New 2025 GMC Yukon Denali Ultimate V8 420HP 6.2L - Exterior and Interior Details
The Yukon offers a choice of two gas-fed V-8s and a diesel engine. There's a 355-hp 5.3-liter V-8 that's standard on the Elevation and AT4. The Denali and Denali Ultimate have a standard 420-hp 6.2-liter V-8, which is also available on the AT4. Meanwhile, every model is compatible with the diesel 3.0-liter inline-six that now makes 305 horses and 495 pound-feet of torque, up from 277 horses and 460 pound-feet. All Yukon models have a 10-speed automatic transmission and either rear- or all-wheel drive. For 2025, the gearshifter moves from buttons on the dashboard to a more user-friendly lever on the steering column. The off-road-oriented AT4 model features a two-speed transfer case, 20-inch wheels with all-terrain tires, underbody skid plates, and an optional air suspension capable of providing up to two more inches of ground clearance. While all three powertrains are capable, we find the diesel’s low-down torque and significantly better fuel efficiency particularly well-suited to the Yukon’s mission and heft.
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