The incident in question occurred on Lap 47, with van der Garde running into the back of Nico HÃ¼lkenberg at the final chicane. After studying the relevant footage and data, the stewards have argued that the Dutchman did not yield to the required manner.
"Car 21 [van der Garde] was given blue flags for a full lap," said the stewards. "Car 11 [HÃ¼lkenberg] had to use DRS and full KERS in order to overtake a lapped car."
Van der Garde was given a stop-go penalty during the race for a separate blue flag incident, the Dutchman colliding with Red Bull's Mark Webber at the hairpin.