The R5 borrowed mechanicals from the similarly popular Renault 4, using a longitudinally-mounted engine driving the front wheels with torsion bar suspension. OHV engines were borrowed from the Renault 4 and larger Renault 8: there was a choice, at launch, between 782 cc and 956 cc according to price level. A "5TS/5LS" with the 1,289 cc engine from the Renault 12 was added from April 1974. As on the Renault 4, entry level Renault 5s had their engine sizes increased to 845 cc in 1976 and at the top of the range later models had the engine sizes expanded to 1,397 cc.