It evaluates around 30,000 products every year, from washing machines to ETF funds.What makes Stiftung Warentest so successful to this day - and why does it have its legal form?96 percent of Germans know them, four out of five consumers trust their judgment.After around 10,000 product and service tests over the past 58 years, three out of four customers now rely on Stiftung Warentest's tests before they buy a product or use a service.Around 30,000 individual products are put to the test each year.Reliable information has never been more importantHeavily reduced advertising in the Tagesspiegel appExclusive content for Tagesspiegel Plus readersNo risk: you can cancel at any timeopens in new tab or window