MPG with & without air dam (removed) on 2025 4Runner TRD Off-Road (non-hybrid) 6th Gen -- Real world test

[E.T.]

Summary -

22.67 MPG vs 23.47 MPG: The minuscule difference (only about 0.8 MPG gain) between test runs with and without the air dam suggests negligible real-world fuel economy impact, debunking the myth about the air dam's importance.

 

[kekecarioca]

Great test there TFL. For a silly plastic thing, 0.8 mpg gain is quite big considering what manufactures have to spend on R&D to meet EPA across their lineup of vehicles.