Most other changes to the Bel Air during its final years were identical to the more expensive Caprice and Impala lines, some of which were mandated by government safety regulations in the U.S. that included front bumpers in 1973 and similar-designed rear bumpers in 1974. The 1975 models had a new roofline and (along with the Impala) grille that was a direct copy of the 1974 Caprice front end. Inside, there were new instrument cluster markings, radio and climate control graphics (the speedometer read up to , and had smaller numbers for kilometers per hour). Customers could buy their 1975 Bel Air with two new options: an Econominder gauge package (which included a gauge that monitored fuel economy, due in part to growing demands for fuel economy as well as a temperature gauge) and intermittent wipers.