At the end of 1980, thanks to a big turbo, the impressive R5 Turbo was launched. Mounted in a mid-engined position for the first time, this 1397cc unit was coupled to the transmission of the R30 TX and drove the rear wheels. The R5 Turbo engaged in group B rallying and gradually saw its power rise from peaking at in form in 1985; the C-engine hit in 1987 on the tour versions of the championship Blockbuster, benefiting from the 1500 turbo technology in Formula 1, which included the injection of water into the intake.