A total of 167 data sets of composition- and temperature-dependent excess molar volumes, V-E, which are derived from density measurements, for ionic liquid-molecular solvent binary systems are inspected concerning their temperature dependence at fixed compositions. It is found that the V-E temperature dependence is generally linear regardless of the sign and shape of the V-E composition dependence. Plotting the slopes and intercepts of the linear V-E temperature dependence as a function of composition allows for convenient comparisons of existing data sets. In doing so, V-E data sets are critically examined with respect to data quality as well as obtaining insight into structure-property relationships. This study also includes new density measurements for the binary systems 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide-chloroform and 1-butyl-3-methylimidazolium methylsulfonate-water, measured in the respective temperature ranges of (288.15 and 318.15) K and (298.15 and 358.15) K.