This more luxurious version of the Ford Expedition is neither as quiet nor as plush as its GM competitors, but it offers a much more comfortable third-row seat and is more reliable than GM's offerings. The 3.5-liter turbo V6 delivers smoother, more effortless power delivery than the old V8 that it replaced, and it returned 15 mpg in our testing. Handling is ungainly but secure. The Navigator rides comfortably, but wind noise is excessive. The interior looks dated, and there is no hiding the Navigator's pickup-truck roots. Both regular- and long-wheelbase versions are available. The motorized running boards help access to the tall cabin. Sync 3 has replaced the much-maligned MyLincoln Touch infotainment system.