The 2020 Lincoln Aviator has just two engine options, a base turbocharged 3.0-liter V6 with 400 horsepower and 400 pound-feet of torque, and the same engine coupled to a hybrid system with 450 horsepower and 600 pound-feet of torque. That base engine is the one we have fuel economy numbers for, and it's shared with the Ford Explorer ST, though the ST's version makes an extra 15 pound-feet of torque. With all-wheel drive it gets nearly the same fuel economy as the fast Ford with 17 mpg in the city, 24 on the highway and 20 in combined driving. The Explorer ST gets one more mpg in town.
Unlike the Explorer ST, the Aviator does offer rear-wheel drive with this turbocharged V6. This model gets improved fuel economy of 18 in the city, 26 on the highway and 21 in combined driving. This isn't too surprising, since all-wheel-drive vehicles often do a little worse when it comes to fuel economy.
We'll be especially curious as to how the Aviator hybrid performs. We doubt it will match the Ford Explorer hybrid, since that crossover relies on a less-powerful naturally aspirated 3.3-liter V6. But it might give the all-wheel-drive four-cylinder Explorer a run for its money, since the rear-drive V6 Aviator is only 1 to 2 mpg behind it.