27 MPG combined for the 2025 Mercedes-Benz E350 4MATIC 2.0L 4-cylinder shows its position as a highly capable and efficient luxury sedan. This isn’t just about headline numbers; it’s about providing genuine Mercedes-Benz sophistication, advanced technology, and strong all-weather traction without excessive penalty at the pump. The E-Class has always been the heart of Mercedes-Benz, bridging the gap between compact luxury and ultra-luxury flagships. For the individual who demands refinement, comfort, and a badge that signifies status, but also appreciates intelligent fuel management, the E350 hits a very specific, appealing sweet spot.

City and highway performance

Looking at the E350’s fuel economy reveals a well-engineered balance: 24 MPG in the city and an impressive 33 MPG on the highway. Urban driving, often characterized by stop-and-go traffic and frequent acceleration, typically punishes larger, heavier sedans. The E350’s turbocharged 2.0-liter four-cylinder engine, paired with a 9-speed automatic transmission and a 48-volt mild-hybrid system, manages these conditions with distinct grace. The integrated starter-generator provides a subtle power boost and allows for smoother engine stop/start functionality, which is particularly beneficial for city efficiency. On the open highway, where the powertrain settles into a relaxed cruise, the 33 MPG figure truly shines. This efficiency makes extended road trips less taxing on the wallet and aligns perfectly with the E-Class’s inherent long-distance cruising prowess. The 4MATIC all-wheel drive, a standard feature on this E350, ensures confident grip in adverse conditions, and remarkably, does not significantly detract from its overall efficiency compared to a rear-wheel-drive equivalent, showcasing Mercedes-Benz’s engineering in optimizing drivetrain losses.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,150 for the 2025 Mercedes-Benz E350 4MATIC. This figure is based on driving 15,000 miles per year, a common automotive industry average, and uses national average fuel prices for premium gasoline. For potential owners, this estimate provides a tangible benchmark for ongoing operational expenses. While the E350 requires premium fuel, a common trait among luxury vehicles, its inherent efficiency helps mitigate the higher per-gallon cost. Compared to many competitors that demand premium fuel and deliver lower MPG, the E350’s $2,150 annual fuel cost represents a sensible trade-off for a vehicle of its caliber. This calculated expense clearly frames the economic reality of owning and operating this luxury sedan for those considering it as their daily driver or primary family vehicle.

Real-world expectations

In the real world, achieving the EPA ratings for the 2025 E350 4MATIC is entirely plausible, provided a mindful driving style. Mercedes-Benz’s engineering is typically reliable, and their EPA numbers often reflect what a conscientious driver can achieve. However, aggressive acceleration, consistent high-speed cruising, and heavy use of climate control will inevitably lead to figures slightly below the official estimates. The mild-hybrid system, while aiding efficiency, truly shines in city driving and during coasting scenarios. Those who frequently navigate congested urban environments will appreciate the smooth, nearly imperceptible engagement of the engine stop/start system. Conversely, someone with an extremely lead foot or who primarily drives short, cold trips may find their average MPG closer to the lower end of the spectrum. For the vast majority of E-Class buyers who prioritize a quiet, comfortable, and intelligent driving experience, the E350’s real-world fuel economy should closely mirror, if not exceed, the EPA’s combined rating under normal circumstances.

How it compares

When stacked against its primary rivals, the 2025 Mercedes-Benz E350 4MATIC is efficient. Consider the BMW 530i xDrive, another key player in this segment. The 530i xDrive, with its 2.0L turbo-four and all-wheel drive, achieves 27 MPG combined (24 city / 33 highway), an identical match for the E350. This parity highlights a focused effort by both German luxury giants to deliver efficiency in their core sedan offerings. Moving to Audi, the A6 45 TFSI quattro, also with a 2.0L turbo-four, delivers 26 MPG combined (22 city / 30 highway). This places the E350 and 530i slightly ahead of the A6 in overall efficiency, a notable distinction for buyers cross-shopping these vehicles for long-term ownership costs. Even luxury SUVs with similar engine configurations struggle to match the E350’s sedan-optimized aerodynamics and lower curb weight. For details on all Mercedes Benz fuel economy data, our site has extensive information. The E350’s fuel economy credentials are a significant selling point for buyers who appreciate the traditional sedan form factor and its inherent efficiency advantages, especially when considering E350 MPG across all years.

Tips to maximize efficiency

To truly get the most out of your E350’s fuel efficiency, consistent tire pressure is critical. Under-inflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure at least once a month; the recommended pressures are usually found on a sticker inside the driver’s door jamb. Maintaining proper inflation is a free and effective way to save fuel.

Engage the E350’s ECO driving mode whenever appropriate. This mode optimizes throttle response, transmission shift points, and climate control operation to prioritize fuel economy. While it may slightly dull the car’s sharper responses, it’s ideal for highway cruising or relaxed city driving, allowing the mild-hybrid system to operate most effectively.

Anticipate traffic flow and practice smooth, progressive acceleration and deceleration. Hard braking and rapid acceleration waste fuel. The E350’s refined powertrain rewards a gentle foot, allowing the 9-speed transmission to smoothly find the most efficient gear and the mild-hybrid system to gracefully capture energy during coasting and braking.

Avoid carrying unnecessary weight in the trunk or cabin. While the E-Class is a substantial vehicle, every extra pound requires more energy to move. Removing heavy items like golf clubs or extra gear when not needed can contribute incrementally to better fuel economy, especially over time.

Minimize prolonged idling. The E350’s engine stop/start system is designed to shut down the engine at traffic lights or in congestion, saving fuel. Trust this system and avoid manually overriding it unless absolutely necessary. For longer stops, turning off the engine manually is even more impactful.