We report on a comparative study of the low-temperature magnetoresistance ρ_xx ( B ) and Hall resistance ρ_xy ( B ) of CeCu_{6 - x} Au_x for 0 {less-than or slanted equal to} x {less-than or slanted equal to} 0.2 with magnetic field B along the easy direction. The data are discussed in terms of the metamagnetic transition manifest in ρ_xx ( B ), and of the anomalous Hall effect and bandstructure effects of the heavy-quasiparticle bands affecting ρ_xy ( B ).