The retarded Liénard equation (1) \(x'' + f(x)x' + g(x(t - h)) = 0\) with continuous \(f\), \(g : \mathbb{R} \to \mathbb{R}\), \(h = \text{const} \geq 0\) is considered. Necessary and sufficient conditions of boundedness and oscillation of solutions to (1) are demonstrated. This result is compared with earlier ones obtained by Burton, Graef, Sansone, Conti, Villari for (1) with \(h = 0\).