It used to be that large SUVs were all about capability. They were the vehicles buyers chose because they needed V8 power, beefy towing abilities and room for up to nine people. Times have changed. Upcoming large SUVs are focusing on getting better fuel economy.

The 2015 Ford Expedition (Ford Motor Company)

Ahead of the Dallas-Fort Worth auto show, Ford announced that the refreshed 2015 Ford Expedition will eschew the old model’s V8 engine in favor of one of the company’s EcoBoost V6 engines. According to Ford, “The new EcoBoost engine dramatically changes the driving characteristics of Expedition. Compared with the 5.4-liter V8, the 3.5-liter EcoBoost gives drivers not just better fuel economy, but more power and torque on demand at very low engine speeds.”

The powertrain changes on the redesigned 2015 Chevrolet Tahoe, a direct competitor to the Expedition, aren’t as dramatic. Still, Chevrolet says that the Tahoe’s V8 engine has been modified to squeeze out as many MPGs as possible. “A more-efficient, direct-injected EcoTec3 powertrain coupled with improved aerodynamics help offer greater estimated highway fuel economy based on GM testing while preserving overall performance and capability. Official EPA estimates are not yet available.

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