The 2023 Mercedes-Benz GLC300 4matic, equipped with its 2.0L 4-cylinder engine, gets a combined fuel economy of 26 MPG. This figure isn’t extremely fuel efficient, and that’s not the goal. The GLC300 4matic is for buyers who want luxury, technology, and a confident driving experience more than maximum efficiency. They value the all-weather security of 4matic all-wheel drive and are willing to accept slightly less fuel economy for the prestige and features of a Mercedes-Benz.

City and highway performance

The EPA estimates the GLC300 4matic will get 23 MPG in the city and 31 MPG on the highway. The city figure is typical for a small luxury SUV with all-wheel drive, due to stop-and-go driving and using lower gears more often. The highway MPG is better, helped by the smooth-shifting 9-speed automatic transmission, which allows the engine to cruise at lower RPMs. This makes long road trips more economical and comfortable, and the GLC300 4matic can travel further on a gallon of premium gasoline.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 Mercedes-Benz GLC300 4matic at $2,250. This is based on driving 15,000 miles per year and using national average fuel prices. This is just an estimate, and your actual fuel costs may change depending on your driving, city versus highway miles, and local fuel prices. The GLC300 4matic needs premium fuel, which costs more.

Real-world expectations

Owners often report fuel economy slightly lower than the EPA estimates, especially for mostly city driving. Driving faster, short trips, and heavy air conditioning use can all lower MPG. However, drivers who accelerate smoothly, predict traffic, and spend most of their time on the highway may see figures closer to, or even a little better than, the EPA estimates. Knowing your driving style will help you predict the long-term fuel costs of the GLC300 4matic.

How it compares

The GLC300 4matic’s fuel economy is average for its class. The BMW X3 xDrive30i, for example, gets about 25 MPG combined. The Acura RDX SH-AWD gets a little less at 23 MPG combined. However, the Lexus NX 350h hybrid gets much better fuel economy at 39 MPG combined, but it has a different driving feel that focuses on efficiency rather than outright performance. Buyers who want to consider GLC300 MPG across all years should look at the numbers along with the luxury and performance these vehicles offer. For some, a few MPG is less important than the driving feel and prestige of the Mercedes-Benz brand. It’s always good to be informed by reviewing all Mercedes Benz fuel economy data.

Tips to maximize efficiency

Use the GLC300’s “Eco” driving mode. This mode changes the throttle response and transmission shift points to save fuel. It may make acceleration a little slower, but it can help, especially in city driving where the vehicle is always accelerating and decelerating.

Make sure your tires are inflated to the pressure on the driver’s side doorjamb. Underinflated tires increase rolling resistance, making the engine work harder and use more fuel. Check tire pressure often, especially when the temperature changes.

Avoid fast acceleration and hard braking. Smooth inputs not only save fuel but also reduce wear on the vehicle’s parts. Look ahead and try to keep a steady speed when possible.

Don’t idle for long. If you’re stopped for more than a minute, turn off the engine. Modern engines restart easily, and idling wastes fuel, especially in the city where you stop often.

Reduce the vehicle’s weight. Extra weight uses more fuel. Remove unnecessary items from the trunk and interior. Also, remove roof racks or cargo carriers when you don’t need them, since they create drag and reduce fuel efficiency.