21 MPG combined for the 2024 Mercedes-Benz AMG GLC43 4matic 2.0L 4-cyl isn’t going to win any green awards, and that’s fine. This isn’t a Prius; it’s an AMG-tuned machine designed to deliver thrilling performance and a premium driving experience. The GLC43 appeals to buyers who prioritize responsive acceleration, sharp handling, and a luxurious interior over maximizing fuel efficiency. They understand there’s a trade-off, and they’re willing to pay for it.

City and highway performance

The EPA estimates 19 MPG in the city and 25 MPG on the highway for the GLC43. The city figure reflects the demands of stop-and-go traffic where the turbocharger is constantly working. The highway MPG, while better, still isn’t stellar, largely due to the vehicle’s weight, standard all-wheel drive, and the tuned engine’s thirst for fuel when at higher speeds. The 9-speed automatic transmission does its best to keep the engine in its most efficient range when possible, trying to balance performance with economy.

Annual fuel cost

Based on the EPA’s estimates, the annual fuel cost for the 2024 Mercedes-Benz AMG GLC43 is $2,750. This figure is calculated using an estimated 15,000 miles driven per year and using the national average fuel prices. This number can vary depending on individual driving habits, the type of fuel used, and fluctuations in fuel prices. Drivers who spend more time in congested city conditions or those who accelerate more can expect to exceed this estimate.

Real-world expectations

While the EPA figures provide a useful benchmark, real-world MPG will vary. Aggressive driving, frequent short trips, and carrying extra weight will all negatively impact fuel economy. It is reasonable to expect numbers near the EPA estimates with careful driving, but enthusiastic drivers might find themselves closer to 17-18 MPG combined. Those who frequently use the GLC43’s performance capabilities should be prepared to visit the gas station more often.

How it compares

Compared to its rivals, the 2024 AMG GLC43 lands somewhere in the middle of the pack on fuel economy. The Porsche Macan S with its 2.9L V6 achieves around 19 MPG combined, making it less efficient. The BMW X3 M40i, with its smooth inline-6 engine, manages close to 23 MPG combined, which is more economical. Audi’s SQ5 with its punchy V6 sits in a similar spot with a combined 21 MPG rating. Buyers considering all Mercedes Benz fuel economy data should note that even within the GLC lineup, the AMG model sacrifices efficiency for performance. These comparisons highlight the choices luxury SUV buyers face: balancing power and fuel efficiency to suit their individual needs.

Tips to maximize efficiency

Avoid aggressive acceleration, especially from a standstill. The GLC43’s turbocharger delivers instant torque, but each burst of acceleration consumes a considerable amount of fuel. Gentle and progressive throttle inputs will help keep fuel consumption in check.

Use the vehicle’s driving modes. Select “Comfort” mode for everyday driving to optimize fuel efficiency by prioritizing smoother acceleration and earlier gear changes. Even with the GLC43’s programming, choosing the right driving mode can help.

Ensure correct tire pressure is maintained. Underinflated tires increase rolling resistance, forcing the engine to work harder and reducing fuel economy. Check your tire pressure regularly and inflate them to the recommended levels.

Minimize the use of accessories like air conditioning and heated seats when possible. These features place additional load on the engine, increasing fuel consumption. Use them selectively and consider alternatives like opening windows on cooler days.

Keep up with routine maintenance, including oil changes and air filter replacements. A well-maintained engine operates more efficiently, maximizing fuel economy. Neglecting these tasks can lead to decreased performance and increased fuel consumption. Enthusiasts exploring AMG MPG across all years know that even the highest-performance engines need consistent maintenance.