E85 sure does lower mpg significantly compared to E0 or E10, in any properly functioning E85-capable vehicle, unless someone can identify a counter-example...
E85 has way less energy per unit volume compared to E0 or E10 gasoline...
And gasoline has way less energy per unit volume than diesel...
E85 has way less energy per unit volume compared to E0 or E10 gasoline...
And gasoline has way less energy per unit volume than diesel...