24 MPG combined might not sound like much until you consider what the 2019 Mercedes-Benz E300 4matic is: a comfortable, technology-filled, all-weather luxury sedan. No one buys an E300 expecting Prius-like efficiency, but reasonable fuel economy is a welcome feature that helps justify the purchase.

City and highway performance

The EPA estimates the 2019 E300 4matic gets 21 MPG in the city and 29 MPG on the highway. These figures reflect the characteristics of its 2.0L turbocharged four-cylinder engine and nine-speed automatic transmission. The engine delivers a healthy 241 horsepower and 273 lb-ft of torque, providing good performance for confident merging and passing. The smooth-shifting nine-speed automatic keeps the engine in its optimal power band, contributing to both performance and fuel efficiency.

In city driving, stop-and-go traffic will naturally impact fuel economy. However, the E300’s engine stop/start system, which shuts off the engine at idle, helps to reduce fuel consumption. On the highway, the E300 4matic settles into a relaxed cruise, with the transmission selecting higher gears to maximize fuel efficiency. The E300 is also equipped with Eco mode which optimizes the drivetrain’s settings for thriftier driving.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Mercedes-Benz E300 4matic at $2,400 per year. This figure assumes 15,000 miles of driving per year and uses national average fuel prices. Individual fuel costs will vary depending on driving habits, local fuel prices, and the type of fuel used (premium fuel is recommended for optimal performance). If you drive significantly more or less than 15,000 miles annually, your fuel costs will be proportionally higher or lower.

The $2,400 figure gives potential buyers a reasonable benchmark for budgeting their transportation expenses. It is worth remembering that this E300 offers all-wheel drive , a feature that improves safety and traction, but typically comes at a slight fuel economy penalty.

Real-world expectations

While the EPA estimates provide a useful baseline, real-world fuel economy can vary. Drivers who frequently accelerate aggressively or spend a significant amount of time in stop-and-go traffic may see lower fuel economy numbers. However, those who prioritize smooth driving and spend more time on the highway may achieve results closer to, or even slightly exceeding, the EPA estimates. Remember that factors such as tire pressure, vehicle maintenance, and the use of accessories like air conditioning can also influence fuel consumption. Reading owner forums for the E300 MPG across all years can provide additional, user-reported data on fuel economy.

How it compares

Compared to its competitors, the 2019 E300 4matic’s fuel economy is competitive, though not class-leading. The BMW 530i xDrive, for example, achieves a slightly better 27 MPG combined, while the Audi A6 2.0T quattro also posts 27 MPG combined. The Lexus ES 350, while not offering all-wheel drive, delivers 26 MPG combined, prioritizing efficiency over performance.

For the E300 buyer, the decision often comes down to more than just MPG. Refinement, technology, and driving dynamics also play an important role. The slight difference in fuel economy between these models may be less important than the specific features and driving experience that each offers. Don’t forget to research all Mercedes Benz fuel economy data for a broader perspective.

Tips to maximize efficiency

Smooth and steady driving is critical. Avoid aggressive acceleration and hard braking, as these habits consume significantly more fuel. Anticipate traffic flow and maintain a consistent speed whenever possible. Using cruise control on the highway can also help to optimize fuel economy.

Ensure your tires are properly inflated. Underinflated tires increase rolling resistance, leading to higher fuel consumption. Check your tire pressure regularly and inflate them to the recommended pressure listed on the doorjamb sticker.

Minimize unnecessary weight. Carrying heavy loads in the trunk or backseat reduces fuel economy. Remove any items you don’t need for daily driving.

Use the E300’s Eco mode. This mode adjusts the engine and transmission settings to prioritize fuel efficiency. The difference may be subtle, but it can contribute to overall savings over time.

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