Owners of the 2020 Mercedes-Benz GLE450 4matic get around 21 MPG combined. While that might seem high for a compact crossover, it’s a compromise many buyers accept for a mid-size luxury SUV with a strong 3.0L inline-six and advanced 4matic all-wheel drive. This vehicle is purchased for its luxury, performance, and commanding presence, not necessarily for saving gas.

City and highway performance

The EPA estimates the GLE450 gets 19 MPG in the city and 24 MPG on the highway. The city figure reflects typical stop-and-go driving, where the engine’s weight and frequent acceleration reduce fuel economy. The highway number is better, showcasing the efficiency of the 9-speed automatic transmission and the engine’s ability to cruise at higher speeds. However, aggressive driving, even on the highway, will quickly reduce those gains.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2020 Mercedes-Benz GLE450 4matic is $2,750. This is based on driving 15,000 miles per year and using national average fuel prices. This is a significant cost for owners and potential buyers who plan to drive that much.

Real-world expectations

While the EPA provides a standard, real-world fuel economy often varies. Driving style, traffic, and even tire pressure can change the numbers. Expect figures that fluctuate around the EPA estimates, potentially dipping lower with frequent short trips or quick acceleration. Owners who prioritize smooth, steady driving and maximize highway miles are more likely to achieve the advertised MPG, and can see how this compares to GLE450 MPG across all years.

How it compares

The GLE450’s fuel economy is competitive, but some rivals offer slightly better numbers. The BMW X5 xDrive40i, with a comparable inline-six engine and all-wheel drive, gets around 23 MPG combined. The Acura MDX, with a less powerful V6 engine, achieves approximately 22 MPG combined. The Volvo XC90 T6 AWD, also lands around 22 MPG combined. For buyers focused on less gas, these alternatives might be tempting. However, the GLE450 offers a unique level of refinement and performance that justifies its fuel consumption for many. Review all Mercedes Benz fuel economy data and compare today.

Tips to maximize efficiency

Use the GLE450’s driving modes. The “Comfort” mode prioritizes fuel efficiency by optimizing engine and transmission settings for smooth, relaxed driving. Avoid quick acceleration and hard braking, which use more fuel than gradual driving. Plan routes to avoid stop-and-go traffic where possible.

Make sure tires are inflated to the recommended pressure. Underinflated tires increase rolling resistance, which reduces fuel efficiency. Check tire pressure regularly, especially when the temperature changes. Use cruise control on the highway to keep a consistent speed and minimize unnecessary acceleration, which can improve fuel economy on longer trips.

Minimize the use of accessories like air conditioning and heated seats; they can strain the engine and reduce fuel efficiency. Use these features sparingly, especially during short trips. Reduce unnecessary weight in the vehicle, since extra cargo and passengers can decrease fuel efficiency, especially in city driving.

Think about the fuel type to best maximize gas mileage. Some fuels will allow efficient combustion within the engine. Review the manufacturer’s recommendations.