The 2017 Mercedes-Benz GLC300 gets 24 MPG combined, a reasonable figure for a compact luxury SUV. This vehicle caters to those prioritizing comfort, badge prestige, and a certain level of performance over maximum fuel efficiency. It’s a trade-off many GLC300 buyers accept when investing in a premium experience.

City and highway performance

The EPA estimates for the GLC300 are 22 MPG in the city and 28 MPG on the highway. The city MPG reflects urban driving’s stop-and-go nature, due to the engine consuming more fuel during acceleration and idling. This is typical for a turbocharged engine paired with a conventional automatic transmission. On the open road, the 9-speed transmission is effective, letting the engine settle into a lower RPM range and contributing to the 28 MPG highway rating. This makes longer journeys more economical for weekend getaways or cross-state travel.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Mercedes-Benz GLC300 at $2,400. This is calculated based on driving 15,000 miles per year, the EPA’s combined MPG rating of 24, and national average fuel prices. It’s a useful benchmark. Personal driving habits and regional fuel costs can significantly influence the real-world cost. A driver who primarily drives in the city, or who accelerates more, will likely exceed the $2,400 annual expense. Someone who mainly cruises on the highway and prioritizes fuel-efficient driving could spend less.

Real-world expectations

While EPA estimates offer a comparison, real-world MPG often differs. Driving style, traffic, and air conditioning can affect fuel consumption. Some GLC300 owners report figures close to the EPA estimates, some slightly above, and some a bit short. Monitoring fuel consumption through the car’s trip computer or apps gives a more accurate picture of individual fuel economy. You can also review GLC300 MPG across all years to see trends in owner-reported fuel economy.

How it compares

The 2017 GLC300’s fuel economy is in the middle of its class. The BMW X3 xDrive28i, with its 2.0L turbo engine, achieves about 24 MPG combined. The Audi Q5 2.0T Quattro gets around 25 MPG combined. The Lexus NX 200t, also rated at 25 MPG combined, often appeals to buyers prioritizing reliability and a quiet driving experience. The Acura RDX typically offers slightly less fuel efficiency than the GLC300, usually around 23 MPG combined. Buyers in this segment often compare these models where fuel economy is one of many factors considered.

Tips to maximize efficiency

Use the GLC300’s Eco drive mode. This setting optimizes the powertrain for fuel efficiency by adjusting throttle response and shift points. Eco mode encourages a smoother, more economical driving style, especially in city traffic.

Check tire pressure. Properly inflated tires reduce rolling resistance, which improves fuel economy. Check your tire pressure regularly, especially during temperature changes, and inflate them to the manufacturer’s recommended levels.

Avoid aggressive acceleration and braking. The GLC300’s turbocharged engine provides ample power, but rapid acceleration burns more fuel than gradual increases in speed. Anticipate traffic flow and brake smoothly. Harsh braking wastes energy that could have maintained momentum.

Minimize idling. Letting the engine idle for extended periods consumes fuel without covering distance. If you anticipate being stopped for more than a minute or two, turn off the engine. The GLC300’s start-stop system does this automatically in some cases, but you can also do it manually.

Keep up with scheduled maintenance. Regular maintenance, including oil changes, air filter replacements, and spark plug checks, ensures the GLC300’s engine runs efficiently. Neglecting these tasks can reduce performance and increase fuel consumption. For more details you can review all Mercedes Benz fuel economy data.