It has very little torque loss at the wheels.
Late Model Preservation was able to loan a 2021 BroncoBig Bend equipped with the 2.3-liter turbocharged 4-cylinder, 10-speed auto transmission, and the Sasquatch pack. The SUV was put on the dyno to determine how much power it had.
In the video, the host misquotes the power at 275 horsepower (205 Kilowatts) as well as 310 pound-feet of torque (420 Newton-meters). This is true when the engine runs on regular gasoline. This engine can produce 300 horsepower (224 kW) or 325 lbft (441Nm) when running on high-octane gasoline, which is what the engine is using in this video.
Because of the 1:1 ratio, the Bronco can run in seventh gear at the dyno. The graph shows that the engine produces 225.37 horsepower (168 kW) at 4,750 RPM and 303.92 Lb-ft (412Nm) at 3,410 RPM to the rear wheels. The host pointed out that the SUV had run into the speed limiter during pull. Therefore, the actual output may have been slightly higher.
This amounts to roughly a 25% drop in horsepower at the wheels and a 6.5% loss in torque. Although this disparity in horsepower seems huge, remember that the SUV reached the speed limiter and was unable to run full throttle.
The Late Model Renovationcrew also owns a 1996 Ford Bronco equipped with the legendary 351 (5.752-liter Windsor V8) engine. The engine produced 165 horsepower (123 kW), and 259 lbft (351Nm) at the dyno. The modern powerplant produces 60 hp (45kW) and 45 Lb-ft (6 Nm), despite having less displacement.
Late Model Repairhasn’t had the chance to test the Bronco’s twin-turbo V6. It has a factory rating of 330 HP (246 kW) & 415 lb/ft (563Nm). The mill should send 247.5 hp (184.6kW) and 388.03 Lb-ft (526Nm) to the wheels, assuming identical losses as the four cylinder.