Audi logo 4ring Posted on June 24, 2015 by admin Audi logo 4ring Sign - Symbol - Watermark - Trademark - Company logo. The below image is of the Audi logo 4ring showing the sign by itself or the logo including the brand name of the relevant organization. Audi logo 4ring Tags: audi, audi brand, audi logo, audi logo 4ring, audi logos, audi sign, audi symbol, audi trademark