  Recent precision measurements of diffractive neutral current deep inelastic
ep scattering are performed by the H1 and ZEUS Collaborations at the HERA
collider in a wide range of photon virtuality Q2. The first measurements of the
large rapidity gap cross sections in charged current processes at high Q2 are
also presented. The results are compared with model predictions based on parton
density functions obtained from a DGLAP QCD fit to the data.
