  In this work we study the convergence to equilibrium for a (potentially)
degenerate nonlinear and nonlocal McKean-Vlasov equation. We show that the
solution to this equation is related to the solution of a linear degenerate
and/or defective Fokker-Planck equation and employ recent sharp convergence
results to obtain an easily computable (and many times sharp) rates of
convergence to equilibrium for the equation in question.
