We need to find a positive spin for this.
From Automobile: Bronco brand customers demand the highest-levels of off-road capability and performance. With off-road competition-proven EcoBoost engines and class-exclusive transmission offerings, our all-new Bronco two-door and four-door models deliver the best four-cylinder horsepower and torque, and the best available six-cylinder gasoline horsepower and torque in its class."
The 2021 Bronco with the best gas mileage comes equipped with the entry-level 2.3-liter engine with either 10-speed automatic or manual in Base, Big Bend, or Outer Banks trim. It manages 20 mpg city, 22 mpg highway, and 21 mpg combined. The most efficient Bronco with the available 2.7-liter V-6 sees mileage fall to 18 city, 20 highway, and 19 combined. The least efficient Bronco variant overall is any 2.7-liter equipped model with the Sasquatch package, which nets an even 17 mpg across the board.
2021 Ford Bronco Fuel Economy (City/Hwy/Combined)
Bronco 2.3L I-4: 16-20/17-22/17-21 mpg
Bronco 2.7L V-6: 17-18/17-20/17-19 mpg
The comparison to the Jeep Wrangler, with a plethora of engine options to choose from, isn't particularly kind to the Bronco. Using four-door, non-hybrid Wranglers as a comparison, to be as generous as possible to the Bronco, the Wrangler is ahead in every category until you get to the 392 V-8—no surprise there. Until now, no one has ever held the Wrangler in much esteem when it comes to fuel economy, what with its porky curb weight and atrocious aerodynamics.