I am thinking of buying another car to replace the two year old Toyota Yaris which I am not happy with. Could someone here @longk or @Fat Controller (or anyone else) explain how the 'one size fits all' in modern cars works? I know engine refinement has come a long way in the last decade or so but..... I mean if a 1lt engine in say an Aygo or i10 can also be in a larger Focus or Golf, can the larger ones be as quiet, isn't there more strain on such a small engine? It seems to have replaced all sizes from 1.2lt to 1.6! I am just wondering if a 1lt focus, audi or golf can be as quiet (at 70 on motorways etc) than my previous 1.6 Corolla.