Our estimates of the SN Ia rate at z = 0.25,0.45,0.65 are compared with the other values from literature. The rate of Cappellaro et al. (1999), Hardin et al. (2000), Madgwick et al. (2003), Blanc et al. (2004) were given per unit luminosity. They are converted in rate per unit volume using the following relation of the luminosity density as a function of redshift: (Botticella et al. 2008). The measurements of Perrett et al. (2012) are scaled up by 15% to account for the fact that they not include the faint SN 1991bg-like events.