figure is based on driving 15,000 miles annually, with a mix of city and highway driving, using the national average fuel price. Keep in mind that this is only an estimate. Your actual fuel costs will vary depending on your driving habits, the type of fuel you use (premium is recommended), and local fuel prices. For an owner of an AMG vehicle, this $2,500 figure is typically considered an acceptable cost of ownership, a worthwhile price to pay for the performance and prestige the E53 offers.

Real-world expectations

EPA figures provide a benchmark, but real-world fuel economy can differ significantly. Aggressive driving, frequent short trips, and extended idling will all reduce fuel economy. Conversely, careful driving, adherence to speed limits, and minimizing idling can help approach the EPA estimates. Owners are likely to experience fuel economy closer to the city rating than the highway rating given the E53’s performance capabilities, especially if they frequently use the car’s performance modes.

How it compares

The AMG E53 Convertible occupies a specific niche, but it’s worth comparing it to other models. For example, the BMW M440i xDrive Convertible offers similar open-top fun with a turbocharged inline-6 and all-wheel drive. The M440i achieves an EPA-rated 25 MPG combined. The differences in MPG matter to those who want a capable convertible. The Audi S5 Cabriolet gets 24 MPG combined. Given that AMG MPG across all years, this E53 is not that bad, but those slight differences in MPG might matter to some buyers.

Tips to maximize efficiency

Given the E53’s turbocharged engine, avoid aggressive acceleration and hard braking. Gradual acceleration and smooth braking will help conserve fuel and improve overall efficiency. Anticipate traffic flow and maintain a steady speed whenever possible. The E53’s advanced powertrain responds best to smooth, deliberate inputs.

Ensure that your tires are properly inflated. Underinflated tires increase rolling resistance, which reduces fuel economy. Check your tire pressure regularly and maintain the recommended pressure listed on the doorjamb.

Minimize idling. Modern engines consume fuel even when idling, so avoid unnecessary idling, such as waiting in parking lots or drive-throughs. Turn off the engine if you anticipate a delay of more than a minute.

Use the car’s driving modes strategically. The E53 offers various driving modes, including a Comfort mode specifically designed for fuel-efficient cruising. Select Comfort mode when performance is not a priority, such as during highway driving or city commutes.

Keep up with regular maintenance. A well-maintained engine operates more efficiently. Follow the manufacturer’s recommended maintenance schedule, including oil changes, air filter replacements, and spark plug replacements.