30 MPG combined won’t set any records, but for the 2025 Buick Encore GX FWD with the 1.3L 3-cylinder, it’s an acceptable figure. This isn’t a hybrid or a dedicated fuel sipper; it’s a stylish, comfortable, and relatively affordable small SUV aimed at urban dwellers and empty nesters who prioritize maneuverability and ease of parking over outright performance or maximum cargo space. Buyers in this segment often accept a modest MPG rating as a trade-off, especially considering the elevated driving position and available luxury features that the Encore GX offers.

City and highway performance

The EPA estimates for the 2025 Buick Encore GX FWD 1.3L break down to 29 MPG in the city and 31 MPG on the highway. This near-identical split underscores the engine’s flexibility and a well-tuned variable transmission. The turbocharged three-cylinder delivers adequate power for most driving situations, and the automatic transmission smoothly adjusts gear ratios to optimize efficiency whether navigating stop-and-go traffic or cruising at highway speeds. While a more powerful engine is available, this base powertrain strikes a balance between affordability and fuel consumption that resonates with many buyers seeking a capable, yet economical, daily driver.

Annual fuel cost

According to the EPA, the annual fuel cost for the 2025 Buick Encore GX FWD 1.3L is $1,450. This figure is based on driving 15,000 miles per year and using national average fuel prices. Keep in mind that your actual fuel costs may vary depending on your driving habits, local fuel prices, and the type of fuel you use. Still, this EPA estimate provides a valuable benchmark for comparing the Encore GX’s operating costs against those of its competitors. This estimate also illustrates that all Buick fuel economy data falls into an acceptable ownership cost range for many buyers.

Real-world expectations

While the EPA estimates offer a standardized basis for comparison, real-world MPG can vary. Consider factors such as driving style, traffic conditions, and even the weather. Aggressive acceleration, frequent hard braking, and prolonged idling will all negatively impact fuel economy. Conversely, adopting a smoother driving style and anticipating traffic flow can help you achieve figures closer to the EPA’s projections. Regularly checking tire pressure and ensuring proper vehicle maintenance will also help maximize fuel efficiency in your ENCORE MPG across all years.

How it compares

The Buick Encore GX competes in a crowded segment. The Kia Seltos, for example, with its naturally aspirated 2.0L engine and AWD, achieves a combined rating of 29 MPG, slightly below the Encore GX’s FWD configuration. The Mazda CX-30, known for its sporty handling, averages around 28 MPG with its base engine and standard AWD. Even the Honda HR-V, a benchmark in the subcompact SUV class, gets around 28 MPG combined with its standard FWD setup. For those seeking a truly fuel-efficient alternative, hybrid options like the Toyota Corolla Cross Hybrid offer significantly higher MPG, but at a higher price point. The Encore GX’s 30 MPG puts it right in the mix with other options in its class. That 30 MPG rating is a critical piece for cross-shoppers looking at overall value.

Tips to maximize efficiency

Use the Encore GX’s stop/start system. It automatically shuts off the engine when you come to a complete stop and restarts it when you lift your foot off the brake. This feature greatly reduces fuel consumption in stop-and-go traffic, and while it may take some getting used to, it can make a noticeable difference in your MPG.

Anticipate traffic conditions. By looking ahead and maintaining a steady speed, you minimize the need for hard acceleration and braking, both of which consume extra fuel. Smooth and predictable driving is the key to extracting the best possible fuel economy from the Encore GX’s 1.3L engine.

Keep your tires properly inflated. Underinflated tires increase rolling resistance, forcing the engine to work harder and therefore burning more fuel. Check your tire pressure regularly and inflate them to the recommended level, which can be found on a sticker inside the driver’s side doorjamb.

Avoid carrying unnecessary weight. Excess cargo puts a strain on the engine, reducing fuel efficiency. Remove any items you don’t need from the trunk and passenger compartment to lighten the load and improve your MPG.

Use cruise control on the highway. Maintaining a consistent speed on long stretches of highway saves a significant amount of fuel. Cruise can minimize excessive speed variation.