The American Customer Satisfaction Index (ACSI) is a national indicator of the quality of economic output for goods and services as experienced by consumers of that output. The Index uses technology developed at the University of Michigan by a team of researchers led by Claes Fornell, the Distinguished Donald C. Cook Professor of Business.
The Index measures the satisfaction of U.S. household consumers with the quality of products and services offered by both foreign and domestic firms with significant share in U.S. markets.
For over two decades, the ACSI has used its science-based, proprietary methodology to analyze customer satisfaction for 10 economic sectors and 40 key industries in the U.S. marketplace.
Try Nielsen for reports on consumers + various topics.
For Spain, take a look at Ministerio de Derechos Sociales, Consumo y Agenda 2030.
