2011: For the second year in a row, the entire Andretti Autosport team struggled to get up to speed during time trials. On Bump Day, Marco was bumped from the field, and was in danger of missing the field. He managed to get out on the track before the 6 o'clock gun, and successfully bumped his way into the field - but in the process, bumped out his teammate Ryan Hunter-Reay. On race day, he started 27th, and worked his way into the top ten. Marco was called into the pits to top off with fuel during a caution on lap 154, and to make a trim adjustment of the rear wing. The stop put Marco out of sequence with the other leaders, but ended up being a poor decision. Marco lost valuable track position when another caution came out 4 laps later, and the adjustments made his car difficult to handle. He ended up 9th.