You are probably referring to the PRV alliance here.
An engine conglomeration not drive train. But the relationship continued hence using the smaller french engines in the 3 and 4 series. The 1.4 and 1.7 in the 3 series can both be turbo charged using renault parts.
An engine conglomeration not drive train. But the relationship continued hence using the smaller french engines in the 3 and 4 series. The 1.4 and 1.7 in the 3 series can both be turbo charged using renault parts.