Precision measurements of the production cross sections of W and Z bosons in proton-proton collisions provide stringent tests of perturbative QCD and yield important information about the parton distribution functions (PDFs) for quarks within the proton. We report measurements of fiducial integrated and differential cross sections for inclusive W+, W- and Z boson production, analysed in the electron and muon decay channels, using data collected at center-of-mass energies of 2.76 and 5.02 TeV. The measurement of the W+ and W- cross sections, in bins of the absolute lepton rapidity, and the associated charge asymmetry are also presented. The study is performed using data collected at √s = 8 TeV. If available, measurements of the transverse momentum distribution of Drell-Yan lepton pairs will be presented, including for low-mass Drell-Yan pairs. The measurements are compared with state-of-the-art QCD cross-section calculations.