In practice for the Monaco Grand Prix Montoya was penalized to start from the back by race stewards for brake-testing his former Williams teammate, Ralf Schumacher, causing a four car collision. At the Canadian Grand Prix Montoya was in contention for the win, but he was disqualified after leaving the pitlane under a red light. As a Michelin runner, Montoya did not start the US Grand Prix ("see 2005 US Grand Prix"). The Colombian was on track for a possible podium finish at Magny-Cours when his hydraulics failed. He retired from the lead of the Hungarian GP due to a broken driveshaft. His teammate had a similar failure eight races earlier, which showed the differences in suspension geometry between both McLarens as the torsional forces are carried out in different manner.