The info is useful, but those do not seem to be all that small. There were smaller engines available for the ICE version of the Clio, for example.
1.5L is an incredibly small engine, especially when previous versions required much larger. The Renault Scénic IV is a 1.5 ton brick that is happily running on a 1.2L engine. The Scénic II's most sold motorization was a 2L engine.
edit: oh it was mine heh, my first car was a 1979 ford with a 460 ( 7.5L v8 ). It was a hand me down from my grandfather, he said if i could get it running i could have it.