27 MPG combined for the 2026 Buick Encore GX AWD 1.3L 3-cyl makes it a practical, accessible compact crossover designed for urban and suburban life. Efficiency is valued, but getting every last drop of fuel isn’t the only concern. This isn’t a barebones economy car. It’s a Buick, offering a comfortable, slightly elevated experience with all-wheel drive, a respectable list of features, and enough gusto from its turbo triple to navigate daily tasks without feeling sluggish. Buyers of the Encore GX aren’t looking to break land speed records or conquer baja trails. They’re looking for a stylish, manageable package that sips fuel reasonably, handles inclement weather with confidence, and fits neatly into a busy lifestyle without demanding constant trips to the pump. The 1.3L 3-cylinder engine, paired with a 9-speed automatic, delivers a modern powertrain experience that emphasizes smooth power delivery over raw output, aligning with its mission as a refined daily driver.

City and highway performance

The 2026 Encore GX AWD’s city rating of 26 MPG is a strong showing for an all-wheel-drive crossover. This reflects the efficiency gains of its turbocharged 1.3L three-cylinder engine and the intelligent programming of its 9-speed automatic transmission. In stop-and-go traffic, the powertrain is designed to minimize wasted fuel, with quick shifts and a focus on keeping the engine in its optimal operating range. While not a hybrid, this setup extracts impressive mileage from a relatively small displacement engine, making it genuinely economical for urban commutes and errands. On the highway, the Encore GX achieves 28 MPG. This figure, though only marginally higher than its city rating, indicates a vehicle that maintains efficiency across various driving conditions rather than exhibiting a drastic drop-off. The 9-speed transmission allows for low engine RPMs at cruising speeds, contributing to quiet operation and sustained fuel economy on longer trips. The all-wheel drive system, while adding a slight weight penalty, is engineered to engage only when needed, minimizing its impact on fuel consumption during steady-state cruising.

Annual fuel cost

The EPA estimates an annual fuel cost of $1,600 for the 2026 Buick Encore GX AWD 1.3L 3-cyl. This figure is based on driving 15,000 miles per year, with an assumed mix of 45% highway and 55% city driving, and at national average fuel prices. It serves as a valuable benchmark for budgeting and understanding the ongoing cost of ownership beyond the sticker price. For a vehicle of this size, with all-wheel drive and a comfortable interior, an annual fuel expenditure of $1,600 represents a sensible cost of operation for its target audience. This is not a luxury vehicle that will demand premium fuel or astronomical fill-ups, nor is it a bare-bones utilitarian option. It strikes a pragmatic balance, offering enough refinement and capability without imposing a hefty recurring fuel burden.

Real-world expectations

Most drivers can expect to achieve fuel economy figures very close to the EPA’s 27 MPG combined rating for the Encore GX AWD. Buick engineered this powertrain for predictable and consistent performance. The 1.3L turbo engine, with its modest power output but strong torque delivery, encourages a smooth driving style that naturally lends itself to efficiency. Aggressive acceleration and heavy-footed driving will, as always, see a decrease in MPG, but the vehicle’s comfortable demeanor doesn’t inherently invite such behavior. For owners who frequently use the all-wheel drive system in adverse conditions, a slight dip from the rated numbers is plausible, as the system does introduce additional parasitic losses when engaged. Similarly, prolonged idling or short, stop-and-start journeys in extremely cold weather will nudge the needle down. However, for the typical suburban commuter or small family using the Encore GX for daily errands, school runs, and occasional road trips, the 27 MPG combined figure proves highly attainable.

How it compares

The 2026 Buick Encore GX AWD 1.3L 3-cyl positions itself competitively within the compact crossover segment, particularly concerning value and perceived refinement. Its 27 MPG combined rating stacks up favorably against key competitors, especially when considering the all-wheel-drive configuration. For instance, the Buick Encore’s sister vehicle, the Chevrolet Trailblazer AWD with the 1.3L turbo engine, generally achieves an identical 27 MPG combined (26 City/29 Highway), showcasing the shared platform’s efficiency. A direct rival like the Mazda CX-30 AWD 2.5L typically manages 28 MPG combined (26 City/33 Highway), slightly outperforming the Encore GX on the highway but often perceived as a more “driver’s car” rather than a comfort-focused cruiser. The Subaru Crosstrek AWD with its 2.5L engine comes in at 29 MPG combined (27 City/34 Highway), offering superior highway efficiency, but often with a more rugged, less premium interior feel. Finally, the Hyundai Kona AWD with its 1.6L turbo engine typically rates around 28 MPG combined (26 City/32 Highway), which is right in line with the Buick. The Encore GX buyer often prioritizes a quiet cabin, stylish aesthetics, and solid value over marginal MPG differences, and its unique blend of features and mild luxury touches distinguishes it from these often more utilitarian choices. For ENCORE MPG across all years, the 2026 model line stays consistent with its mission as a fuel-conscious choice.

Tips to maximize efficiency

Maintaining proper tire pressure is one of the easiest and most effective ways to ensure your Encore GX achieves its rated fuel economy. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure monthly, especially before longer trips.

Adopt a smooth driving style by anticipating traffic lights and maintaining a consistent speed. The 9-speed automatic transmission is designed to shift efficiently, but rapid acceleration and hard braking counteract its benefits. Gentle inputs on the accelerator and brake pedal allow the powertrain to operate at its most economical.

Minimize unnecessary weight in the vehicle. While the Encore GX isn’t a heavy vehicle to begin with, frequently carrying heavy items or roof-mounted carriers when not needed can subtly degrade fuel efficiency over time. Every pound adds to the engine’s workload.

Use the vehicle’s “Auto Start/Stop” feature, if equipped, rather than disabling it. This system is specifically designed to conserve fuel by shutting down the engine during brief stops, a common occurrence in urban and suburban driving where the Encore GX excels. The smooth restart is engineered to be unobtrusive.

Plan your routes effectively to avoid congestion and excessive idling. The Encore GX’s 26 MPG city rating is good, but extended periods of idling or stop-and-go driving are still less efficient than maintaining a steady pace, even at lower speeds. Modern navigation apps can help you find the least congested paths.