Tested: 2025 GMC Yukon Diesel Delivers on Performance and Economy

General Motors has given the 2025 GMC Yukon a subtle facelift, differentiating it from its Chevrolet Tahoe sibling with a distinct grille, updated lighting systems, and additional chrome accents. The interior has not been left untouched, with a focus on enhancing luxury through better materials and a 16.8-inch vertical infotainment display—a feature that distinguishes it from the Tahoe's horizontal screen. The Yukon aims to provide a luxurious, home-like experience on the road. This is evident in features like massaging seats, hidden cupholders, and a high-quality Bose sound system. However, comfort doesn't extend seamlessly to all parts of the SUV; the rear seats remain a point of critique for their lack of legroom and the presence of hard plastic surfaces.

The Yukon's model lineup includes various trims, with the AT4 Ultimate and Denali Ultimate offering top-tier features. The AT4 Ultimate, in particular, is designed with off-road enthusiasts in mind, featuring enhancements like a reconfigured bumper for better angles, underbody skid plates, and specific tire selections for rugged terrain. While these features are appealing, the true star of the lineup is the diesel engine option, which provides significant improvements in fuel efficiency and range. This engine makes the Yukon particularly attractive for long-distance travelers.

Testing the diesel-powered Yukon revealed its strengths in torque and fuel economy. It delivers 305 horsepower and 495 pound-feet of torque, making it a robust performer compared to the traditional V-8 options. Acceleration is smooth and steady, but it falls slightly behind its gasoline counterparts in speed tests. However, where it truly excels is in fuel efficiency. The diesel engine achieves an EPA rating of 22 mpg combined, with highway tests showing up to 27 mpg. This efficiency translates to a potential driving range of over 640 miles on a full tank, significantly outpacing the gasoline models.

Despite its numerous advantages, the Yukon diesel isn't without its drawbacks. The engine's sound, particularly at low speeds, lacks the smoothness some might expect from a premium SUV. Additionally, while the Yukon is adept at maintaining stability and comfort on highways, it struggles with low-speed ride quality, especially on uneven surfaces. The combination of adaptive dampers and air-spring suspension, while effective at high speeds, fails to soften the ride in urban settings or on rough roads.

The Yukon's pricing places it in the upper echelons of the SUV market. The AT4 Ultimate model, in particular, starts at a hefty $99,095, and with additional options, can exceed $100,000. This price point includes a diesel engine discount, yet the cost remains high for many consumers. However, the Yukon still attracts a dedicated customer base, drawn to its unique combination of diesel efficiency, luxury features, and off-road capabilities. Its sales performance reflects this, with record numbers reported in recent years.

In summary, the 2025 GMC Yukon diesel offers a compelling package for those seeking a luxurious yet practical SUV. Its diesel engine provides remarkable fuel efficiency and range, making it an ideal choice for long-distance drives. However, potential buyers should weigh these benefits against its high price and certain performance limitations in urban environments. Despite these considerations, the Yukon holds a unique position in the SUV market, appealing to consumers who value both performance and luxury.