Car and Driver gathered five slippery cars to study their drag and lift properties at a wind tunnel to determine which brand did the best job optimizing its car’s aero performance.

The overall winner was the Tesla Model S by virtue of its larger 25.2-square-foot face and lower 0.24 drag coefficient, which yield the same 6.2-square-foot drag area as the Prius. Low drag is a tougher challenge with a larger frontal area, hence the Tesla’s overall win.