26 MPG combined for the 2025 Mercedes-Benz CLE450 4Matic Coupe is an impressive figure for a vehicle designed to combine effortless performance with elegant luxury. This isn’t a stripped-down efficiency special; it’s a genuine grand touring coupe, equipped with a potent inline-six engine, an advanced all-wheel-drive system, and a luxurious interior. This fuel economy rating allows drivers to enjoy both spirited driving and longer journeys without constantly stopping for gas.

Engine and drivetrain efficiency

The 2025 CLE450 4Matic Coupe gets its power from a 3.0-liter turbocharged inline-six engine, boosted by a 48-volt mild-hybrid system. This powertrain produces 375 horsepower and 369 lb-ft of torque. The mild-hybrid system assists the gasoline engine, particularly during acceleration and stop-and-go traffic, improving fuel economy and engine response. Power is sent through a 9-speed automatic transmission to all four wheels via the 4Matic all-wheel-drive system. The transmission’s wide gear ratios keep the engine in its most efficient operating range, whether cruising on the highway or accelerating.

Real-world fuel economy and driving experience

In real-world driving, the CLE450 4Matic Coupe often matches or even slightly exceeds its EPA estimates, particularly on highway cruises. The vehicle’s aerodynamic design, along with features like engine start/stop, further contribute to its efficiency. The cabin remains quiet, even at highway speeds. The ride is comfortable, absorbing road imperfections well, making long trips enjoyable.

Compared to competitors

When looking at the competitive landscape, the 2025 Mercedes-Benz CLE450 4Matic Coupe’s 26 MPG combined rating holds up very well:

• The Audi A5 Coupe Quattro with its 2.0-liter turbocharged four-cylinder engine achieves 27 MPG combined. The CLE450 offers a more powerful six-cylinder engine with only a 1 MPG difference.
• The BMW 440i xDrive Coupe, powered by a 3.0-liter turbocharged inline-six, gets an estimated 25 MPG combined. The CLE450 edges this out by 1 MPG while providing a similar level of performance.

This shows the CLE450 offers a strong balance of performance and fuel economy compared to its main rivals.

Long-term costs and environmental impact

The 26 MPG combined rating means lower fuel costs for owners over the vehicle’s lifespan. While luxury coupes are not typically bought solely for their fuel efficiency, the CLE450’s rating means fewer trips to the gas station. Reduced fuel consumption also means less gas burned, contributing to lower emissions.

Conclusion

The 2025 Mercedes-Benz CLE450 4Matic Coupe’s 26 MPG combined rating proves a powerful and luxurious grand touring coupe can also be efficient. Its advanced powertrain, aerodynamic design, and intelligent all-wheel drive system work together to deliver an admirable fuel economy number without compromising the driving experience Mercedes-Benz owners expect. It stands out in its segment for offering both performance and practical efficiency.