Zeller made his karting debut in 2006, at the age of fifteen. In first season of the Swiss Rotax Max Challenge Junior he was twelfth, improving to the third place on the next year.
Formula Lista Junior
Zeller began his car racing career by driving in the Formula Lista Junior with Jo Zeller Racing in 2008. He amassed seventeen points and scored one pol on the way to fourteenth place in the championship standings.[1]
He remained in series for 2009 and improved to fifth place. He took one win at Dijon-Prenois and scored eleven point-scoring positions.[2]