17 MPG combined, city, and highway isn’t a number that typically gets fuel economy enthusiasts excited, but for the 2025 GMC Canyon AT4X 4WD 2.7L 4-cyl, it’s a statistic that fits its off-road, rugged persona. This isn’t a vehicle chasing efficiency; it’s a specialized tool built for conquering challenging terrain, where capability matters most, and the 2.7L turbocharged engine, paired with an 8-speed automatic and advanced 4WD system, is built for torque and grunt, not sipping fuel. The buyer of an AT4X isn’t comparing it to a Prius; they’re looking for a legitimate trail machine that can still handle daily duties, and they understand the trade-offs in such a specialized package.

City and highway performance

The 17/17/17 MPG rating for the 2025 GMC Canyon AT4X 4WD 2.7L 4-cyl shows its design priorities. Normally, a vehicle sees a noticeable bump in highway efficiency due to more consistent speeds and less stop-and-go driving. For the AT4X, the identical city and highway figures suggest several factors are at play. Its aggressive all-terrain tires, lifted suspension, and less aerodynamic profile, designed for off-road prowess, create significant drag even at highway speeds. The 2.7L turbocharged engine is tuned for peak torque delivery across a broad RPM range, ensuring power is always on tap, which can be less efficient at sustained highway cruising than an engine optimized for high-speed efficiency. In urban environments, the strong low-end torque helps move the substantial mass of the AT4X effortlessly, but frequent acceleration and braking cycles inherent to city driving still consume fuel rapidly. The AT4X is built to perform in conditions where fuel economy is a secondary concern, and its drivetrain and chassis reflect that mission.

Annual fuel cost

The EPA estimates an annual fuel cost of $2,600 for the 2025 GMC Canyon AT4X 4WD 2.7L 4-cyl. This figure is calculated based on an average of 15,000 miles driven per year and national average fuel prices, presenting a standard baseline for comparison. For the typical AT4X buyer, this number is part of the overall cost of ownership for a highly capable off-road truck. While certainly not the cheapest vehicle to fuel on an annual basis, it aligns with expectations for a mid-size truck with significant off-road modifications and a reliable powertrain. Owners committed to the AT4X’s specific mission understand that the investment in its capabilities extends beyond the purchase price, encompassing routine maintenance and fuel. This cost is a direct reflection of the power, traction, and durability the AT4X delivers, making it an accepted part of the ownership experience for those who prioritize adventure and utility.

Real-world expectations

In real-world driving, the 2025 GMC Canyon AT4X 4WD 2.7L 4-cyl is likely to deliver numbers very close to its EPA ratings, possibly even dipping below 17 MPG under certain conditions. The primary factor influencing its fuel economy is how it’s driven and, importantly, where it’s driven. Frequent use of 4WD, especially in lower gears or demanding off-road situations, will see efficiency drop considerably. Aggressive driving, heavy acceleration, and carrying maximum payloads or towing will also push the MPG downwards. Conversely, a disciplined driver on flat terrain might see a slight improvement, but the reality is that the AT4X is designed to be pushed, and its owners typically do just that. Expecting anything significantly higher than 17 MPG consistently means misunderstanding the vehicle’s fundamental character. For more information on this model, explore additional CANYON MPG across all years.

How it compares

The 2025 GMC Canyon AT4X 4WD 2.7L 4-cyl occupies a unique niche, making direct fuel economy comparisons somewhat nuanced. Its closest competitor, the Chevrolet Colorado ZR2 4WD, uses the same 2.7L engine and 8-speed automatic, and also rates at 17 MPG combined. This parity makes sense, as they share fundamental architecture and powertrain. Moving to other off-road oriented mid-size trucks, the Toyota Tacoma TRD Pro, with its 2.4L turbo engine, typically achieves around 18 MPG combined, offering a marginal improvement, but often with less outright power than the GMC’s 2.7L turbo. The Ford Ranger Raptor, a performance-focused off-roader, with its more powerful 3.0L twin-turbo V6, usually sits around 16 MPG combined, highlighting that stepping up in performance often means a slight dip in efficiency. Even the Jeep Gladiator Rubicon, with its 3.6L V6, generally hovers around 17 MPG combined, showcasing that seriously capable off-roaders aren’t built for stellar fuel economy. The AT4X’s 17 MPG is right in line with, if not slightly better than, its most direct and capable rivals, demonstrating that its segment prioritizes factors other than absolute fuel efficiency. For a broader perspective on GMC vehicles, check out all Gmc fuel economy data.

Tips to maximize efficiency

While the 2025 GMC Canyon AT4X 4WD 2.7L 4-cyl isn’t a fuel sipper, owners can still use strategies to optimize their mileage. Regularly check and maintain tire pressure to the recommended specifications. This is particularly important with aggressive all-terrain tires, as under-inflation not only hurts fuel economy but also impacts handling and tire longevity.

Practicing smooth acceleration and deceleration is critical. The 2.7L turbocharged engine delivers substantial torque but rapidly demands more fuel when drivers stomp on the accelerator from a standstill. Gradually building speed and anticipating traffic flow can make a noticeable difference.

Minimize unnecessary weight. Before heading out, remove any heavy gear, tools, or recovery equipment that isn’t essential for the specific trip. Every extra pound the engine has to move requires more fuel, particularly when combined with the AT4X’s inherent mass and aerodynamic profile.

When not off-roading, consider if you truly need the most aggressive all-terrain tires. While essential for trail performance, they contribute significantly to rolling resistance and reduced aerodynamics on pavement. Some owners might opt for a less aggressive, more road-friendly tire for daily driving, if practical.