19 MPG combined isn’t going to win the 2018 Mercedes-Benz GLE350 4matic 3.5L 6-cyl any fuel-sipping awards. But let’s be honest: if ultimate efficiency was your primary concern, you wouldn’t be shopping for a mid-size luxury SUV with a naturally aspirated V6 and standard all-wheel drive. This vehicle is purchased for its comfort, its presence, its safety, and its ability to handle inclement weather with ease. Fuel economy, while a consideration, likely ranks further down the list for its target demographic.

City and highway performance

The EPA estimates for the 2018 GLE350 4matic are fairly consistent across different driving environments. The city rating comes in at 18 MPG, showing the realities of stop-and-go traffic and frequent acceleration. On the highway, that number only climbs to 22 MPG. This relatively small spread suggests that the vehicle’s engine and transmission are optimized for steady-state cruising, but still somewhat burdened by the vehicle’s considerable weight and permanent all-wheel-drive system at higher speeds. These figures reflect typical use; aggressive driving will undoubtedly lower those numbers, while a gentle foot could potentially yield slightly better results. Comparing these figures to the GLE350 MPG across all years can show if the 2018 model year fits within your expectations.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2018 Mercedes-Benz GLE350 4matic will be $3,050. This figure is based on driving 15,000 miles per year, using national average fuel prices. It is important to understand that this is simply an estimate. Your actual fuel costs could be higher or lower depending on several factors, including your driving habits, the type of roads you typically drive on, and, of course, local fuel prices. If you live in an area with significantly higher gas prices than the national average, expect to spend more than the $3,050 estimate. Conversely, if you drive fewer than 15,000 miles per year, your fuel costs will likely be lower.

Real-world expectations

While the EPA provides a standardized benchmark, it’s crucial to temper expectations with real-world experiences. Owners of the 2018 GLE350 4matic often report figures that vary slightly from the official EPA estimates. Some drivers report averaging closer to 17 MPG in mixed driving conditions, while others who prioritize highway driving might see numbers closer to the 22 MPG estimate. Factors such as tire inflation, vehicle maintenance, and the use of accessories like roof racks can also impact fuel efficiency. The GLE350, because it is a luxury vehicle, also encourages spirited driving from time to time, which will impact fuel consumption.

How it compares

Compared to its competitors, the 2018 Mercedes-Benz GLE350 4matic’s fuel economy lands in the middle of the pack. The BMW X5 sDrive35i (rear-wheel drive) achieves a slightly better 21 MPG combined, given its lighter weight and the absence of all-wheel drive. The Lexus RX 350, with its reputation for reliability and fuel efficiency, manages 23 MPG combined. The Acura MDX, another popular choice in this segment, also achieves 22 MPG combined. For those cross-shopping, consider that the Volvo XC90 T6 AWD achieves around 22 MPG combined. These differences, of a few MPG, can add up over the life of the vehicle, but they must be weighed against the specific driving experience and features offered by each model. If you’re interested in seeing all Mercedes Benz fuel economy data, you can explore the Mercedes-Benz brand more deeply.

Tips to maximize efficiency

Though the GLE350 4matic isn’t designed as a hypermiler’s dream, there are steps you can take to improve its fuel efficiency. Avoid aggressive acceleration and hard braking whenever possible. The V6 engine responds well to a gentle foot, and maintaining a consistent speed will minimize fuel consumption.

Regular maintenance is essential. Ensure your tires are properly inflated to the recommended pressure, as underinflated tires increase rolling resistance and reduce fuel economy. And, keep up with scheduled oil changes and other maintenance items to keep the engine running smoothly and efficiently.

Minimize unnecessary weight. Avoid carrying heavy loads in the cargo area or on the roof rack, as extra weight puts a strain on the engine and reduces fuel efficiency. Remove any items you don’t need and store them elsewhere.

Consider using cruise control on long highway drives. Cruise control helps maintain a consistent speed, which can improve fuel economy. However, be mindful of using cruise control in hilly terrain, as the vehicle may downshift frequently, negating some of the fuel-saving benefits.

Finally, be aware of your driving environment. Anticipate traffic flow and avoid unnecessary idling. Idling consumes fuel without covering any distance, so minimizing idling time can make a noticeable difference in your overall fuel economy.