The company name Audi is based on the Latin translation of the surname of the founder, August Horch. "Horch", meaning "listen" in German, becomes "audi" in. The four rings of the Audi logo each represent one of four car companies that banded together to create Audi's predecessor company, Auto Union. Audi's slogan is Vorsprung durch Technik, meaning "Being Ahead through Technology". However, Audi USA had used the slogan "Truth in Engineering" from 2007 to 2016, and have not used the slogan since 2016. ECU Decode offers various services for these quality motor vehicles.