Lincolns Navigator feels less nimble than its Ford Expedition sibling. This large SUV rides reasonably comfortably, but getting in and out requires agility, and parking is a challenge. The 5.4-liter, 300-hp V8 provides strong acceleration and effortless towing. Fuel economy is dismal, however, and braking was marginal in our tests. Adjustable pedals allow short drivers to sit farther away from the steering wheel and air bag. While the middle seats provide plenty of room, the front seats are too soft and lack support. New for 2001 are anchors for LATCH/ISOFIX child seats and free maintenance for the first three years or 36,000 miles.