The Expedition’s 3.5‑liter twin‑turbocharged V6 engines—available in either standard 400 horsepower or high‑output 440 horsepower configurations—deliver robust, responsive power that often matches or surpasses competitors' larger displacement V8s. Torque peaks at 510 lb‑ft in the high‑output variant, boosting towing and acceleration. Coupled with a smooth 10‑speed automatic transmission, it empowers the Expedition to reach 60 mph in under 5 seconds in its Max configuration—a remarkable feat against the Suburban’s roughly 6.3‑second sprint with the 6.2L V8 engine.

Meanwhile, the Suburban offers three engines: a 5.3L V8 producing 355 hp, an optional 6.2L V8 producing 420 hp, and a 3.0L turbo‑diesel inline‑six focused on torque and fuel efficiency. While the diesel excels in torque (495 lb‑ft), its slower acceleration limits spirited driving. The gasoline V8 variants, although powerful, deliver inferior power‑to‑weight ratios compared to the Expedition’s advanced twin‑turbo V6s.

Ford engineers implemented a redesigned suspension system for the Expedition, emphasizing smoothness and comfort across diverse terrains common around Kent and Maple Valley, although steering feedback feels somewhat muted. The Expedition's Tremor trim enhances off‑road prowess with spray‑on skid plates and specialized suspension tuning, positioning it confidently on rugged trails—capabilities that give it an extra edge when pavement ends.

The Suburban benefits from an adaptive air suspension on higher trims, improving highway comfort but suffering on large 24‑inch wheels that degrade ride quality noticeably over uneven pavement. Overall, the Expedition offers a more composed balance between dynamic handling and ride comfort for mixed driving needs, while the Suburban feels tuned more for straight‑line cruising.