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A better understanding of the link between consumption and life satisfaction has become a major issue for economists, who seek to find ways to improve the subjective well-being of people. But research results on the link between product and service consumption and life satisfaction are contradictory and depend on the type of product, the country, and the time. The aim of this paper is to show the benefit of taking into account several factors that influence the relationship between product satisfaction and life satisfaction: “product centrality,” which can be defined as the importance and impact of product or service consumption on everyday life; “self-product congruity”; and “lifestyle-product congruity.” The results of three studies, one qualitative and two quantitative, show the effect of these three variables. The influence of time on this relationship is also studied.