24 MPG combined is a reasonable, if unremarkable, figure for the 2019 Mercedes-Benz GLC300 4matic with its 2.0L 4-cylinder engine. It’s not trying to be a hypermiler. This is a luxury compact SUV aimed at buyers prioritizing comfort, style, and a premium badge over absolute fuel efficiency. These drivers appreciate the sure-footedness of 4MATIC all-wheel drive and the responsive power delivery, and they understand that comes at a cost, however modest, at the pump. They’re buying a status symbol with practicality, not a Prius.

City and highway performance

The GLC300 4matic earns an EPA rating of 22 MPG in the city and 27 MPG on the highway. The city figure reflects the stop and go nature of urban driving, where the engine spends more time idling and accelerating. The 27 MPG highway rating is achievable on longer trips at consistent speeds, but expect that number to drop if you’re frequently overtaking or driving aggressively. The 9-speed automatic transmission plays an important role in optimizing both city and highway fuel economy, offering a wide range of gears to keep the engine in its most efficient operating range. It intelligently selects the best gear for the driving conditions, ensuring smooth and responsive acceleration while minimizing fuel consumption. Drivers will notice the higher gears being used predominately during highway driving to maximize economy.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2019 Mercedes-Benz GLC300 4matic at $2,400. This calculation is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that your actual fuel costs may vary depending on your driving habits, the type of fuel you use, and local fuel prices. If you primarily drive in the city or have a lead foot, you’ll likely spend more than $2,400 per year. Conversely, if you mostly drive on the highway and practice fuel-efficient driving techniques, you might spend less.

Real-world expectations

While the EPA estimates provide a good baseline, real-world fuel economy often differs. Many GLC300 4matic owners report seeing figures close to the EPA estimates in mixed driving. However, aggressive driving, frequent stop and go traffic, and extreme weather conditions can all negatively impact fuel economy. Conversely, careful driving, optimal tire inflation, and regular maintenance can help you achieve or even exceed the EPA estimates. Remember that the GLC300 is a relatively heavy vehicle with a powerful engine, so it’s important to drive responsibly to maximize fuel efficiency.

How it compares

The GLC300 4matic’s fuel economy is generally competitive within its class. For example, the equivalent BMW X3 xDrive30i also gets around 24 MPG combined. The Acura RDX SH-AWD achieves a similar 23 MPG combined. A Volvo XC60 T5 AWD is rated at an identical 24 MPG combined. This level of MPG is acceptable for the kind of buyer who is not exclusively focused on fuel consumption, but also needs a luxury vehicle with a prestigious brand and plenty of features. For those prioritizing fuel economy above all else, there are more efficient options available, but they often come with compromises in terms of performance, luxury, or all-weather capability. Comparing the GLC300 MPG across all years can help you understand how this model year stacks up, and you can view all Mercedes Benz fuel economy data, too, if you’re curious about alternatives from the same brand.

Tips to maximize efficiency

Take advantage of the GLC300’s ECO drive mode. ECO mode adjusts the throttle response, transmission shift points, and climate control settings to prioritize fuel efficiency. While it might make the car feel slightly less responsive, it can significantly improve your MPG, especially in city driving. It is particularly effective in stop-and-go driving where sudden acceleration is rarely needed.

Monitor your tire pressure regularly. Underinflated tires increase rolling resistance, which puts more strain on the engine and reduces fuel economy. Check your tire pressure at least once a month and inflate them to the recommended pressure level, which can be found on a sticker inside the driver’s side doorjamb.

Avoid aggressive driving habits. Rapid acceleration, hard braking, and high speeds consume more fuel than gradual acceleration, gentle braking, and maintaining a consistent speed. Anticipate traffic flow and avoid unnecessary speeding up and slowing down, which wastes fuel and increases wear and tear on your vehicle.

Keep your vehicle properly maintained. Regular oil changes, air filter replacements, and other routine maintenance tasks ensure that your engine is running efficiently. A well-maintained engine consumes less fuel and emits fewer pollutants. Neglecting maintenance can negatively impact fuel economy and lead to more costly repairs down the road.